Discovery of a Series of Cyclohexylethylamine-Containing Protein Farnesyltransferase Inhibitors Exhibiting Potent Cellular Activity
作者:Kenneth J. Henry,、James Wasicak、Andrew S. Tasker、Jerome Cohen、Patricia Ewing、Michael Mitten、John J. Larsen、Douglas M. Kalvin、Rolf Swenson、Shi-Chung Ng、Badr Saeed、Sajeev Cherian、Hing Sham、Saul H. Rosenberg
DOI:10.1021/jm990335v
日期:1999.11.1
Sebti-Hamilton type peptidomimetic farnesyltransferase (FTase) inhibitor FTI-276 (1) led to the identification of 6 as a potent enzyme inhibitor (IC(50) of 8 nM) which lacked the problematic thiol residue which had been a common theme in many of the more important FTase inhibitors reported to date. It has previously been disclosed that addition of o-tolyl substitution to FTase inhibitors of the general description
基于Sebti-Hamilton型拟肽法呢基转移酶(FTase)抑制剂FTI-276(1)的仲苄基胺文库的合成导致6被鉴定为有效的酶抑制剂(IC(50)为8 nM),缺乏有问题的硫醇残基,这是迄今为止报道的许多更重要的FTase抑制剂的常见主题。先前已经公开了在一般描述2的FTase抑制剂中添加邻甲苯基取代对整个细胞中的FTase抑制和Ras异戊二烯基化抑制均具有有益的作用。这两个观察结果的结合使我们合成了7种有效的FTase抑制剂,其在体外抑制FTase的IC(50)为0.16 nM,而在抑制全细胞Ras异戊二烯化时的EC(50)为190 nM。通过经典药物化学对7的修饰导致发现了一系列有效的FTase抑制剂,最终鉴定出25个,其IC(50)为0.20 nM,EC(50)为4.4 nM。在人胰腺癌裸鼠异种移植模型(MiaPaCa细胞)中进行的体内测试显示,口服25剂量可显着减弱这种侵袭性肿瘤细胞系的生长。