Design, synthesis, and biological evaluation of 3-aryl-3-hydroxy-1-phenylpyrrolidine derivatives as novel androgen receptor antagonists
作者:Satoshi Yamamoto、Hiromi Kobayashi、Tomohiro Kaku、Katsuji Aikawa、Takahito Hara、Masuo Yamaoka、Naoyuki Kanzaki、Atsushi Hasuoka、Atsuo Baba、Mitsuhiro Ito
DOI:10.1016/j.bmc.2012.11.001
日期:2013.1
We designed and synthesized a series of 3-aryl-3-hydroxy-1-phenylpyrrolidine derivatives D and evaluated their potential as novel androgen receptor (AR) antagonists therapeutically effective against castration-resistant prostate cancer (CRPC). Introduction of a methyl group at the 2-position (R-2) of the pyrrolidine ring increased the AR binding affinity. The (2S, 3R) configuration of the pyrrolidine ring was favorable for the AR antagonistic activity. It was found that introduction of an amide substituent (R-1) and a pyridin-3-yl group (Q) was effective for reducing the AR agonistic activity which appeared during the optimization of lead compound 6. Compound 54 showed potent antitumor effects against a CRPC model of LNCaP-hr cell line in a mouse xenograft, in which bicalutamide exhibited only partial suppression of tumor growth. Thus, the pyrrolidine derivatives such as 54 are novel AR antagonists, and their properties having efficacy against CRPC are distinct from those of a representative first-generation antagonist, bicalutamide. (C) 2012 Elsevier Ltd. All rights reserved.