  For multipartite entangled states, entanglement monogamy is an important
property. We investigate the monogamy relations for multiqubit generalized
W-class states. We present new analytical monogamy inequalities satisfied by
the $x$-th power of the dual of convex-roof extended negativity, namely CRENOA,
for $x\geq2$ and $x\leq0$. As for The squared R\'enyi-$\alpha$ entanglement
(SR$\alpha$E) with $\alpha$ in the region $[(\sqrt 7 - 1)/2,(\sqrt {13} -
1)/2]$, we show the upper bound of SR$\alpha$E.
