申请人:Merck & Co., Inc.
公开号:US05703241A1
公开(公告)日:1997-12-30
The present invention comprises an analog of the CA.sub.1 A.sub.2 X motif of the protein Ras that is modified by farnesylation in vivo. This CA.sub.1 A.sub.2 X analog inhibits the farnesyl-protein transferase and the farnesylation of certain proteins. Furthermore, this CA.sub.1 A.sub.2 X analog differs from most compounds previously described as inhibitors of farnesyl-protein transferase in that it does not have a thiol moiety. The lack of the thiol offers unique advantages in terms of improved pharmacokinetic behavior in animals, prevention of thiol-dependent chemical reactions, such as rapid autoxidation and disulfide formation with endogenous thiols, and reduced systemic toxicity. The compound of the instant invention also incorporates a cyclic amine moiety in the A.sup.1 position of the motif. Further contained in this invention are chemotherapeutic compositions containing this farnesyl transferase inhibitor and methods for its production.
本发明包括一种被活性化法内酰化修饰的Ras蛋白CA.sub.1 A.sub.2 X基序的类似物。这种CA.sub.1 A.sub.2 X类似物抑制了法尼酰-蛋白质转移酶和某些蛋白质的法尼酰化。此外,这种CA.sub.1 A.sub.2 X类似物与先前描述的大多数抑制法尼酰-蛋白质转移酶的化合物不同,因为它没有硫醇基团。缺乏硫醇具有改善动物药代动力学行为、防止硫醇依赖性化学反应(例如快速自氧化和与内源性硫醇形成二硫键)和减少系统毒性的独特优点。本发明的化合物还在基序的A.sup.1位包含了一个环状胺基团。此外,本发明还包括含有这种法尼酰转移酶抑制剂的化疗组合物和其生产方法。