Design and synthesis of an androgen receptor pure antagonist (CH5137291) for the treatment of castration-resistant prostate cancer
作者:Hitoshi Yoshino、Haruhiko Sato、Takuya Shiraishi、Kazutaka Tachibana、Takashi Emura、Akie Honma、Nobuyuki Ishikura、Toshiaki Tsunenari、Miho Watanabe、Ayako Nishimoto、Ryo Nakamura、Toshito Nakagawa、Masateru Ohta、Noriyuki Takata、Kentaro Furumoto、Kazuya Kimura、Hiromitsu Kawata
DOI:10.1016/j.bmc.2010.10.023
日期:2010.12
A series of 5,5-dimethylthiohydantoin derivatives were synthesized and evaluated for androgen receptor pure antagonistic activities for the treatment of castration-resistant prostate cancer. Since CH4933468, which we reported previously, had a problem with agonist metabolites, novel thiohydantoin derivatives were identified by applying two strategies. One was the replacement of the alkylsulfonamide moiety by a phenylsulfonamide to avoid the production of agonist metabolites. The other was the replacement of the phenyl ring with a pyridine ring to improve in vivo potency and reduce hERG affinity. Pharmacological assays indicated that CH5137291 (17b) was a potent AR pure antagonist which did not produce the agonist metabolite. Moreover, CH5137291 completely inhibited in vivo tumor growth of LNCaP-BC2, a castration-resistant prostate cancer model. (C) 2010 Elsevier Ltd. All rights reserved.