17,20-Lyase inhibitors. Part 3: Design, synthesis, and structure–activity relationships of biphenylylmethylimidazole derivatives as novel 17,20-lyase inhibitors
作者:Tomohiro Kaku、Saori Tsujimoto、Nobuyuki Matsunaga、Toshimasa Tanaka、Takahito Hara、Masuo Yamaoka、Masami Kusaka、Akihiro Tasaka
DOI:10.1016/j.bmc.2011.02.009
日期:2011.4
A novel series of biphenylylmethylimidazole derivatives and related compounds were synthesized as inhibitors of 17,20-lyase, a key enzyme in the production of steroid hormones, and their biological activities were evaluated. In an attempt to identify potent and selective inhibitors of 17,20-lyase over the related CYP3A4 enzyme, a homology model for human 17,20-lyase was developed using the X-ray crystallographic
合成了一系列新颖的联苯甲酰基甲基咪唑衍生物和相关化合物,作为类固醇激素生产中的关键酶17,20-裂合酶的抑制剂,并对其生物学活性进行了评估。为了确定17,20-裂解酶对相关CYP3A4酶的有效和选择性抑制剂,使用哺乳动物CYP2C5酶的X射线晶体学结构开发了人17,20-裂解酶的同源性模型。借助分子建模,对联苯部分进行了优化,得到了乙酰胺衍生物,将其通过HPLC拆分,得到了活性(-)-对映异构体。所获得的活性对映异构体不仅显示出对大鼠和人的17,20-裂合酶均具有有效的抑制作用,且IC 50值分别为14和26 nM,但对CYP3A4抑制17,20-裂解酶的选择性也极好(> 300倍)。此外,单只口服给药后,该活性对映异构体可显着降低猴子模型中的血清睾丸激素和DHEA浓度。活性对映体的不对称合成也通过使用非对映选择性格氏反应的手性中间体进行。