This invention relates generally to heteroaryl-phenyl substituted compounds and derivatives thereof, which are inhibitors of trypsin-like serine protease enzymes, especially factor Xa, pharmaceutical compositions containing the same, and methods of using the same as anticoagulant agents for treatment and prevention of thromboembolic disorders.
Activated factor Xa, whose major practical role is the generation of thrombin by the limited proteolysis of prothrombin, holds a central position that links the intrinsic and extrinsic activation mechanisms in the final common pathway of blood coagulation. The generation of thrombin, the final serine protease in the pathway to generate a fibrin clot, from its precursor is amplified by formation of prothrombinase complex (factor Xa, factor V, Ca2+ and phospholipid). Since it is calculated that one molecule of factor Xa can generate 138 molecules of thrombin (Elodi, S., Varadi, K.: Optimization of conditions for the catalytic effect of the factor IXa-factor VIII Complex: Probable role of the complex in the amplification of blood coagulation. Thromb. Res. 1979, 15, 617-629), inhibition of factor Xa may be more efficient than inactivation of thrombin in interrupting the blood coagulation system.
Therefore, efficacious and specific inhibitors of factor Xa are needed as potentially valuable therapeutic agents for the treatment of thromboembolic disorders. It is thus desirable to discover new factor Xa inhibitors.
Accordingly, one object of the present invention is to provide novel heteroaryl-phenyl substituted compounds and derivatives thereof that are useful as factor Xa inhibitors or pharmaceutically acceptable salts or prodrugs thereof.
It is another object of the present invention to provide pharmaceutical compositions comprising a pharmaceutically acceptable carrier and a therapeutically effective amount of at least one of the compounds of the present invention or a pharmaceutically acceptable salt or prodrug form thereof.
It is another object of the present invention to provide a method for treating thromboembolic disorders comprising administering to a host in need of such treatment a therapeutically effective amount of at least one of the compounds of the present invention or a pharmaceutically acceptable salt or prodrug form thereof.
It is another object of the present invention to provide novel heteroaryl-phenyl substituted compounds for use in therapy.
It is another object of the present invention to provide the use of novel heteroaryl-phenyl substituted compounds for the manufacture of a medicament for the treatment of a thromboembolic disorder.
These and other objects, which will become apparent during the following detailed description, have been achieved by the inventors"" discovery that the presently claimed heteroaryl-phenyl substituted compounds and derivatives thereof, or pharmaceutically acceptable salt or prodrug forms thereof, are effective factor Xa inhibitors.
[1] Thus, in a first embodiment, the present invention provides a novel compound of formula Ia, Ib, or Ic:
or a stereoisomer or pharmaceutically acceptable salt thereof, wherein;
ring D1 is selected from pyridine, pyrazine, pyridazine, and pyrimidine and is substituted with 1 Ra and 0-1 Rb;
ring D2 is a 5-membered heteroaromatic ring system comprising E, carbon atoms, and 0-3 N atoms, wherein E is selected from O, S, and N-Rc and ring D2 is substituted with 1 Ra and 0-1 Rb;
ring D3 is a 5-membered heteroaromatic ring system comprising carbon atoms and from 0-3 additional N atoms and ring D3 is substituted with 1 Ra and 0-1 Rb;
R is selected from H, C1-4 alkyl, F, Cl, Br, I, OH, OCH3, OCH2CH3, OCH(CH3)2, OCH2CH2CH3, CN, C(xe2x95x90NR8)NR7R9, NHC(xe2x95x90NR8)NR7R9, NR8CH(xe2x95x90NR7), NH2, NH(C1-3 alkyl), N(C1-3 alkyl)2, C(xe2x95x90NH)NH2, CH2NH2, CH2NH(C1-3 alkyl), CH2N(C1-3 alkyl)2, CH2CH2NH2, CH2CH2NH(C1-3 alkyl), CH2CH2N(C1-3 alkyl)2, (CR8R9)tNR7R8, (CR8R9)tC(O)NR7R8, and OCF3;
Ra is selected from H, C1-4 alkyl, F, Cl, Br, I, OH, OCH3, OCH2CH3, OCH(CH3)2, OCH2CH2CH3, CN, C(xe2x95x90NR8)NR7R9, NHC(xe2x95x90NR8)NR7R9, NR8CH(xe2x95x90NR7), NH2, NH(C1-3 alkyl), N(C1-3 alkyl)2, C(xe2x95x90NH)NH2, CH2NH2, CH2NH(C1-3 alkyl), CH2N(C1-3 alkyl)2, CH2CH2NH2, CH2CH2NH(C1-3 alkyl), CH2CH2N(C1-3 alkyl)2, (CR8R9)tNR7R8, (CR8R9)tC(O)NR7R8, and OCF3;
Rb is selected from H, (C1-4 alkyl, F, Cl, Br, I, OH, OCH3, OCH2CH3, OCH(CH3)2, OCH2CH2CH3, CN, C(xe2x95x90NR8)NR7R9, NHC (xe2x95x90NR8)NR7R9, NR8CH(xe2x95x90NR7), NH2, NH(C1-3 alkyl), N(C1-3 alkyl)2, C (xe2x95x90NH)NH2, CH2NH2, CH2NH(C1-3 alkyl), CH2N(C1-3 alkyl)2, CH2CH2NH2, CH2CH2NH(C1-3 alkyl), CH2CH2N(C1-3 alkyl)2, (CR8R9)tNR7R8, (CR8R9)tC(O)NR7R8, and OCF3;
Rc is selected from H, C1-4 alkyl, OCH3, OCH2CH3, OCH(CH3)2, OCH2CH2CH3, NH2, NH(C1-3 alkyl), N(C1-3 alkyl)2, C(xe2x95x90NH)NH2, CH2NH2, CH2NH(C1-3 alkyl), CH2N(C1-3 alkyl)2, CH2CH2NH2, CH2CH2NH(C1-3 alkyl), CH2CH2N(C1-3 alkyl)2, (CR8R9)tNR7R8, (CR8R9)tC(O)NR7R8, and OCF3;
G is absent or is selected from CH2, C(O), O, NR3, S(O)p, CH2CH2, C(O)CH2, CH2C(O), OCH2, CH2O, NR3CH2, CH2NR3, S(O)pCH2, CH2S(O)p, CH2CH2CH2, C(O)CH2CH2, CH2C(O)CH2, CH2CH2C(O), OCH2CH2, CH2OCH2, CH2CH2O, NR3CH2CH2, CH2NR3CH2, CH2CH2NR3, S(O)pCH2CH2, CH2S(O)pCH2, and CH2CH2S(O)p;
G1 is absent or is selected from (CR3R3a)1-5, (CR3R3a)0-2CR3xe2x95x90CR3(CR3R3a)0-2(CR3R3a)0-2Cxe2x89xa1C (CR3R3a)0-2, (CR3R3a)uC(O) (CR3R3a)w, (CR3R3a)uC(O)O(CR3R3a)w, (CR3R3a)uOC(O) (CR3R3a)w, (CR3R3a)uO(CR3R3a)w, (CR3R3a)uNR3(CR3R3a)w, (CR3R3a)uC(O)NR3(CR3R3a)w, (CR3R3a)uNR3C(O) (CR3R3a)w, (CR3R3a)uOC(O)NR3(CR3R3a)w, (CR3R3a)uNR3C(O)O(CR3R3a)w, (CR3R3a)uNR3C(O)NR3(CR3R3a)w, (CR3R3a)uNR3C(S)NR3(CR3R3a)w, (CR3R3a)uS (CR3R3a)w, (CR3R3a)uS(O) (CR3R3a)w, (CR3R3a)uS(O)2(CR3R3a)w, (CR3R3a)uS(O)NR3(CR3R3a)w, (CR3R3a)uNR3S(O)2(CR3R3a)w, (CR3R3a)uS(O)2NR3(CR3R3a)w, and (CR3R3a)NR3S(O)2NR3(CR3R3a)w, wherein u+w total 0, 1, 2, 3, or 4, provided that G1 does not form a Nxe2x80x94N, Nxe2x80x94O, Nxe2x80x94S, NCH2N, NCH2O, or NCH2S bond with either group to which it is attached;
G2 is phenyl, naphthyl, or a 5-10 membered heteroaryl consisting of carbon atoms and from 1-3 heteroatoms selected from N, O, and S;
M is isoxazoline, pyrazoline, isothiazoline, triazoline, tetrazoline, phenyl, or a 5-6 membered aromatic heterocycle consisting of carbon atoms and 1-4 heteroatoms selected from O, N, and S, and is substituted with -Z-A-B;
M is also substituted with 0-2 R1a;
Z is selected from a bond, xe2x80x94(CR2R2a)1-4xe2x80x94, (CR2R2a)qO(CR2R2a)q1, (CR2R2a)qNR3(CR2R2a)q1, (CR2R2a)qC(O) (CR2R2a)q1, (CR2R2a)qC(O)O(CR2R2a)q1, (CR2R2a)qOC(O) (CR2R2a)q1(CR2R2a)qC(O)NR3(CR2R2a)q1, (CR2R2a)qNR3C(O) (CR2R2a)q1, (CR2R2a)qOC(O)O(CR2R2a)q1, (CR2R2a)qOC(O)NR3 (CR2R2a)q1, (CR2R2a)qNR3C(O)O(CR2R2a)q1, (CR2R2a)q1NR3C(O) NR3(CR2a)q1, (CR2R2a)qS(CR2R2a)q1, (CR2R2a)qS(O) (CR2R2a)q1, (CR2R2a)qS(O)2(CR2R2a)q1, (CR2R2a)qSO2NR3(CR2R2a)q1, (CR2R2a)qNR3SO2(CR2R2a)q1, and (CR2R2a)qNR3SO2NR3(CR2R2a)q1, wherein q+q1 total 0, 1, or 2, provided that Z does not form a Nxe2x80x94N, Nxe2x80x94O, Nxe2x80x94S, NCH2N, NCH2O, or NCH2S bond with either group to which it is attached;
R1a is selected from H, xe2x80x94(CH2)rxe2x80x94R1b, xe2x80x94CH=CHxe2x80x94R1b, NCH2R1c, OCH2R1c, SCH2R1c, NH(CH2)2(CH2)tR1b, O(CH2)2(CH2)tR1b, S(CH2)2(CH2)tR1b, S(O)p(CH2)rR1d, O(CH2)rR1d, NR3 (CH2)rR1d, OC(O)NR3(CH2)rR1d, NR3C(O)NR3(CH2)rR1d, NR3C(O)O(CH2)rR1d, and NR3C(O) (CH2)rR1d, provided that R1a forms other than an Nxe2x80x94halo, Nxe2x80x94N, Nxe2x80x94S, Nxe2x80x94O, or Nxe2x80x94CN bond;
alternatively, when two R1a""s are attached to adjacent atoms, together with the atoms to which they are attached they form a 5-7 membered ring consisting of: carbon atoms and 0-2 heteroatoms selected from the group consisting of N, O, and S(O)p, this ring being substituted with 0-2 R4b and comprising: 0-3 double bonds;
R1b is selected from H, C1-3 alkyl, F, Cl, Br, I, xe2x80x94CN, xe2x80x94CHO, (CF2)rCF3, (CH2)rOR2, NR2R2a, C(O)R2c, OC(O)R2, (CF2)rCO2R2a, S(O)pR2b, NR2(CH2)rOR2, C(xe2x95x90NR2c)NR2R2a, NR2C(O)R2b, NR2C(O)NHR2b, NR2C(O)2R2a, OC(O)NR2aR2b, C(O)NR2R2a, C(O)NR2(CH2)rOR2, SO2NR2R2a, NR2SO2R2b, C3-6 carbocycle substituted with 0-2 R4a, and 5-10 membered heterocycle consisting of carbon atoms and from 1-4 heteroatoms selected from the group consisting of N, O, and S(O)p substituted with 0-2 R4a, provided that R1b forms other than an Nxe2x80x94halo, Nxe2x80x94N, Nxe2x80x94S, Nxe2x80x94O, or Nxe2x80x94CN bond;
R1c is selected from H, CH(CH2OR2)2, C(O)R2c, C(O)NR2R2a, S(O)R2b, S(O)2R2b, and SO2NR2R2a;
R1d is selected from C3-13 carbocycle substituted with 0-2 R4a, and 5-13 membered heterocycle consisting of carbon atoms and from 1-4 heteroatoms selected from the group consisting of N, O, and S(O)p substituted with 0-2 R4a, provided that R1d forms other than an Nxe2x80x94N, Nxe2x80x94S, or Nxe2x80x94O bond;
R2, at each occurrence, is selected from H, CF3, C1-6 alkyl, benzyl, C3-6 carbocyclic residue substituted with 0-2 R4b, and 5-6 membered heterocyclic system comprising carbon atoms and from 1-4 heteroatoms selected from the group consisting of N, O, and S substituted with 0-2 R4b;
R2a, at each occurrence, is selected from H, CF3, C1-6 alkyl, benzyl, phenethyl, C3-6 carbocyclic residue substituted with 0-2 R4b, and 5-6 membered heterocyclic system comprising carbon atoms and from 1-4 heteroatoms selected from the group consisting of N, O, and S substituted with 0-2 R4b;
R2b, at each occurrence, is selected from CF3, C1-4 alkoxy, C1-6 alkyl, benzyl, C3-6 carbocyclic residue substituted with 0-2 R4b, and 5-6 membered heterocyclic system comprising carbon atoms and from 1-4 heteroatoms selected from the group consisting of N, O, and S substituted with 0-2 R4b;
R2c, at each occurrence, is selected from CF3, OH, C1-4 alkoxy, C1-6 alkyl, benzyl, C3-6 carbocyclic residue substituted with 0-2 R4b, and 5-6 membered heterocyclic system comprising carbon atoms and from 1-4 heteroatoms selected from the group consisting of N, O, and S substituted with 0-2 R4b;
alternatively, R2 and R2a, together with the atom to which they are attached, combine to form a 5 or 6 membered saturated, partially saturated or unsaturated ring substituted with 0-2 R4b and comprising carbon atoms and from 0-1 additional heteroatoms selected from the group consisting of N, O, and S;
R3, at each occurrence, is selected from H, C1-4 alkyl, and phenyl;
R3a, at each occurrence, is selected from H, C1-4 alkyl, and phenyl;
R3b, at each occurrence, is selected from H, C1-4 alkyl, and phenyl;
R3c, at each occurrence, is selected from C1-4 alkyl, and phenyl;
R3d, at each occurrence, is selected from H, (C1-4 alkyl, C1-4 alkyl-phenyl, and C(xe2x95x90O)R3c;
A is selected from:
C3-10 carbocyclic residue substituted with 0-2 R4, and
5-12 membered heterocyclic system comprising carbon atoms and from 1-4 heteroatoms selected from the group consisting of N, O, and S substituted with 0-2 R4;
B is selected from: H, Y, and X-Y, provided that Z and B are attached to different atoms on A;
X is selected from xe2x80x94(CR2R2a)14xe2x80x94, xe2x80x94R2(CR2R2b) (CH2)txe2x80x94, xe2x80x94C(O)xe2x80x94, xe2x80x94C(xe2x95x90NR1c)xe2x80x94, xe2x80x94CR2(NR1cR2)xe2x80x94, xe2x80x94CR2(OR2)xe2x80x94, xe2x80x94CR2(SR2)xe2x80x94, xe2x80x94C(O)CR2R2axe2x80x94, xe2x80x94CR2R2aC(O), xe2x80x94Sxe2x80x94, xe2x80x94S(O)xe2x80x94, xe2x80x94S(O)2xe2x80x94, xe2x80x94SCR2R2axe2x80x94, xe2x80x94S(O)CR2R2axe2x80x94, xe2x80x94S(O)2CR2R2axe2x80x94, xe2x80x94CR2R2aSxe2x80x94, xe2x80x94CR2R2aS(O)xe2x80x94, xe2x80x94CR2R2aS(O)2xe2x80x94, xe2x80x94S(O)2NR2xe2x80x94, xe2x80x94NR2S(O)2xe2x80x94, xe2x80x94NR2S(O)2CR2R2axe2x80x94, xe2x80x94CR2R2aS(O)2NR2xe2x80x94, xe2x80x94NR2S(O) 2NR2xe2x80x94, xe2x80x94C(O)NR2xe2x80x94, xe2x80x94NR2C(O)xe2x80x94, xe2x80x94C(O)NR2CR2R2axe2x80x94, xe2x80x94NR2C(O)CR2R2axe2x80x94, xe2x80x94CR2R2aC(O)NR2xe2x80x94, xe2x80x94CR2R2aNR2C(O)xe2x80x94, xe2x80x94NR2C(O)Oxe2x80x94, xe2x80x94OC(O)NR2xe2x80x94, xe2x80x94NR2C(O)NR2xe2x80x94, xe2x80x94NR2xe2x80x94, xe2x80x94NR2CR2R2axe2x80x94, xe2x80x94CR2R2aNR2xe2x80x94, O, xe2x80x94CR2R2aOxe2x80x94, and xe2x80x94OCR2R2axe2x80x94;
Y is selected from:
C3-10 carbocyclic residue substituted with 0-2 R4a, and
5-12 membered heterocyclic system comprising carbon atoms and from 1-4 heteroatoms selected from the group consisting of N, O, and S substituted with 0-2 R4a;
R4, at each occurrence, is selected from H, xe2x95x90O, (CH2)rOR2, (CH2)rF, (CH2)rCl, (CH2)rBr, (CH2)rI, C1-4 alkyl, (CH2)rCN, (CH2)rNO2, (CH2)rNR2R2a, C(O)R2c, NR2C(O)R2b, C(O)NR2R2a, NR2C(O)NR2R2a, C(xe2x95x90NR2)NR2R2a, C(xe2x95x90NS(O)2R5)NR2R2a, NHC(xe2x95x90NR2)NR2R2a, C(O)NHC(xe2x95x90NR2)NR2R2a, SO2NR2R2a, NR2SO2NR2R2a, NR2SO2xe2x80x94C1-4 alkyl, NR2SO2R5, S(O)pR5, (CF2)rCF3, (CH2)rxe2x80x94CF3, NCH2R1c, OCH2R1c, SCH2R1c, N(CH2)2(CH2)tR1b, O(CH2)2(CH2)tR1b, S(CH2)2(CH2)tR1b, 5-6 membered carbocycle substituted with 0-1 R5, and 5-6 membered heterocycle consisting of: carbon atoms and 1-4 heteroatoms selected from the group consisting of N, O, and S(O)p substituted with 0-1 R5;
R4a, at each occurrence, is selected from H, xe2x95x90O, (CH2)rOR2, (CF2)rCF3, (CH2)rxe2x80x94CF3, (CH2)rxe2x80x94F, (CH2)rxe2x80x94Br, (CH2)rxe2x80x94Cl, (C1-4 alkyl, (CH2)rCN, (CH2)rNO2, (CH2)rNR2R2a, (CH2)rC(O)R2c, NR2C(O)R2b, C(O)NR2R2a, (CH2)rNxe2x80x94CHOR3, C(O)NH(CH2)2NR2R2a, NR2C(O)NR2R2a, C(xe2x95x90NR2)NR2R2a, NHC(xe2x95x90NR2)NR2R2a, SO2NR2R2a, NR2SO2NR2R2a, NR2SO2xe2x80x94C1-4 alkyl, NR2SO2R5, C(O)NHSO2xe2x80x94C1-4 alkyl, S(O)pR5, 5-6 membered carbocycle substituted with 0-1 R5, and 5-6 membered heterocycle consisting of: carbon atoms and 1-4 heteroatoms selected from the group consisting of N, O, and S(O)p substituted with 0-1 R5;
R4b, at each occurrence, is selected from H, xe2x95x90O, (CH2)rOR3, (CH2)rxe2x80x94F, (CH2)rxe2x80x94Cl, (CH2)rxe2x80x94Br, (CH2)rxe2x80x94I, (C1-4 alkyl, (CH2)rxe2x80x94CN, (CH2)rxe2x80x94NO2, (CH2)rNR3R3a, (CH2)rC(O)R3, (CH2)rC(O)OR3c, NR3C(O)R3a, C(O)NR3R3a, NR3C(O)NR3R3a, C(xe2x95x90NR3)NR3R3a, NR3C(xe2x95x90NR3)NR3R3a, SO2NR3R3a, NR3SO2NR3R3a, NR3SO2xe2x80x94C1-4 alkyl, NR3SO2CF3, NR3SO2-phenyl, S(O)pCF3, S(O)pxe2x80x94C1-4 alkyl, S(O)p-phenyl, (CH2)rCF3, and (CF2)rCF3;
R5, at each occurrence, is selected from H, C1-6 alkyl, xe2x95x90O, (CH2)rOR3, F, Cl, Br, I, xe2x80x94CN, NO2, (CH2)rNR3R3a, (CH2)rC(O)R3, (CH2)rC(O)OR3c, NR3C(O)R3a, C(O)NR3R3a, NR3C(O)NR3R3a, CH(xe2x95x90NOR3d), C(xe2x95x90NR3)NR3R3a, NR3C(xe2x95x90NR3)NR3R3a, SO2NR3R3a, NR3SO2NR3R3a, NR3SO2xe2x80x94C1-4 alkyl, NR3SO2CF3, NR3SO2-phenyl, S(O)pCF3, S(O)pxe2x80x94C1-4 alkyl, S(O)p-phenyl, (CF2)rCF3, phenyl substituted with 0-2 R6, naphthyl substituted with 0-2 R6, and benzyl substituted with 0-2 R6;
R6, at each occurrence, is selected from H, OH, (CH2)rOR2, halo, C1-4 alkyl, CN, NO2, (CH2)rNR2R2a, (CH2)rC(O)R2b, NR2C(O)R2b, NR2C(O)NR2R2a, C(xe2x95x90NH)NH2, NHC(xe2x95x90NH)NH2, SO2NR2R2a, NR2SO2NR2R2a, and NR2SO2C1-4 alkyl;
R7, at each occurrence, is selected from H, OH, C1-4 alkoxycarbonyl, C6-10 aryloxy, C6-10 aryloxycarbonyl, C6-10 arylmethylcarbonyl, C1-4 alkylcarbonyloxy C1-4 alkoxycarbonyl, C6-10 arylcarbonyloxy C1-4 alkoxycarbonyl, C1-6 alkylaminocarbonyl, phenylaminocarbonyl, and phenyl (C1-4 alkoxycarbonyl;
R8, at each occurrence, is selected from H, C1-6 alkyl, and (CH2)n-phenyl;
alternatively, R7 and R8, when attached to the same nitrogen, combine to form a 5-6 membered heterocyclic ring consisting of carbon atoms and 0-2 additional heteroatoms selected from the group consisting of N, O, and S(O)p;
R9, at each occurrence, is selected from H, C1-6 alkyl, and (CH2)n-phenyl;
n, at each occurrence, is selected from 0, 1, 2, and 3;
m, at each occurrence, is selected from 0, 1, and 2;
p, at each occurrence, is selected from 0, 1, and 2;
r, at each occurrence, is selected from 0, 1, 2, and 3;
s, at each occurrence, is selected from 0, 1, and 2; and,
t, at each occurrence, is selected from 0, 1, 2, and 3.
[2] In a preferred embodiment, the present invention provides a novel compound, wherein the compound is of formula Ia1-Ic1, wherein:
ring D2 is a 5-membered heteroaromatic ring system comprising E, carbon atoms, and 0-2 N atoms, wherein E is selected from O, S, and Nxe2x80x94Rc and ring D2 is substituted with 1 Ra and 0-1 Rb;
ring D3 is a 5-membered heteroaromatic ring system comprising carbon atoms and from 0-3 additional N atoms and ring D3 is substituted with 1 Ra and 0-1 Rb;
R is selected from H, Cl, F, Br, I, OH, C1-3 alkoxy, NH2, NH(C1-3 alkyl), N(C1-3 alkyl)2, CH2NH2, CH2NH(C1-3 alkyl), CH2N(C1-3 alkyl)2, CH2CH2NH2, CH2CH2NH(C1-3 alkyl), and CH2CH2N(C1-3 alkyl)2;
Ra is selected from H, OH, SH, C1-3 alkoxy, C1-3 thioalkoxy, NH2, NH(C1-3 alkyl), N(C1-3 alkyl)2, CH2NH2, CH2NH(C1-3 alkyl), CH2N(C1-3 alkyl)2, CH2CH2NH2, CH2CH2NH(C1-3 alkyl), and CH2CH2N (C1-3 alkyl)2,
Rb is selected from H, C1-4 alkyl, Cl, F, Br, I, OH, C1-3 alkoxy, NH2, NH(C1-3 alkyl), N(C1-3 alkyl)2, CH2NH2, CH2NH(C1-3 alkyl), CH2N(C1-3 alkyl)2, CH2CH2NH2, CH2CH2NH(C1-3 alkyl), and CH2CH2N(C1-3 alkyl)2;
Rc is selected from H, C1-4 alkyl, C1-3 alkoxy, NH2, NH(C1-3 alkyl), N(C1-3 alkyl)2, CH2NH2, CH2NH(C1-3 alkyl), CH2N(C1-3 alkyl)2, CH2CH2NH2, CH2CH2NH(C1-3 alkyl), and CH2CH2N(C1-3 alkyl)2;
G1 is absent or is selected from CH2, C(O), O, NR3, S(O)p, CH2CH2, C(O)CH2, CH2C(O), OCH2, CH2O, NR3CH2, CH2NR3, S(O)pCH2, CH2S(O)p, CH2CH2CH2, C(O)CH2CH2, CH2C(O)CH2, CH2CH2C(O), OCH2CH2, CH2OCH2, CH2CH2O, NR3CH2CH2, CH2NR3CH2, CH2CH2NR3, S(O)pCH2CH2, CH2S(O)pCH2, and CH2CH2S(O)p, and provided that G1xe2x80x94M form other than a Nxe2x80x94N, Oxe2x80x94N, or Sxe2x80x94N bond;
M is selected from the group:
J is O or S;
Ja is NH or NR1a;
G1 is absent or is selected from (CR3R3a)1-3, (CR3R3a)uC(O) (CR3R3a)w, (CR3R3a)uO(CR3R3a)w, (CR3R3a)uNR3(CR3R3a)w, (CR3R3a)uC(O)NR3(CR3R3a)w, (CR3R3a)uNR3C(O) (CR3R3a)w, (CR3R3a)uS(CR3R3a)w, (CR3R3a)uS(O) (CR3R3a)w, (CR3R3a) S(O)2(CR3R3a)w, (CR3R3a)uS(O)NR3CR3R3a)w, and (CR3R3a)uS(O)2NR3(CR3R3a)w, wherein u+w total 0, 1, or 2, provided that G1 does not form a Nxe2x80x94N, Nxe2x80x94O, Nxe2x80x94S, NCH2N, NCH2O, or NCH2S bond with either group to which it is attached;
A is selected from one of the following carbocyclic and heterocyclic systems which are substituted with 0-2 R4;
phenyl, piperidinyl, piperazinyl, pyridyl, pyrimidyl, furanyl, morpholinyl, thiophenyl, pyrrolyl, pyrrolidinyl, oxazolyl, isoxazolyl, thiazolyl, isothiazolyl, pyrazolyl, imidazolyl, oxadiazolyl, thiadiazolyl, triazolyl, 1,2,3-oxadiazolyl, 1,2,4-oxadiazolyl, 1,2,5-oxadiazolyl, 1,3,4-oxadiazolyl, 1,2,3-thiadiazolyl, 1,2,4-thiadiazolyl, 1,2,5-thiadiazolyl, 1,3,4-thiadiazolyl, 1,2,3-triazolyl, 1,2,4-triazolyl, 1,2,5-triazolyl, 1,3,4-triazolyl, benzofuranyl, benzothiofuranyl, indolyl, benzimidazolyl, benzoxazolyl, benzthiazolyl, indazolyl, benzisoxazolyl, benzisothiazolyl, and isoindazolyl;
X is selected from xe2x80x94C(CR2R2a)14xe2x80x94, xe2x80x94C(O)xe2x80x94, xe2x80x94C(xe2x95x90NR1c)xe2x80x94, xe2x80x94CR2(NR1cR2)xe2x80x94C(O)CR2R2axe2x80x94, xe2x80x94CR2R2aC(O)xe2x80x94C(O)NR2xe2x80x94, xe2x80x94NR2C(O)xe2x80x94, C(O)NR2CR2R2axe2x80x94, xe2x80x94NR2C(O)CR2R2axe2x80x94, xe2x80x94CR2R2aC(O)NR2xe2x80x94, xe2x80x94CR2R2aNR2C(O)xe2x80x94, xe2x80x94NR2C(O)NR2xe2x80x94, xe2x80x94NR2xe2x80x94, xe2x80x94NR2CR2R2axe2x80x94, xe2x80x94CR2R2aNR2xe2x80x94, O, xe2x80x94CR2R2aOxe2x80x94, and xe2x80x94OCR2R2axe2x80x94;
Y is selected from one of the following carbocyclic and heterocyclic systems that are substituted with 0-2 R4a;
cyclopropyl, cyclopentyl, cyclohexyl, phenyl, piperidinyl, piperazinyl, pyridyl, pyrimidyl, furanyl, morpholinyl, thiophenyl, pyrrolyl, pyrrolidinyl, oxazolyl, isoxazolyl, isoxazolinyl, thiazolyl, isothiazolyl, pyrazolyl, imidazolyl, oxadiazolyl, thiadiazolyl, triazolyl, 1,2,3-oxadiazolyl, 1,2,4-oxadiazolyl, 1,2,5-oxadiazolyl, 1,3,4-oxadiazolyl, 1,2,3-thiadiazolyl, 1,2,4-thiadiazolyl, 1,2,5-thiadiazolyl, 1,3,4-thiadiazolyl, 1,2,3-triazolyl, 1,2,4-triazolyl, 1,2,5-triazolyl, 1,3,4-triazolyl, benzofuranyl, benzothiofuranyl, indolyl, benzimidazolyl, benzoxazolyl, benzthiazolyl, indazolyl, benzisoxazolyl, benzisothiazolyl, and isoindazolyl;
alternatively, Y is selected from the following bicyclic heteroaryl ring systems:
K is selected from O, S, NH, and N;
Z is selected from a bond, CH2O, OCH2, NH, CH2NH, NHCH2, CH2C(O)C(O)CH2, C(O) NH, NHC(O), CH2S(O)2, S(O)2(CH2), SO2NH, and NHSO2, provided that Z does not form a Nxe2x80x94N, Nxe2x80x94O, Nxe2x80x94S, NCH2N, NCH2O, or NCH2S bond with either group to which it is attached;
R4, at each occurrence, is selected from H, xe2x95x90O, (CH2)rOR2, F, Cl, Br, I, C1-4 alkyl, CN, NO2, (CH2)rNR2R2a, C(O)R2c, NR2C(O)R2b, C(O)NR2R2a, NR2C(O)NR2R2a, C(xe2x95x90NR2)NR2R2a, SO2NR2R2a, NR2SO2NR2R2a, NR2SO2xe2x80x94C1-4 alkyl, NR2SO2R5, S(O)pR5, CF3, NCH2R1c, OCH2R1c, SCH2R1c, N(CH2)2(CH2)tR1b, O(CH2)2(CH2)tR1b, S(CH2)2(CH2)tR1b, 5-6 membered carbocycle substituted with 0-1 R5, and 5-6 membered heterocycle consisting of: carbon atoms and 1-4 heteroatoms selected from the group consisting of N, O, and S(O)p substituted with 0-1 R5; and,
R4a, at each occurrence, is selected from H, xe2x95x90O, (CH2)rOR2, CF3, F, Br, Cl, C1-4 alkyl, CN, NO2, (CH2)rNR2R2a, (CH2)rC(O)R2c, NR2C(O)R2b, C(O)NR2R2a, NR2C(O)NR2R2a, C(xe2x95x90NR2)NR2R2a, NHC(xe2x95x90NR2)NR2R2a, SO2NR2R2a, NR2SO2NR2R2a, NR2SO2xe2x80x94C1-4 alkyl, NR2SO2R5, C(O)NHSO2xe2x80x94C1-4 alkyl, S(O)pR5, 5-6 membered carbocycle substituted with 0-1 R5, and 5-6 membered heterocycle consisting of: carbon atoms and 1-4 heteroatoms selected from the group consisting of N, O, and S(O)p substituted with 0-1 R5.
[3] In another preferred embodiment, the present invention provides a novel compound, wherein the compound is of formula Ib1 or Ic1, wherein;
ring D2 is a 5-membered heteroaromatic ring system comprising E, carbon atoms, and 0-2 N atoms, wherein E is selected from O, S, and Nxe2x80x94Rc and ring D2 is substituted with 1 Ra and 0-1 Rb;
R is selected from H, Cl, F, Br, I, OH, C1-3 alkoxy, NH2, NH(C1-3 alkyl), N(C1-3 alkyl)2, CH2NH2, CH2NH(C1-3 alkyl), and CH2N(C1-3 alkyl)2;
Ra is selected from H. OH, SH, NH2, NH(C1-3 alkyl), N(C1-3 alkyl)2, CH2NH2, CH2NH(C1-3 alkyl), and CH2N(C1-3 alkyl)2;
Rb is selected from H, C1-4 alkyl, Cl, F, Br, I, OH, C1-3 alkoxy, NH2, NH(C1-3 alkyl), N(C1-3 alkyl)2, CH2NH2, CH2NH(C1-3 alkyl), and CH2N(C1-3 alkyl)2;
Rc is selected from H, C1-4 alkyl, C1-3 alkoxy, NH2, NH(C1-3 alkyl), N(C1-3 alkyl)2, CH2NH2, CH2NH(C1-3 alkyl), and CH2N (C1-3 alkyl)2;
M is selected from the group:
Y is selected from one of the following carbocyclic and heterocyclic systems which are substituted with 0-2 R4a;
phenyl, piperidinyl, piperazinyl, pyridyl, pyrimidyl, furanyl, morpholinyl, thiophenyl, pyrrolyl, pyrrolidinyl, oxazolyl, isoxazolyl, thiazolyl, isothiazolyl, pyrazolyl, imidazolyl, oxadiazole, thiadiazole, triazole, 1,2,3-oxadiazole, 1,2,4-oxadiazole, 1,2,5-oxadiazole, 1,3,4-oxadiazole, 1,2,3-thiadiazole, 1,2,4-thiadiazole, 1,2,5-thiadiazole, 1,3,4-thiadiazole, 1,2,3-triazole, 1,2,4-triazole, 1,2,5-triazole, 1,3,4-triazole, benzofuran, benzothiofuran, indole, benzimidazole, benzimidazolone, benzoxazole, benzthiazole, indazole, benzisoxazole, benzisothiazole, and isoindazole;
Z is selected from a bond, CH2O, OCH2, NH, CH2NH, NHCH2, CH2C(O), C(O)CH2, C(O)NH, NHC(O), CH2S(O)2, S(O)2(CH2), SO2NH, and NHSO2, provided that Z does not form a Nxe2x80x94N, Nxe2x80x94O, Nxe2x80x94S, NCH2N, NCH2O, or NCH2S bond with either group to which it is attached;
R4, at each occurrence, is selected from H, xe2x95x90O, (CH2)rOR2, F, Cl, Br, I, C1-4 alkyl, CN, NO2, (CH2)rNR2R2a, C(O)R2c, NR2C(O)R2b, C(O)NR2R2a, NR2C(O)NR2R2a, C(xe2x95x90NR2)NR2R2a, SO2NR2R2a, NR2SO2NR2R2a, NR2SO2xe2x80x94C1-4 alkyl, NR2SO2R5, S(O)pR5, CF3, 5-6 membered carbocycle substituted with 0-1 R5, and 5-6 membered heterocycle consisting of: carbon atoms and 1-4 heteroatoms selected from the group consisting of N, O, and S(O)p substituted with 0-1 R5; and,
R4a, at each occurrence, is selected from H, xe2x95x90O, (CH2)rOR2, CF3, F, Br, Cl, C1-4 alkyl, CN, NO2, (CH2)rNR2R2a, (CH2)rC(O)R2c, NR2C(O)R2b, C(O)NR2R2a, NR2C(O)NR2R2a, C(xe2x95x90NR2)NR2R2a, SO2NR2R2a, C(O)NHSO2xe2x80x94C1-4 alkyl, S(O)pR5, 5-6 membered carbocycle substituted with 0-1 R5, and 5-6 membered heterocycle consisting of: carbon atoms and 1-4 heteroatoms selected from the group consisting of N, O, and S(O)p substituted with 0-1 R5.
[4] In another preferred embodiment, the present invention provides a novel compound, wherein the compound is of formula Ib2:
or a stereoisomer or pharmaceutically acceptable salt thereof, wherein;
ring D2 is a 5-membered heteroaromatic ring system comprising E, carbon atoms, and 0-2 N atoms, wherein E is selected from O, S, and Nxe2x80x94Rc and ring D2 is substituted with 1 Ra and 0-1 Rb;
R is selected from H, Cl, F, Br, I, OH, C1-3 alkoxy, NH2, NH(C1-3 alkyl), N(C1-3 alkyl)2, CH2NH2, CH2NH(C1-3 alkyl), and CH2N(C1-3 alkyl)2;
Ra is selected from H, OH, SH, NH2, NH(C1-3 alkyl), and N(C1-3 alkyl)2;
Rb is selected from H, C1-4 alkyl, Cl, F, Br, I, OH, C1-3 alkoxy, NH2, NH(C1-3 alkyl), N(C1-3 alkyl)2, CH2NH2, CH2NH(C1-3 alkyl), and CH2N(C1-3 alkyl)2;
M is selected from the group:
G1 is absent or is selected from CH2, CH2CH2, CH2O, OCH2, NH, CH2NH, NHCH2 CH2C(O), C(O)CH2, C(O)NH, NHC(O), CH2S(O)2, S(O)2(CH2), SO2NH, and NHSO2, provided that G1 does not form a Nxe2x80x94N, Nxe2x80x94O, Nxe2x80x94S, NCH2N, NCH2O, or NCH2S bond with either group to which it is attached.
[5] In another preferred embodiment, the present invention provides a novel compound, wherein the compound is selected from one of the formulas:
or a stereoisomer or pharmaceutically acceptable salt thereof, wherein;
G1 is absent;
A is selected from phenyl, piperidinyl, pyridyl, and
pyrimidyl, and is substituted with 0-2 R4; and,
B is selected from phenyl, pyrrolidino, N-pyrrolidino-carbonyl, morpholino, N-morpholino-carbonyl, 1,2,3-triazolyl, imidazolyl, and benzimidazolyl, and is substituted with 0-1 R4a;
R2, at each occurrence, is selected from H, CH3, CH2CH3, cyclopropylmethyl, cyclobutyl, and cyclopentyl;
R2a, at each occurrence, is selected from H, CH3, and CH2CH3;
alternatively, R2 and R2a, together with the atom to which they are attached, combine to form pyrrolidine substituted with 0-2 R4b or piperidine substituted with 0-2 R4b;
R4, at each occurrence, is selected from OH, OR2, (CH2)OR2, (CH2)2OR2, F, Br, Cl, I, C1-4 alkyl, NR2R2a, (CH2)NR2R2a, (CH2)2NR2R2a, CF3, and (CF2)CF3;
R4a is selected from C1-4 alkyl, CF3, OR2, (CH2)OR2, (CH2)2OR2, NR2R2a, (CH2)NR2R2a, (CH2)2NR2R2a, SR5, S(O)R5, S(O)2R5, SO2NR2R2a, and 1xe2x80x94CF3-tetrazol-2-yl;
R4b, at each occurrence, is selected from H, CH3, and OH;
R5, at each occurrence, is selected from CF3, C1-6 alkyl, phenyl, and benzyl; and,
r, at each occurrence, is selected from 0, 1, and 2.
[6] In another preferred embodiment, the present invention provides a novel compound, wherein;
A is selected from the group: phenyl, piperidinyl, 2-pyridyl, 3-pyridyl, 2-pyrimidyl, 2xe2x80x94Cl-phenyl, 3-Cl-phenyl, 2-F-phenyl, 3-F-phenyl, 2-methylphenyl, 2-aminophenyl, and 2-methoxyphenyl; and,
B is selected from the group: 2-(aminosulfonyl)phenyl, 2-(methylaminosulfonyl)phenyl, 1-pyrrolidinocarbonyl, 2-(methylsulfonyl)phenyl, 2-(N,N-dimethylaminomethyl)phenyl, 2-(N-methylaminomethyl)phenyl, 2-(N-ethyl-N-methylaminomethyl)phenyl, 2-(N-pyrrolidinylmethyl)phenyl, 1-methyl-2-imidazolyl, 2-methyl-1-imidazolyl, 2-(dimethylaminomethyl)-1-imidazolyl, 2-(methylaminomethyl)-1-imidazolyl, 2-(N-(cyclopropylmethyl)aminomethyl)phenyl, 2-(N-(cyclobutyl)aminomethyl)phenyl, 2-(N-(cyclopentyl)aminomethyl)phenyl, 2-(N-(4-hydroxypiperidinyl)methyl)phenyl, and 2-(N-(3-hydroxypyrrolidinyl)methyl)phenyl.
[7] In another preferred embodiment, the present invention provides a novel compound selected from the group:
1-[3-(1xe2x80x2,3xe2x80x2,4xe2x80x2-Triazol-2xe2x80x2-on-5xe2x80x2-yl)phenyl]-3-trifluoromethyl-5-[(2xe2x80x2-N,N-dimethylaminomethyl-[1,1xe2x80x2]-biphen-4-yl)aminocarbonyl]pyrazole;
1-[3-(1xe2x80x2,3xe2x80x2,4xe2x80x2-Triazol-2xe2x80x2-on-5xe2x80x2-yl)phenyl]-3-trifluoromethyl-5-[(2xe2x80x2-N-pyrrolidinylmethyl-[1,1xe2x80x2]-biphen-4-yl)aminocarbonyl]pyrazole;
1-[3-(1xe2x80x2,3xe2x80x2,4xe2x80x2-Triazol-2xe2x80x2-on-5xe2x80x2-yl)phenyl]-3-trifluoromethyl-5-[(3-fluoro-2xe2x80x2-N,N-dimethylaminomethyl-[1,1xe2x80x2]-biphen-4-yl)aminocarbonyl]pyrazole;
1-[3-(1xe2x80x2,3xe2x80x2,4xe2x80x2-Triazol-2xe2x80x2-on-5xe2x80x2-yl)phenyl]-3-trifluoromethyl-5-[(3-fluoro-2xe2x80x2-N-pyrrolidinylmethyl-[1,1xe2x80x2]-biphen-4-yl)aminocarbonyl]pyrazole;
1-[3-(1xe2x80x2,3xe2x80x2,4xe2x80x2-Triazol-2xe2x80x2-on-5xe2x80x2-yl)phenyl]-3-trifluoromethyl-5-[(2xe2x80x2-sulfonylmethyl-[1,1xe2x80x2]-biphen-4-yl)aminocarbonyl]pyrazole;
1-[3-(1xe2x80x2,3xe2x80x2,4xe2x80x2-Triazol-2xe2x80x2-on-5xe2x80x2-yl)phenyl]-3-trifluoromethyl-5-[(3-fluoro-2xe2x80x2-sulfonylmethyl-[1,1xe2x80x2]-biphen-4-yl)aminocarbonyl]pyrazole;
1-[3-(2xe2x80x2-Amino-1xe2x80x2,3xe2x80x2,4xe2x80x2-triazol-5xe2x80x2-yl)phenyl]-3-trifluoromethyl-5-[(3-fluoro-2xe2x80x2-sulfonylmethyl-[1,1xe2x80x2]-biphen-4-yl)aminocarbonyl]pyrazole;
1-[3-(2xe2x80x2-Amino-1xe2x80x2,3xe2x80x2,4xe2x80x2-triazol-5xe2x80x2-yl)phenyl]-3-trifluoromethyl-5-[(3-fluoro-2xe2x80x2-N,N-dimethylaminomethyl-[1,1xe2x80x2]-biphen-4-yl)aminocarbonyl]pyrazole;
1-[3-(2xe2x80x2-Amino-1xe2x80x2,3xe2x80x2,4xe2x80x2-triazol-5xe2x80x2-yl)phenyl]-3-trifluoromethyl-5-[(3-fluoro-2xe2x80x2-N-pyrrolidinylmethyl-[1,1xe2x80x2],-biphen-4-yl)aminocarbonyl]pyrazole;
1-[3-(2xe2x80x2-Amino-3xe2x80x2,4xe2x80x2-thiadiazol-5xe2x80x2-yl)phenyl]-3-trifluoromethyl-5-[(3-fluoro-2xe2x80x2-sulfonylmethyl-[1,1xe2x80x2]-biphen-4-yl)aminocarbonyl]pyrazole;
1-[3-(2xe2x80x2-Amino-3xe2x80x2,4xe2x80x2-thiadiazol-5xe2x80x2-yl)phenyl]-3-trifluoromethyl-5-[(3-fluoro-2xe2x80x2-N,N-dimethylaminomethyl-[1,1xe2x80x2]-biphen-4-yl)aminocarbonyl]pyrazole;
1-[3-(2xe2x80x2-Amino-3xe2x80x2,4xe2x80x2-thiadiazol-5xe2x80x2-yl)phenyl]-3-trifluoromethyl-5-[(3-fluoro-2xe2x80x2-N-pyrrolidinylmethyl-[1,1xe2x80x2]-biphen-4-yl)aminocarbonyl]pyrazole;
1-[3-(1xe2x80x2,3xe2x80x2,4xe2x80x2-Triazol-2xe2x80x2-on-5xe2x80x2-yl)phenyl]-3-trifluoromethyl-5-[4-(2xe2x80x2-(N,N-dimethylamino)methylimidazol-1xe2x80x2-yl)-2-fluorophenyl)aminocarbonyl]pyrazole;
1-[3-(1xe2x80x2,3xe2x80x2,4xe2x80x2-Triazol-2xe2x80x2-on-5xe2x80x2-yl)phenyl]-3-trifluoromethyl-5-[4-(2xe2x80x2-methylimidazol-1xe2x80x2-yl)-2-fluorophenyl)aminocarbonyl]pyrazole;
1-[3-(Pyrid-3xe2x80x2-yl)phenyl]-3-trifluoromethyl-5-[(3-fluoro-2xe2x80x2-sulfonylmethyl-[1,1xe2x80x2]-biphen-4-yl)aminocarbonyl]pyrazole;
1-[3-(Pyrid-3xe2x80x2-yl)phenyl]-3-trifluoromethyl-5-[(3-fluoro-2xe2x80x2-N,N-dimethylaminomethyl-[1,1xe2x80x2]-biphen-4-yl)aminocarbonyl]pyrazole;
1-[3-(Pyrid-3xe2x80x2-yl)phenyl]-3-trifluoromethyl-5-[(3-fluoro-2xe2x80x2-N-pyrrolidinylmethyl-[1,1xe2x80x2]-biphen-4-yl)aminocarbonyl]pyrazole;
1-[3-(Pyrid-4xe2x80x2-yl)phenyl]-3-trifluoromethyl-5-[(3-fluoro-2xe2x80x2-N,N-dimethylaminomethyl-[1,1xe2x80x2]-biphen-4-yl)aminocarbonyl]pyrazole;
1-[3-(Pyrid-4xe2x80x2-yl)phenyl]-3-trifluoromethyl-5-[(3-fluoro-2xe2x80x2-N-pyrrolidinylmethyl-[1,1xe2x80x2]-biphen-4-yl)aminocarbonyl]pyrazole;
1-[3-(Pyrid-4xe2x80x2-yl)phenyl]-3-trifluoromethyl-5-[(3-fluoro-2xe2x80x2-sulfonylmethyl-[1,1xe2x80x2]-biphen-4-yl)aminocarbonyl]pyrazole;
1-[3-(5-Amino-1,3,4-oxadiazol-2-yl)phenyl]-N-{2xe2x80x2-[(dimethylamino)methyl]-3-fluoro-1,1xe2x80x2-biphenyl-4-yl}-3-(trifluoromethyl)-1H-pyrazole-5-carboxamide;
1-[3-(5-Amino-1,3,4-oxadiazol-2-yl)phenyl]-N-(3-fluoro-2xe2x80x2-{[(3S)-3-hydroxy-1-pyrrolidinyl]methyl}-1,1xe2x80x2-biphenyl-4-yl)-3-(trifluoromethyl)-1H-pyrazole-5-carboxamide; and,
1-[3-(5-Amino-1,3,4-oxadiazol-2-yl)phenyl]-N-(3-fluoro-2xe2x80x2-{[(3S)-3-hydroxy-1-pyrrolidinyl]methyl}-1,1xe2x80x2-biphenyl-4-yl)-5-(trifluoromethyl)-1H-pyrazole-3-carboxamide;
or a pharmaceutically acceptable salt thereof.
In another embodiment, the present invention provides a novel compound, wherein the compound is of formula Ia1-Ic1, wherein:
ring D2 is a 5-membered heteroaromatic ring system comprising E, carbon atoms, and 0-2 N atoms, wherein E is selected from O, S, and Nxe2x80x94Rc and ring D2 is substituted with 1 Ra and 0-1 Rb;
ring D3 is a 5-membered heteroaromatic ring system comprising carbon atoms and from 0-3 additional N atoms and ring D3 is substituted with 1 Ra and 0-1 Rb;
R is selected from H, Cl, F, Br, I, OH, C1-3 alkoxy, NH2, NH(C1-3 alkyl), N(C1-3 alkyl)2, CH2NH2, CH2NH(C1-3 alkyl), CH2N(C1-3 alkyl)2, CH2CH2NH2, CH2CH2NH(C1-3 alkyl), and CH2CH2N(C1-3 alkyl)2;
Ra is selected from H, OH, SH, C1-3 alkoxy, C1-3 thioalkoxy, NH2, NH(C1-3 alkyl), N(C1-3 alkyl)2, CH2NH2, CH2NH(C1-3 alkyl), CH2N(C1-3 alkyl)2, CH2CH2NH2, CH2CH2NH(C1-3 alkyl), and CH2CH2N(C1-3 alkyl)2;
Rb is selected from H, C1-4 alkyl, Cl, F, Br, I, OH, C1-3 alkoxy, NH2, NH(C1-3 alkyl), N(C1-3 alkyl)2, CH2NH2, CH2NH(C1-3 alkyl), CH2N(C1-3 alkyl)2, CH2CH2NH2, CH2CH2NH(C1-3 alkyl), and CH2CH2N(C1-3 alkyl)2;
Rc is selected from H, C1-4 alkyl, C1-3 alkoxy, NH2, NH(C1-3 alkyl), N(C1-3 alkyl)2, CH2NH2, CH2NH(C1-3 alkyl), CH2N(C1-3 alkyl)2, CH2CH2NH2, CH2CH2NH(C1-3 alkyl), and CH2CH2N (C1-3 alkyl)2, and,
G1 is absent or is selected from CH2, C(O), O, NR3, S(O)p, CH2CH2, C(O)CH2, CH2C(O), OCH2, CH2O, NR3CH2, CH2NR3, S(O)pCH2, CH2S(O)p, CH2CH2CH2, C(O)CH2CH2, CH2C(O)CH2, CH2CH2C(O), OCH2CH2, CH2OCH2, CH2CH2O, NR3CH2CH2, CH2NR3CH2, CH2CH2NR3, S(O)pCH2CH2, CH2S(O)CH2, and CH2CH2S(O)p, and provided that G1xe2x80x94M form other than a Nxe2x80x94N, Oxe2x80x94N, or Sxe2x80x94N bond.
In another embodiment, the present invention provides a novel compound, wherein the compound is of formula Ib1 or Ic1, wherein;
ring D2 is a 5-membered heteroaromatic ring system comprising E, carbon atoms, and 0-2 N atoms, wherein E is selected from O, S, and Nxe2x80x94Rc and ring D2 is substituted with 1 Ra and 0-1 Rb;
R is selected from H, Cl, F, Br, I, OH, C1-3 alkoxy, NH2, NH(C1-3 alkyl), N(C1-3 alkyl)2, CH2NH2, CH2NH(C1-3 alkyl), and CH2N(C1-3 alkyl)2;
Ra is selected from H, OH, SH, NH2, NH(C1-3 alkyl), N(C1-3 alkyl)2, CH2NH2, CH2NH(C1-3 alkyl), and CH2N(C1-3 alkyl)2,
Rb is selected from H, C1-4 alkyl, Cl, F, Br, I, OH, C1-3 alkoxy, NH2, NH(C1-3 alkyl), N(C1-3 alkyl)2, CH2NH2, CH2NH(C1-3 alkyl), and CH2N(C1-3 alkyl)2; and,
Rc is selected from H, C1-4 alkyl, C1-3 alkoxy, NH2, NH(C1-3 alkyl), N(C1-3 alkyl)2, CH2NH2, CH2NH(C1-3 alkyl), and CH2N(C1-3 alkyl)2.
In another embodiment, the present invention provides a novel compound, wherein the compound is of formula Ib2:
or a stereoisomer or pharmaceutically acceptable salt thereof, wherein;
ring D2 is a 5-membered heteroaromatic ring system comprising E, carbon atoms, and 0-2 N atoms, wherein E is selected from O, S, and Nxe2x80x94Rc and ring D2 is substituted with 1 Ra and 0-1 Rb;
R is selected from H, Cl, F, Br, I, OH, C1-3 alkoxy, NH2, NH(C1-3 alkyl), N(C1-3 alkyl)2, CH2NH2, CH2NH(C1-3 alkyl), and CH2N(C1-3 alkyl)2;
Ra is selected from H. OH, SH, NH2, NH(C1-3 alkyl), and N(C1-3 alkyl)2; and,
Rb is selected from H, C1-4 alkyl, Cl, F, Br, I, OH, C1-3 alkoxy, NH2, NH(C1-3 alkyl), N(C1-3 alkyl)2, CH2NH2, CH2NH(C1-3 alkyl), and CH2N(C1-3 alkyl)2.
In another embodiment, the present invention provides a novel compound selected from one of the formulas:
or a stereoisomer or pharmaceutically acceptable salt thereof.
In another embodiment, the present invention provides a novel compound selected from one of the formulas:
or a stereoisomer or pharmaceutically acceptable salt thereof.
In another embodiment, the present invention provides a novel compound selected from one of the formulas:
or a stereoisomer or pharmaceutically acceptable salt thereof.
In another embodiment, the present invention provides a novel compound wherein M is selected from the group:
J is O or S; and,
Ja is NH or NR1a.
In another embodiment, the present invention provides a novel compound wherein M is selected from the group:
In another embodiment, the present invention provides a novel compound wherein M is selected from the group:
In another embodiment, the present invention provides a novel compound wherein A is selected from one of the following carbocyclic and heterocyclic systems that are substituted with 0-2 R4;
phenyl, piperidinyl, piperazinyl, pyridyl, pyrimidyl, furanyl, morpholinyl, thiophenyl, pyrrolyl, pyrrolidinyl, oxazolyl, isoxazolyl, thiazolyl, isothiazolyl, pyrazolyl, imidazolyl, oxadiazolyl, thiadiazolyl, triazolyl, 1,2,3-oxadiazolyl, 1,2,4-oxadiazolyl, 1,2,5-oxadiazolyl, 1,3,4-oxadiazolyl, 1,2,3-thiadiazolyl, 1,2,4-thiadiazolyl, 1,2,5-thiadiazolyl, 1,3,4-thiadiazolyl, 1,2,3-triazolyl, 1,2,4-triazolyl, 1,2,5-triazolyl, 1,3,4-triazolyl, benzofuranyl, benzothiofuranyl, indolyl, benzimidazolyl, benzoxazolyl, benzthiazolyl, indazolyl, benzisoxazolyl, benzisothiazolyl, and isoindazolyl;
In another embodiment, the present invention provides a novel compound wherein A is selected from phenyl, piperidinyl, pyridyl, and pyrimidyl, and is substituted with 0-2 R4.
In another embodiment, the present invention provides a novel compound wherein A is selected from the group: phenyl, piperidinyl, 2-pyridyl, 3-pyridyl, 2-pyrimidyl, 2-Cl-phenyl, 3-Cl-phenyl, 2-F-phenyl, 3-F-phenyl, 2-methylphenyl, 2-aminophenyl, and 2-methoxyphenyl.
In another embodiment, the present invention provides a novel compound wherein:
B is selected from: H, Y, and X-Y, provided that Z and B are attached to different atoms on A;
X is selected from xe2x80x94(CR2R2a)1-4, xe2x80x94C(O)xe2x80x94C(xe2x95x90NR1c)xe2x80x94, xe2x80x94CR2(NR1cR2), xe2x80x94C(O)CR2R2axe2x80x94, xe2x80x94CR2R2aC(O), xe2x80x94C(O)NR2xe2x80x94, xe2x80x94NR2C(O)xe2x80x94, xe2x80x94C(O)NR2CR2R2axe2x80x94, xe2x80x94NR2C(O)CR2R2axe2x80x94, xe2x80x94CR2R2aC(O)NR2xe2x80x94, xe2x80x94CR2R2aNR2C(O)xe2x80x94, xe2x80x94NR2C(O)NR2xe2x80x94, xe2x80x94NR2xe2x80x94, xe2x80x94NR2CR2R2axe2x80x94, xe2x80x94CR2R2aNR2xe2x80x94, O, xe2x80x94CR2R2aOxe2x80x94, and xe2x80x94OCR2R2axe2x80x94;
Y is selected from one of the following carbocyclic and heterocyclic systems that are substituted with 0-2 R4a;
cyclopropyl, cyclopentyl, cyclohexyl, phenyl, piperidinyl, piperazinyl, pyridyl, pyrimidyl, furanyl, morpholinyl, thiophenyl, pyrrolyl, pyrrolidinyl, oxazolyl, isoxazolyl, isoxazolinyl, thiazolyl, isothiazolyl, pyrazolyl, imidazolyl, oxadiazolyl, thiadiazolyl, triazolyl, 1,2,3-oxadiazolyl, 1,2,4-oxadiazolyl, 1,2,5-oxadiazolyl, 1,3,4-oxadiazolyl, 1,2,3-thiadiazolyl, 1,2,4-thiadiazolyl, 1,2,5-thiadiazolyl, 1,3,4-thiadiazolyl, 1,2,3-triazolyl, 1,2,4-triazolyl, 1,2,5-triazolyl, 1,3,4-triazolyl, benzofuranyl, benzothiofuranyl, indolyl, benzimidazolyl, benzoxazolyl, benzthiazolyl, indazolyl, benzisoxazolyl, benzisothiazolyl, and isoindazolyl;
alternatively, Y is selected from the following bicyclic heteroaryl ring systems:
K is selected from O, S, NH, and N.
In another embodiment, the present invention provides a novel compound wherein:
Y is selected from one of the following carbocyclic and heterocyclic systems which are substituted with 0-2 R4a;
phenyl, piperidinyl, piperazinyl, pyridyl, pyrimidyl, furanyl, morpholinyl, thiophenyl, pyrrolyl, pyrrolidinyl, oxazolyl, isoxazolyl, thiazolyl, isothiazolyl, pyrazolyl, imidazolyl, oxadiazole, thiadiazole, triazole, 1,2,3-oxadiazole, 1,2,4-oxadiazole, 1,2,5-oxadiazole, 1,3,4-oxadiazole, 1,2,3-thiadiazole, 1,2,4-thiadiazole, 1,2,5-thiadiazole, 1,3,4-thiadiazole, 1,2,3-triazole, 1,2,4-triazole, 1,2,5-triazole, 1,3,4-triazole, benzofuran, benzothiofuran, indole, benzimidazole, benzimidazolone, benzoxazole, benzthiazole, indazole, benzisoxazole, benzisothiazole, and isoindazole.
In another embodiment, the present invention provides a novel compound wherein B is selected from phenyl, pyrrolidino, N-pyrrolidino-carbonyl, morpholino, N-morpholino-carbonyl, 1,2,3-triazolyl, imidazolyl, and benzimidazolyl, and is substituted with 0-1 R4a.
In another embodiment, the present invention provides a novel compound wherein B is selected from the group: 2-(aminosulfonyl)phenyl, 2-(methylaminosulfonyl)phenyl, 1-pyrrolidinocarbonyl, 2-(methylsulfonyl)phenyl, 2-(N,N-dimethylaminomethyl)phenyl, 2-(N-methylaminomethyl)phenyl, 2-(N-ethyl-N-methylaminomethyl)phenyl, 2-(N-pyrrolidinylmethyl)phenyl, 1-methyl-2-imidazolyl, 2-methyl-1-imidazolyl, 2-(dimethylaminomethyl)-1-imidazolyl, 2-(methylaminomethyl)-1-imidazolyl, 2-(N-(cyclopropylmethyl)aminomethyl)phenyl, 2-(N-(cyclobutyl)aminomethyl)phenyl, 2-(N-(cyclopentyl)aminomethyl)phenyl, 2-(N-(4-hydroxypiperidinyl)methyl)phenyl, and 2-(N-(3-hydroxypyrrolidinyl)methyl)phenyl.
In another embodiment, the present invention provides novel pharmaceutical compositions, comprising: a pharmaceutically acceptable carrier and a therapeutically effective amount of a compound of the present invention or a pharmaceutically acceptable salt form thereof.
In another embodiment, the present invention provides a novel method for treating or preventing a thromboembolic disorder, comprising: administering to a patient in need thereof a therapeutically effective amount of a compound of the present invention or a pharmaceutically acceptable salt form thereof.
In another embodiment, the present invention provides a compound of the present invention as described above for use in therapy.
In another embodiment, the present invention provides the use of the present invention as described above for the manufacture of a medicament for the treatment of a thromboembolic disorder.
The compounds herein described may have asymmetric centers. Compounds of the present invention containing an asymmetrically substituted atom may be isolated in optically active or racemic forms. It is well known in the art how to prepare optically active forms, such as by resolution of racemic forms or by synthesis from optically active starting materials. Many geometric isomers of olefins, Cxe2x95x90N double bonds, and the like can also be present in the compounds described herein, and all such stable isomers are contemplated in the present invention. Cis and trans geometric isomers of the compounds of the present invention are described and may be isolated as a mixture of isomers or as separated isomeric forms. All chiral, diastereomeric, racemic forms and all geometric isomeric forms of a structure are intended, unless the specific stereochemistry or isomeric form is specifically indicated. All processes used to prepare compounds of the present invention and intermediates made therein are considered to be part of the present invention. All tautomers of shown or described compounds are also considered to be part of the present invention.
The term xe2x80x9csubstituted,xe2x80x9d as used herein, means that any one or more hydrogens on the designated atom is replaced with a selection from the indicated group, provided that the designated atom""s normal valency is not exceeded, and that the substitution results in a stable compound. When a substituent is keto (i.e., xe2x95x90O), then 2 hydrogens on the atom are replaced. Keto substituents are not present on aromatic moieties.
The present invention is intended to include all isotopes of atoms occurring in the present compounds. Isotopes include those atoms having the same atomic number but different mass numbers. By way of general example and without limitation, isotopes of hydrogen include tritium and deuterium. Isotopes of carbon include C-13 and C-14.
When any variable (e.g., R6) occurs more than one time in any constituent or formula for a compound, its definition at each occurrence is independent of its definition at every other occurrence. Thus, for example, if a group is shown to be substituted with 0-2 R6, then said group may optionally be substituted with up to two R6 groups and R6 at each occurrence is selected independently from the definition of R6. Also, combinations of substituents and/or variables are permissible only if such combinations result in stable compounds.
When a bond to a substituent is shown to cross a bond connecting two atoms in a ring, then such substituent may be bonded to any atom on the ring. When a substituent is listed without indicating the atom via which such substituent is bonded to the rest of the compound of a given formula, then such substituent may be bonded via any atom in such substituent. Combinations of substituents and/or variables are permissible only if such combinations result in stable compounds.
As used herein, xe2x80x9calkylxe2x80x9d is intended to include both branched and straight-chain saturated aliphatic hydrocarbon groups having the specified number of carbon atoms. C1-10 alkyl, is intended to include C1, C2, C3, C4, C5, C6, C7, C8, C9, and C10 alkyl groups. Examples of alkyl include, but are not limited to, methyl, ethyl, n-propyl, i-propyl, n-butyl, s-butyl, t-butyl, n-pentyl, and s-pentyl. xe2x80x9cHaloalkylxe2x80x9d is intended to include both branched and straight-chain saturated aliphatic hydrocarbon groups having the specified number of carbon atoms, substituted with 1 or more halogen (for example xe2x80x94CvFw where v=1 to 3 and w=1 to (2v+1)). Examples of haloalkyl include, but are not limited to, trifluoromethyl, trichloromethyl, pentafluoroethyl, and pentachloroethyl. xe2x80x9cAlkoxyxe2x80x9d represents an alkyl group as defined above with the indicated number of carbon atoms attached through an oxygen bridge. C1-10 alkoxy, is intended to include C1, C2, C3, C4, C5, C6, C7, C8, C9, and C10 alkoxy groups. Examples of alkoxy include, but are not limited to, methoxy, ethoxy, n-propoxy, i-propoxy, n-butoxy, s-butoxy, t-butoxy, n-pentoxy, and s-pentoxy. xe2x80x9cCycloalkylxe2x80x9d is intended to include saturated ring groups, such as cyclopropyl, cyclobutyl, or cyclopentyl. C3-7 cycloalkyl is intended to include C3, C4, C5, C6, and C7 cycloalkyl groups. Alkenylxe2x80x9d is intended to include hydrocarbon chains of either straight or branched configuration and one or more unsaturated carbonxe2x80x94carbon bonds that may occur in any stable point along the chain, such as ethenyl and propenyl. C2-10 alkenyl is intended to include C2, C3, C4, C5, C6, C7, C8, C9, and C10 alkenyl groups. xe2x80x9cAlkynylxe2x80x9d is intended to include hydrocarbon chains of either straight or branched configuration and one or more triple carbonxe2x80x94carbon bonds that may occur in any stable point along the chain, such as ethynyl and propynyl. C2-10 Alkynyl is intended to include C2, C3, C4, C5, C6, C7, C8, C9, and C10 alkynyl groups.
xe2x80x9cHaloxe2x80x9d or xe2x80x9chalogenxe2x80x9d as used herein refers to fluoro, chloro, bromo, and iodo; and xe2x80x9ccounterionxe2x80x9d is used to represent a small, negatively charged species such as chloride, bromide, hydroxide, acetate, and sulfate.
As used herein, xe2x80x9ccarbocyclexe2x80x9d or xe2x80x9ccarbocyclic residuexe2x80x9d is intended to mean any stable 3, 4, 5, 6, or 7-membered monocyclic or bicyclic or 7, 8, 9, 10, 11, 12, or 13-membered bicyclic or tricyclic, any of which may be saturated, partially unsaturated, or aromatic. Examples of such carbocycles include, but are not limited to, cyclopropyl, cyclobutyl, cyclopentyl, cyclohexyl, cycloheptyl, adamantyl, cyclooctyl, [3.3.0]bicyclooctane, [4.3.0]bicyclononane, [4.4.0]bicyclodecane, [2.2.2]bicyclooctane, fluorenyl, phenyl, naphthyl, indanyl, adamantyl, and tetrahydronaphthyl.
As used herein, the term xe2x80x9cheterocyclexe2x80x9d or xe2x80x9cheterocyclic systemxe2x80x9d is intended to mean a stable 5, 6, or 7-membered monocyclic or bicyclic or 7, 8, 9, or 10-membered bicyclic heterocyclic ring which is saturated, partially unsaturated or unsaturated (aromatic), and which consists of carbon atoms and 1, 2, 3, or 4 heteroatoms independently selected from the group consisting of N, NH, O and S and including any bicyclic group in which any of the above-defined heterocyclic rings is fused to a benzene ring. The nitrogen and sulfur heteroatoms may optionally be oxidized. The heterocyclic ring may be attached to its pendant group at any heteroatom or carbon atom that results in a stable structure. The heterocyclic rings described herein may be substituted on carbon or on a nitrogen atom if the resulting compound is stable. A nitrogen in the heterocycle may optionally be quaternized. It is preferred that when the total number of S and O atoms in the heterocycle exceeds 1, then these heteroatoms are not adjacent to one another. It is preferred that the total number of S and O atoms in the heterocycle is not more than 1. As used herein, the term xe2x80x9caromatic heterocyclic systemxe2x80x9d or xe2x80x9cheteroarylxe2x80x9d is intended to mean a stable 5, 6, or 7-membered monocyclic or bicyclic or 7, 8, 9, or 10-membered bicyclic heterocyclic aromatic ring which consists of carbon atoms and 1, 2, 3, or 4 heteroatoms independently selected from the group consisting of N, NH, O and S. It is to be noted that total number of S and O atoms in the aromatic heterocycle is not more than 1.
Examples of heterocycles include, but are not limited to, acridinyl, azocinyl, benzimidazolyl, benzofuranyl, benzothiofuranyl, benzothiophenyl, benzoxazolyl, benzoxazolinyl, benzthiazolyl, benztriazolyl, benztetrazolyl, benzisoxazolyl, benzisothiazolyl, benzimidazolinyl, carbazolyl, 4aH-carbazolyl, carbolinyl, chromanyl, chromenyl, cinnolinyl, decahydroquinolinyl, 2H, 6H-1, 5, 2-dithiazinyl, dihydrofuro[2,3-b]tetrahydrofuran, furanyl, furazanyl, imidazolidinyl, imidazolinyl, imidazolyl, 1H-indazolyl, indolenyl, indolinyl, indolizinyl, indolyl, 3H-indolyl, isatinoyl, isobenzofuranyl, isochromanyl, isoindazolyl, isoindolinyl, isoindolyl, isoquinolinyl, isothiazolyl, isoxazolyl, methylenedioxyphenyl, morpholinyl, naphthyridinyl, octahydroisoquinolinyl, oxadiazolyl, 1,2,3-oxadiazolyl, 1,2,4-oxadiazolyl, 1,2,5-oxadiazolyl, 1,3,4-oxadiazolyl, oxazolidinyl, oxazolyl, oxindolyl, pyrimidinyl, phenanthridinyl, phenanthrolinyl, phenazinyl, phenothiazinyl, phenoxathinyl, phenoxazinyl, phthalazinyl, piperazinyl, piperidinyl, piperidonyl, 4-piperidonyl, piperonyl, pteridinyl, purinyl, pyranyl, pyrazinyl, pyrazolidinyl, pyrazolinyl, pyrazolyl, pyridazinyl, pyridooxazole, pyridoimidazole, pyridothiazole, pyridinyl, pyridyl, pyrimidinyl, pyrrolidinyl, pyrrolinyl, 2H-pyrrolyl, pyrrolyl, quinazolinyl, quinolinyl, 4H-quinolizinyl, quinoxalinyl, quinuclidinyl, tetrahydrofuranyl, tetrahydroisoquinolinyl, tetrahydroquinolinyl, tetrazolyl, 6H-1,2,5-thiadiazinyl, 1,2,3-thiadiazolyl, 1,2,4-thiadiazolyl, 1,2,5-thiadiazolyl, 1,3,4-thiadiazolyl, thianthrenyl, thiazolyl, thienyl, thienothiazolyl, thienooxazolyl, thienoimidazolyl, thiophenyl, triazinyl, 1,2,3-triazolyl, 1,2,4-triazolyl, 1,2,5-triazolyl, 1,3,4-triazolyl, and xanthenyl. Also included are fused ring and spiro compounds containing, for example, the above heterocycles.
The phrase xe2x80x9cpharmaceutically acceptablexe2x80x9d is employed herein to refer to those compounds, materials, compositions, and/or dosage forms which are, within the scope of sound medical judgment, suitable for use in contact with the tissues of human beings and animals without excessive toxicity, irritation, allergic response, or other problem or complication, commensurate with a reasonable benefit/risk ratio.
As used herein, xe2x80x9cpharmaceutically acceptable saltsxe2x80x9d refer to derivatives of the disclosed compounds wherein the parent compound is modified by making acid or base salts thereof. Examples of pharmaceutically acceptable salts include, but are not limited to, mineral or organic acid salts of basic residues such as amines; alkali or organic salts of acidic residues such as carboxylic acids; and the like. The pharmaceutically acceptable salts include the conventional non-toxic salts or the quaternary ammonium salts of the parent compound formed, for example, from non-toxic inorganic or organic acids. For example, such conventional non-toxic salts include those derived from inorganic acids such as hydrochloric, hydrobromic, sulfuric, sulfamic, phosphoric, nitric and the like; and the salts prepared from organic acids such as acetic, propionic, succinic, glycolic, stearic, lactic, malic, tartaric, citric, ascorbic, pamoic, maleic, hydroxymaleic, phenylacetic, glutamic, benzoic, salicylic, sulfanilic, 2-acetoxybenzoic, fumaric, toluenesulfonic, methanesulfonic, ethane disulfonic, oxalic, isethionic, and the like.
The pharmaceutically acceptable salts of the present invention can be synthesized from the parent compound that contains a basic or acidic moiety by conventional chemical methods. Generally, such salts can be prepared by reacting the free acid or base forms of these compounds with a stoichiometric amount of the appropriate base or acid in water or in an organic solvent, or in a mixture of the two; generally, non-aqueous media like ether, ethyl acetate, ethanol, isopropanol, or acetonitrile are preferred. Lists of suitable salts are found in Remington""s Pharmaceutical Sciences, 17th ed., Mack Publishing Company, Easton, Pa., 1985, p. 1418, the disclosure of which is hereby incorporated by reference.
Since prodrugs are known to enhance numerous desirable qualities of pharmaceuticals (e.g., solubility, bioavailability, manufacturing, etc. . . . ) the compounds of the present invention may be delivered in prodrug form. Thus, the present invention is intended to cover prodrugs of the presently claimed compounds, methods of delivering the same and compositions containing the same. xe2x80x9cProdrugsxe2x80x9d are intended to include any covalently bonded carriers that release an active parent drug of the present invention in vivo when such prodrug is administered to a mammalian subject. Prodrugs the present invention are prepared by modifying functional groups present in the compound in such a way that the modifications are cleaved, either in routine manipulation or in vivo, to the parent compound. Prodrugs include compounds of the present invention wherein a hydroxy, amino, or sulfhydryl group is bonded to any group that, when the prodrug of the present invention is administered to a mammalian subject, it cleaves to form a free hydroxyl, free amino, or free sulfhydryl group, respectively. Examples of prodrugs include, but are not limited to, acetate, formate and benzoate derivatives of alcohol and amine functional groups in the compounds of the present invention.
xe2x80x9cStable compoundxe2x80x9d and xe2x80x9cstable structurexe2x80x9d are meant to indicate a compound that is sufficiently robust to survive isolation to a useful degree of purity from a reaction mixture, and formulation into an efficacious therapeutic agent.
xe2x80x9cSubstitutedxe2x80x9d is intended to indicate that one or more hydrogens on the atom indicated in the expression using xe2x80x9csubstitutedxe2x80x9d is replaced with a selection from the indicated group(s), provided that the indicated atom""s normal valency is not exceeded, and that the substitution results in a stable compound. When a substituent is keto (i.e., xe2x95x90O) group, then 2 hydrogens on the atom are replaced.
xe2x80x9cTherapeutically effective amountxe2x80x9d is intended to include an amount of a compound of the present invention or an amount of the combination of compounds claimed effective to inhibit factor Xa. The combination of compounds is preferably a synergistic combination. Synergy, as described, for example, by Chou and Talalay, Adv. Enzyme Regul. 1984, 22:27-55, occurs when the effect (in this case, inhibition of factor Xa) of the compounds when administered in combination is greater than the additive effect of the compounds when administered alone as a single agent. In general, a synergistic effect is most clearly demonstrated at sub-optimal concentrations of the compounds. Synergy can be in terms of lower cytotoxicity, increased antiviral effect, or some other beneficial effect of the combination compared with the individual components.
The compounds of the present invention can be prepared in a number of ways known to one skilled in the art of organic synthesis. The compounds of the present invention can be synthesized using the methods described below, together with synthetic methods known in the art of synthetic organic chemistry, or by variations thereon as appreciated by those skilled in the art. Preferred methods include, but are not limited to, those described below. The reactions are performed in a solvent appropriate to the reagents and materials employed and suitable for the transformations being effected. It will be understood by those skilled in the art of organic synthesis that the functionality present on the molecule should be consistent with the transformations proposed. This will sometimes require a judgment to modify the order of the synthetic steps or to select one particular process scheme over another in order to obtain a desired compound of the invention. It will also be recognized that another major consideration in the planning of any synthetic route in this field is the judicious choice of the protecting group used for protection of the reactive functional groups present in the compounds described in this invention. An authoritative account describing the many alternatives to the trained practitioner is Greene and Wuts (Protective Groups In Organic Synthesis, Wiley and Sons, 1991). All references cited herein are hereby incorporated in their entirety herein by reference.
The heterocyclic system shown in Scheme 1(wherein Gxe2x80x94D can be xe2x80x94CN or halo) can be prepared according to the schemes shown in PCT applications WO98/28269, WO98/28282, WO/9857934 and WO99/32454. In Scheme 1 and the schemes that follow, xe2x80x94Gxe2x80x94D represents rings D1, D2, or D3 attached to linker G or precursors to this moiety.
Compounds of this invention wherein Gxe2x80x94D is a cyano group can be manipulated to afford thiadiazoles, oxadiazoles, aminooxadiazoles, pyrazoles, triazoles, and triazolones as outlined in Scheme 2.
Other heterocycles contained in this invention can also be obtained via methods shown in Scheme 3
Various analogs of the compounds contained in Scheme 4 can be made following the methodologies outlined in Schemes 1-3 and WO01/05784.
Compounds of this invention wherein ring D is a pyridyl, pyrimidyl, pyridazine, or other heterocyclic ring systems can also be prepared via the Suzuki and or the Stille coupling techniques from easily accessible bromo-phenyl precursors shown in Scheme 5.
Additionally, other compounds of this invention can also be prepared by those knowledgeable in the art following the methodology outlined in Scheme 6.
The compounds prepared via Scheme 6 can be used to prepare similar analogs with other five membered heterocyclic core systems or other linker G1. These can then be further elaborated via the methodologies shown in earlier schemes to obtain compounds of this invention.
For other carbon based heterocyclic or aryl core systems the above methodologies apply but can be further modified via the method outlined in Scheme 7
The synthesis shown in Scheme 7 can be adopted for other carbon based heterocycles or aryl rings. In addition to the above other compounds of this invention can also be prepared via the method outlined in Scheme 8.
Alternatively, compounds of these inventions can also be prepared via the methodology outlined in Scheme 9.
The synthetic methodology applied in Scheme 9 can also be applied to all other heterocyclic or aryl systems. In all the cases and schemes provided the intermediates wherein X (or D-G-) is a halogen or cyano group these in turn can be manipulated to the heterocyclic systems contained in this invention.
The compounds of the present invention have a group xe2x80x9cA-Bxe2x80x9d attached to ring M directly or via Z. Preparations of some of the rings M and the xe2x80x9cA-Bxe2x80x9d moieties can follow the same methods described in WO97/23212, WO97/30971, WO97/38984, WO98/01428, WO98/06694, WO98/28269, WO98/28282, WO98/57934, WO98/57937, and WO98/57951, the contents of which are incorporated herein by reference
The compounds of this invention are useful as anticoagulants for the treatment or prevention of thromboembolic disorders in mammals. The term xe2x80x9cthromboembolic disordersxe2x80x9d as used herein includes arterial or venous cardiovascular or cerebrovascular thromboembolic disorders, including, for example, unstable angina, first or recurrent myocardial infarction, ischemic sudden death, transient ischemic attack, stroke, atherosclerosis, venous thrombosis, deep vein thrombosis, thrombophlebitis, arterial embolism, coronary and cerebral arterial thrombosis, cerebral embolism, kidney embolisms, and pulmonary embolisms. The anticoagulant effect of compounds of the present invention is believed to be due to inhibition of factor Xa or thrombin.
The effectiveness of compounds of the present invention as inhibitors of factor Xa was determined using purified human factor Xa and synthetic substrate. The rate of factor Xa hydrolysis of chromogenic substrate S2222 (Kabi Pharmacia, Franklin, Ohio) was measured both in the absence and presence of compounds of the present invention. Hydrolysis of the substrate resulted in the release of pNA, which was monitored spectrophotometrically by measuring the increase in absorbance at 405 nM. A decrease in the rate of absorbance change at 405 nm in the presence of inhibitor is indicative of enzyme inhibition. The results of this assay are expressed as inhibitory constant, Ki.
Factor Xa determinations were made in 0.10 M sodium phosphate buffer, pH 7.5, containing 0.20 M NaCl, and 0.5% PEG 8000. The Michaelis constant, Km, for substrate hydrolysis was determined at 25xc2x0 C. using the method of Lineweaver and Burk. Values of Ki were determined by allowing 0.2-0.5 nM human factor Xa (Enzyme Research Laboratories, South Bend, Ind.) to react with the substrate (0.20 mM-1 mM) in the presence of inhibitor. Reactions were allowed to go for 30 minutes and the velocities (rate of absorbance change vs time) were measured in the time frame of 25-30 minutes. The following relationship was used to calculate Ki values:
(voxe2x88x92vs)/vs=I/(Ki (1+S/Km))
where:
vo is the velocity of the control in the absence of inhibitor;
vs is the velocity in the presence of inhibitor;
I is the concentration of inhibitor;
Ki is the dissociation constant of the enzyme:inhibitor complex;
S is the concentration of substrate;
Km is the Michaelis constant.
Using the methodology described above, some compounds of the present invention were found to exhibit a Ki of xe2x89xa610 xcexcM, thereby confirming the utility of the compounds of the present invention as effective Xa inhibitors.
Compounds tested in the above assay are considered to be active if they exhibit a Ki of xe2x89xa610 xcexcM. Preferred compounds of the present invention have Ki""s of xe2x89xa61 xcexcM. More preferred compounds of the present invention have Ki""s of xe2x89xa60.1 xcexcM. Even more preferred compounds of the present invention have Ki""s of xe2x89xa60.01 xcexcM. Still more preferred compounds of the present invention have Ki""s of xe2x89xa60.001 xcexcM.
The antithrombotic effect of compounds of the present invention can be demonstrated in a rabbit arterio-venous (AV) shunt thrombosis model. In this model, rabbits weighing 2-3 kg anesthetized with a mixture of xylazine (10 mg/kg i.m.) and ketamine (50 mg/kg i.m.) are used. A saline-filled AV shunt device is connected between the femoral arterial and the femoral venous cannulae. The AV shunt device consists of a piece of 6-cm tygon tubing that contains a piece of silk thread. Blood will flow from the femoral artery via the AV-shunt into the femoral vein. The exposure of flowing blood to a silk thread will induce the formation of a significant thrombus. After forty minutes, the shunt is disconnected and the silk thread covered with thrombus is weighed. Test agents or vehicle will be given (i.v., i.p., s.c., or orally) prior to the opening of the AV shunt. The percentage inhibition of thrombus formation is determined for each treatment group. The ID50 values (dose which produces 50% inhibition of thrombus formation) are estimated by linear regression.
The compounds of the present invention may also be useful as inhibitors of serine proteases, notably human thrombin, plasma kallikrein and plasmin. Because of their inhibitory action, these compounds are indicated for use in the prevention or treatment of physiological reactions, blood coagulation and inflammation, catalyzed by the aforesaid class of enzymes. Specifically, the compounds have utility as drugs for the treatment of diseases arising from elevated thrombin activity such as myocardial infarction, and as reagents used as anticoagulants in the processing of blood to plasma for diagnostic and other commercial purposes.
Some compounds of the present invention were shown to be direct acting inhibitors of the serine protease thrombin by their ability to inhibit the cleavage of small molecule substrates by thrombin in a purified system. In vitro inhibition constants were determined by the method described by Kettner et al. in J. Biol. Chem. 1990, 265, 18289-18297, herein incorporated by reference. In these assays, thrombin-mediated hydrolysis of the chromogenic substrate S2238 (Helena Laboratories, Beaumont, Tex.) was monitored spectrophotometrically. Addition of an inhibitor to the assay mixture results in decreased absorbance and is indicative of thrombin inhibition. Human thrombin (Enzyme Research Laboratories, Inc., South Bend, Ind.) at a concentration of 0.2 nM in 0.10 M sodium phosphate buffer, pH 7.5, 0.20 M NaCl, and 0.5% PEG 6000, was incubated with various substrate concentrations ranging from 0.20 to 0.02 mM. After 25 to 30 minutes of incubation, thrombin activity was assayed by monitoring the rate of increase in absorbance at 405 nm that arises owing to substrate hydrolysis. Inhibition constants were derived from reciprocal plots of the reaction velocity as a function of substrate concentration using the standard method of Lineweaver and Burk. Using the methodology described above, some compounds of this invention were evaluated and found to exhibit a Ki of less than 10 xcexcm, thereby confirming the utility of the compounds of the present invention as effective thrombin inhibitors.
The compounds of the present invention can be administered alone or in combination with one or more additional therapeutic agents. These include other anti-coagulant or coagulation inhibitory agents, anti-platelet or platelet inhibitory agents, thrombin inhibitors, or thrombolytic or fibrinolytic agents.
The compounds are administered to a mammal in a therapeutically effective amount. By xe2x80x9ctherapeutically effective amountxe2x80x9d it is meant an amount of a compound of the present invention that, when administered alone or in combination with an additional therapeutic agent to a mammal, is effective to prevent or ameliorate the thromboembolic disease condition or the progression of the disease.
By xe2x80x9cadministered in combinationxe2x80x9d or xe2x80x9ccombination therapyxe2x80x9d it is meant that the compound of the present invention and one or more additional therapeutic agents are administered concurrently to the mammal being treated. When administered in combination each component may be administered at the same time or sequentially in any order at different points in time. Thus, each component may be administered separately but sufficiently closely in time so as to provide the desired therapeutic effect. Other anticoagulant agents (or coagulation inhibitory agents) that may be used in combination with the compounds of this invention include warfarin and heparin, as well as other factor Xa inhibitors such as those described in the publications identified above under Background of the Invention.
The term anti-platelet agents (or platelet inhibitory agents), as used herein, denotes agents that inhibit platelet function such as by inhibiting the aggregation, adhesion or granular secretion of platelets. Such agents include, but are not limited to, the various known non-steroidal anti-inflammatory drugs (NSAIDS) such as aspirin, ibuprofen, naproxen, sulindac, indomethacin, mefenamate, droxicam, diclofenac, sulfinpyrazone, and piroxicam, including pharmaceutically acceptable salts or prodrugs thereof. Of the NSAIDS, aspirin (acetylsalicyclic acid or ASA), and piroxicam are preferred. Other suitable anti-platelet agents include ticlopidine, including pharmaceutically acceptable salts or prodrugs thereof. Ticlopidine is also a preferred compound since it is known to be gentle on the gastro-intestinal tract in use. Still other suitable platelet inhibitory agents include IIb/IIIa antagonists, thromboxane-A2-receptor antagonists and thromboxane-A2-synthetase inhibitors, as well as pharmaceutically acceptable salts or prodrugs thereof.
The term thrombin inhibitors (or anti-thrombin agents), as used herein, denotes inhibitors of the serine protease thrombin. By inhibiting thrombin, various thrombin-mediated processes, such as thrombin-mediated platelet activation (that is, for example, the aggregation of platelets, and/or the granular secretion of plasminogen activator inhibitor-1 and/or serotonin) and/or fibrin formation are disrupted. A number of thrombin inhibitors are known to one of skill in the art and these inhibitors are contemplated to be used in combination with the present compounds. Such inhibitors include, but are not limited to, boroarginine derivatives, boropeptides, heparins, hirudin and argatroban, including pharmaceutically acceptable salts and prodrugs thereof. Boroarginine derivatives and boropeptides include N-acetyl and peptide derivatives of boronic acid, such as C-terminal a-aminoboronic acid derivatives of lysine, ornithine, arginine, homoarginine and corresponding isothiouronium analogs thereof. The term hirudin, as used herein, includes suitable derivatives or analogs of hirudin, referred to herein as hirulogs, such as disulfatohirudin. Boropeptide thrombin inhibitors include compounds described in Kettner et al., U.S. Pat. No. 5,187,157 and European Patent Application Publication No. 293 881 A2, the disclosures of which are hereby incorporated herein by reference. Other suitable boroarginine derivatives and boropeptide thrombin inhibitors include those disclosed in PCT Application Publication No. 92/07869 and European Patent Application Publication No. 471,651 A2, the disclosures of which are hereby incorporated herein by reference.
The term thrombolytics (or fibrinolytic) agents (or thrombolytics or fibrinolytics), as used herein, denotes agents that lyse blood clots (thrombi). Such agents include tissue plasminogen activator, anistreplase, urokinase or streptokinase, including pharmaceutically acceptable salts or prodrugs thereof. The term anistreplase, as used herein, refers to anisoylated plasminogen streptokinase activator complex, as described, for example, in European Patent Application No. 028,489, the disclosure of which is hereby incorporated herein by reference herein. The term urokinase, as used herein, is intended to denote both dual and single chain urokinase, the latter also being referred to herein as prourokinase.
Administration of the compounds of the present invention in combination with such additional therapeutic agent, may afford an efficacy advantage over the compounds and agents alone, and may do so while permitting the use of lower doses of each. A lower dosage minimizes the potential of side effects, thereby providing an increased margin of safety.
The compounds of the present invention are also useful as standard or reference compounds, for example as a quality standard or control, in tests or assays involving the inhibition of factor Xa. Such compounds may be provided in a commercial kit, for example, for use in pharmaceutical research involving factor Xa. For example, a compound of the present invention could be used as a reference in an assay to compare its known activity to a compound with an unknown activity. This would ensure the experimenter that the assay was being performed properly and provide a basis for comparison, especially if the test compound was a derivative of the reference compound. When developing new assays or protocols, compounds according to the present invention could be used to test their effectiveness.
The compounds of the present invention may also be used in diagnostic assays involving factor Xa. For example, the presence of factor Xa in an unknown sample could be determined by addition of chromogenic substrate S2222 to a series of solutions containing test sample and optionally one of the compounds of the present invention. If production of pNA is observed in the solutions containing test sample, but not in the presence of a compound of the present invention, then one would conclude factor Xa was present.
The compounds of this invention can be administered in such oral dosage forms as tablets, capsules (each of which includes sustained release or timed release formulations), pills, powders, granules, elixirs, tinctures, suspensions, syrups, and emulsions. They may also be administered in intravenous (bolus or infusion), intraperitoneal, subcutaneous, or intramuscular form, all using dosage forms well known to those of ordinary skill in the pharmaceutical arts. They can be administered alone, but generally will be administered with a pharmaceutical carrier selected on the basis of the chosen route of administration and standard pharmaceutical practice.
The dosage regimen for the compounds of the present invention will, of course, vary depending upon known factors, such as the pharmacodynamic characteristics of the particular agent and its mode and route of administration; the species, age, sex, health, medical condition, and weight of the recipient; the nature and extent of the symptoms; the kind of concurrent treatment; the frequency of treatment; the route of administration, the renal and hepatic function of the patient, and the effect desired. A physician or veterinarian can determine and prescribe the effective amount of the drug required to prevent, counter, or arrest the progress of the thromboembolic disorder.
By way of general guidance, the daily oral dosage of each active ingredient, when used for the indicated effects, will range between about 0.001 to 1000 mg/kg of body weight, preferably between about 0.01 to 100 mg/kg of body weight per day, and most preferably between about 1.0 to 20 mg/kg/day. Intravenously, the most preferred doses will range from about 1 to about 10 mg/kg/minute during a constant rate infusion. Compounds of this invention may be administered in a single daily dose, or the total daily dosage may be administered in divided doses of two, three, or four times daily.
Compounds of this invention can be administered in intranasal form via topical use of suitable intranasal vehicles, or via transdermal routes, using transdermal skin patches. When administered in the form of a transdermal delivery system, the dosage administration will, of course, be continuous rather than intermittent throughout the dosage regimen.
The compounds are typically administered in admixture with suitable pharmaceutical diluents, excipients, or carriers (collectively referred to herein as pharmaceutical carriers) suitably selected with respect to the intended form of administration, that is, oral tablets, capsules, elixirs, syrups and the like, and consistent with conventional pharmaceutical practices.
For instance, for oral administration in the form of a tablet or capsule, the active drug component can be combined with an oral, non-toxic, pharmaceutically acceptable, inert carrier such as lactose, starch, sucrose, glucose, methyl callulose, magnesium stearate, dicalcium phosphate, calcium sulfate, mannitol, sorbitol and the like; for oral administration in liquid form, the oral drug components can be combined with any oral, non-toxic, pharmaceutically acceptable inert carrier such as ethanol, glycerol, water, and the like. Moreover, when desired or necessary, suitable binders, lubricants, disintegrating agents, and coloring agents can also be incorporated into the mixture. Suitable binders include starch, gelatin, natural sugars such as glucose or beta-lactose, corn sweeteners, natural and synthetic gums such as acacia, tragacanth, or sodium alginate, carboxymethylcellulose, polyethylene glycol, waxes, and the like. Lubricants used in these dosage forms include sodium oleate, sodium stearate, magnesium stearate, sodium benzoate, sodium acetate, sodium chloride, and the like. Disintegrators include, without limitation, starch, methyl cellulose, agar, bentonite, xanthan gum, and the like.
The compounds of the present invention can also be administered in the form of liposome delivery systems, such as small unilamellar vesicles, large unilamellar vesicles, and multilamellar vesicles. Liposomes can be formed from a variety of phospholipids, such as cholesterol, stearylamine, or phosphatidylcholines.
Compounds of the present invention may also be coupled with soluble polymers as targetable drug carriers. Such polymers can include polyvinylpyrrolidone, pyran copolymer, polyhydroxypropylmethacrylamide-phenol, polyhydroxyethylaspartamidephenol, or polyethyleneoxidepolylysine substituted with palmitoyl residues. Furthermore, the compounds of the present invention may be coupled to a class of biodegradable polymers useful in achieving controlled release of a drug, for example, polylactic acid, polyglycolic acid, copolymers of polylactic and polyglycolic acid, polyepsilon caprolactone, polyhydroxy butyric acid, polyorthoesters, polyacetals, polydihydropyrans, polycyanoacylates, and crosslinked or amphipathic block copolymers of hydrogels.
Dosage forms (pharmaceutical compositions) suitable for administration may contain from about 1 milligram to about 100 milligrams of active ingredient per dosage unit. In these pharmaceutical compositions the active ingredient will ordinarily be present in an amount of about 0.5-95% by weight based on the total weight of the composition.
Gelatin capsules may contain the active ingredient and powdered carriers, such as lactose, starch, cellulose derivatives, magnesium stearate, stearic acid, and the like. Similar diluents can be used to make compressed tablets. Both tablets and capsules can be manufactured as sustained release products to provide for continuous release of medication over a period of hours. Compressed tablets can be sugar coated or film coated to mask any unpleasant taste and protect the tablet from the atmosphere, or enteric coated for selective disintegration in the gastrointestinal tract.
Liquid dosage forms for oral administration can contain coloring and flavoring to increase patient acceptance.
In general, water, a suitable oil, saline, aqueous dextrose (glucose), and related sugar solutions and glycols such as propylene glycol or polyethylene glycols are suitable carriers for parenteral solutions. Solutions for parenteral administration preferably contain a water soluble salt of the active ingredient, suitable stabilizing agents, and if necessary, buffer substances. Antioxidizing agents such as sodium bisulfite, sodium sulfite, or ascorbic acid, either alone or combined, are suitable stabilizing agents. Also used are citric acid and its salts and sodium EDTA. In addition, parenteral solutions can contain preservatives, such as benzalkonium chloride, methyl- or propyl-paraben, and chlorobutanol.
Suitable pharmaceutical carriers are described in Remington""s Pharmaceutical Sciences, Mack Publishing Company, a standard reference text in this field.
Representative useful pharmaceutical dosage-forms for administration of the compounds of this invention can be illustrated as follows:
Capsules
A large number of unit capsules can be prepared by filling standard two-piece hard gelatin capsules each with 100 milligrams of powdered active ingredient, 150 milligrams of lactose, 50 milligrams of cellulose, and 6 milligrams magnesium stearate.
Soft Gelatin Capsules
A mixture of active ingredient in a digestable oil such as soybean oil, cottonseed oil or olive oil may be prepared and injected by means of a positive displacement pump into gelatin to form soft gelatin capsules containing 100 milligrams of the active ingredient. The capsules should be washed and dried.
Tablets
Tablets may be prepared by conventional procedures so that the dosage unit is 100 milligrams of active ingredient, 0.2 milligrams of colloidal silicon dioxide, 5 milligrams of magnesium stearate, 275 milligrams of microcrystalline cellulose, 11 milligrams of starch and 98.8 milligrams of lactose. Appropriate coatings may be applied to increase palatability or delay absorption.
Injectable
A parenteral composition suitable for administration by injection may be prepared by stirring 1.5% by weight of active ingredient in 10% by volume propylene glycol and water. The solution should be made isotonic with sodium chloride and sterilized.
Suspension
An aqueous suspension can be prepared for oral administration so that each 5 mL contain 100 mg of finely divided active ingredient, 200 mg of sodium carboxymethyl cellulose, 5 mg of sodium benzoate, 1.0 g of sorbitol solution, U.S.P., and 0.025 mL of vanillin.
Where the compounds of this invention are combined with other anticoagulant agents, for example, a daily dosage may be about 0.1 to 100 milligrams of the compound of the present invention and about 1 to 7.5 milligrams of the second anticoagulant, per kilogram of patient body weight. For a tablet dosage form, the compounds of this invention generally may be present in an amount of about 5 to 10 milligrams per dosage unit, and the second anti-coagulant in an amount of about 1 to 5 milligrams per dosage unit.
Where the compounds of the present invention are administered in combination with an anti-platelet agent, by way of general guidance, typically a daily dosage may be about 0.01 to 25 milligrams of the compound of the present invention and about 50 to 150 milligrams of the anti-platelet agent, preferably about 0.1 to 1 milligrams of the compound of the present invention and about 1 to 3 milligrams of anti-platelet agents, per kilogram of patient body weight.
Where the compounds of the present invention are administered in combination with thrombolytic agent, typically a daily dosage may be about 0.1 to 1 milligrams of the compound of the present invention, per kilogram of patient body weight and, in the case of the thrombolytic agents, the usual dosage of the thrombolyic agent when administered alone may be reduced by about 70-80% when administered with a compound of the present invention.
Where two or more of the foregoing second therapeutic agents are administered with the compound of the present invention, generally the amount of each component in a typical daily dosage and typical dosage form may be reduced relative to the usual dosage of the agent when administered alone, in view of the additive or synergistic effect of the therapeutic agents when administered in combination.
Particularly when provided as a single dosage unit, the potential exists for a chemical interaction between the combined active ingredients. For this reason, when the compound of the present invention and a second therapeutic agent are combined in a single dosage unit they are formulated such that although the active ingredients are combined in a single dosage unit, the physical contact between the active ingredients is minimized (that is, reduced). For example, one active ingredient may be enteric coated. By enteric coating one of the active ingredients, it is possible not only to minimize the contact between the combined active ingredients, but also, it is possible to control the release of one of these components in the gastrointestinal tract such that one of these components is not released in the stomach but rather is released in the intestines. One of the active ingredients may also be coated with a material that effects a sustained-release throughout the gastrointestinal tract and also serves to minimize physical contact between the combined active ingredients. Furthermore, the sustained-released component can be additionally enteric coated such that the release of this component occurs only in the intestine. Still another approach would involve the formulation of a combination product in which the one component is coated with a sustained and/or enteric release polymer, and the other component is also coated with a polymer such as a low-viscosity grade of hydroxypropyl methylcellulose (HPMC) or other appropriate materials as known in the art, in order to further separate the active components. The polymer coating serves to form an additional barrier to interaction with the other component.
These as well as other ways of minimizing contact between the components of combination products of the present invention, whether administered in a single dosage form or administered in separate forms but at the same time by the same manner, will be readily apparent to those skilled in the art, once armed with the present disclosure.
Other features of the invention will become apparent in the course of the following descriptions of exemplary embodiments that are given for illustration of the invention and are not intended to be limiting thereof.


The structure of the growth hormone release inhibiting factor, somatostatin, has been determined by Brazeau et al., Science, 179, 77(1973). Several techniques for synthesizing somatostatin have been reported in the literature, including the solid phase method of Rivier, J.A.C.S. 96, 2986(1974) and the solution methods of Sarantakis et al., Biochemical Biophysical Research Communications 54, 234(1973) and Immer et al., Helv. Chim. Acta, 57, 730(1974).