Studies of non-nucleoside HIV-1 reverse transcriptase inhibitors. Part 2: Synthesis and structure–activity relationships of 2-cyano and 2-hydroxy thiazolidenebenzenesulfonamide derivatives
作者:Naoyuki Masuda、Osamu Yamamoto、Masahiro Fujii、Tetsuro Ohgami、Jiro Fujiyasu、Toru Kontani、Ayako Moritomo、Masaya Orita、Hiroyuki Kurihara、Hironobu Koga、Shunji Kageyama、Mitsuaki Ohta、Hiroshi Inoue、Toshifumi Hatta、Masafumi Shintani、Hiroshi Suzuki、Kenji Sudo、Yasuaki Shimizu、Eiichi Kodama、Masao Matsuoka、Masatoshi Fujiwara、Tomoyuki Yokota、Shiro Shigeta、Masanori Baba
DOI:10.1016/j.bmc.2004.11.045
日期:2005.2
In a previous study, we described the structure-activity relationships (SARs) for a series of thiazolidenebenzenesulfonamide derivatives. These compounds were found to be highly potent inhibitors of the wild type (WT) and Y181C mutant reverse transcriptases (RTs) and modest inhibitors of K 103N RT. These molecules are thus considered to be a novel class of non-nucleoside HIV-1 RT inhibitors (NNRTIs). In this paper, we have examined the effects of substituents on both the thiazolidene and benzenesulfonamide moieties. Introduction of a 2-cyanophenyl ring into these moieties significantly enhanced anti-HIV-1 activity, whereas a 2-hydroxyphenyl group endowed potent activity against RTs, including K103N and Y181C mutants. Among the series of molecules examined, 101 and 18b (YM-228855), combinations of 2-cyanophenyl and 4-methyl-5-isopropylthiazole moieties, showed extremely potent anti-HIV-1 activity. The EC50 values of 101 and 18b were 0.0017 and 0.0018 muM, respectively. These values were lower than that of efavirenz (3). Compound 11g (YM-215389), a combination of 2-hydroxyphenyl and 4-chloro-5-isopropylthiazole moieties, proved to be the most active against both K103N and Y181C RTs with IC50 values of 0.043 and 0.013 muM, respectively. (C) 2004 Elsevier Ltd. All rights reserved.