Discovery of benzimidazole derivatives as orally active renin inhibitors: Optimization of 3,5-disubstituted piperidine to improve pharmacokinetic profile
作者:Hidekazu Tokuhara、Yasuhiro Imaeda、Yoshiyuki Fukase、Koichi Iwanaga、Naohiro Taya、Koji Watanabe、Ray Kanagawa、Keisuke Matsuda、Yumiko Kajimoto、Keiji Kusumoto、Mitsuyo Kondo、Gyorgy Snell、Craig A. Behnke、Takanobu Kuroita
DOI:10.1016/j.bmc.2018.04.051
日期:2018.7
S3 pocket. In the course of modification, renin inhibitory activity was enhanced by the formation of an additional hydrogen bonding with the hydroxyl group of Thr77. Consequently, a series of novel benzimidazole derivatives were discovered as potent and orally bioavailable renin inhibitors. Among those, compound 13 exhibited more than five-fold of plasma renin inhibition than aliskiren in cynomolgus
我们先前确定了2-叔丁基-4-[(3-甲氧基丙基)氨基] -N-(2-甲基丙基)-N-[(3S,5R)-5-(吗啉-4-基羰基)哌啶-3- yl] pyrimidine-5-carboxamide 3作为有效的肾素抑制剂。由于3在大鼠中显示出不可接受的低生物利用度(BA),因此使用SBDD并着重于理化性质进行结构修饰,以改善其PK谱,同时保持肾素抑制活性。在嘧啶的4-位上连接的氨基转化为亚甲基可改善PK谱并降低肾素抑制活性。探索了具有碳侧链的新中心核,以提高效能。我们设计了一系列与亲脂性S3口袋相互作用的5元唑和稠合杂环。在修改过程中,通过与Thr77的羟基形成额外的氢键,肾素抑制活性得到增强。因此,发现了一系列新型的苯并咪唑衍生物作为有效的和口服可生物利用的肾素抑制剂。在这些化合物中,按剂量比,化合物13在食蟹猴中表现出的血浆肾素抑制能力比阿利吉仑高出五倍。