申请人:Merck & Co., Inc.
公开号:US05652257A1
公开(公告)日:1997-07-29
The present invention comprises analogs of the CAAX motif of the protein Ras that is modified by farnesylation in vivo. These CAAX analogs inhibit the farnesylation of Ras. Furthermore, these CAAX analogues differ from those previously described as inhibitors of Ras farnesyl transferase in that they do 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. Further contained in this invention are chemotherapeutic compositions containing these farnesyl transferase inhibitors and methods for their production.
本发明涉及一种蛋白质Ras的CAAX基序的类似物,该基序在体内经过法尼酰化修饰。这些CAAX类似物抑制Ras的法尼酰化。此外,这些CAAX类似物与以前描述的抑制Ras法尼酰转移酶的类似物不同,因为它们没有硫醇基团。缺乏硫醇基团在动物的药代动力学行为方面具有独特的优势,可以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,并减少系统毒性。本发明还涵盖了含有这些法尼酰转移酶抑制剂的化疗组合物和其生产方法。