1 research outputs found
A New Avenue toward Androgen Receptor Pan-antagonists: C2 Sterically Hindered Substitution of Hydroxy-propanamides
The androgen receptor (AR) represents
the primary target for prostate
cancer (PC) treatment even when the disease progresses toward androgen-independent
(AIPC) or castration-resistant (CRPC) forms. Because small chemical
changes in the structure of nonsteroidal AR ligands determine the
pharmacological responses of AR, we developed a novel stereoselective
synthetic strategy that allows sterically hindered C2-substituted
bicalutamide analogues to be obtained. Biological and theoretical
evaluations demonstrate that C2-substitution with benzyl and phenyl
moieties is a new, valuable option toward improving pan-antagonist
behavior. Among the synthesized compounds, (<i>R</i>)-<b>16m</b>, when compared to casodex, (<i>R</i>)-bicalutamide,
and enzalutamide, displayed very promising in vitro activity toward
five different prostate cancer cell lines, all representative of CPRC
and AIPC typical mutations. Despite being less active than (<i>R</i>)-bicalutamide, (<i>R</i>)-<b>16m</b> also
displayed marked in vivo antitumor activity on VCaP xenografts and
thus it may serve as starting point for developing novel AR pan-antagonists