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。