(2S)-2-(3,4-Dichlorophenyl)-1-[N-(methyl)-N-(phenylsulfonyl)amino]-4-[spiro(2,3-dihydrobenzthiophene-3,4'-piperidin-1'-yl)]butane S-oxide (3) has been identified as a potent CCR5 antagonist lead structure having an IC50 = 35 nM. Herein, we describe the structure-activity relationship studies directed toward the requirement for and optimization of the C-2 phenyl fragment. The phenyl was found to be important for CCR5 antagonism and substitution was limited to small moieties at the 3-position (13 and 16. X=H, 3-F, 3-Cl, 3-Me). (C) 2001 Published by Elsevier Science Ltd.
(2S)-2-(3,4-二
氯苯基)-1-[N-(甲基)-N-(苯基亚砜)
氨基]-4-[螺(2,3-二氢
苯并噻吩-3,4'-
哌啶-1'-基)]
丁烷 S-氧化物 (3) 已被鉴定为一种具有强效 CCR5 拮抗活性的先导结构化合物,其 IC50 值为 35 nM。本文中,我们描述了针对 C-2 苯基片段的需求和优化的结构-活性关系研究。研究发现,苯基对于 CCR5 拮抗活性至关重要,取代基仅限于在 3 位引入小型基团(如 13 和 16,当 X=H、3-F、3-Cl、3-Me 时)。(C) 2001 Elsevier Science Ltd. 出版。