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.
本发明包括蛋白质Ras的
CAAX基序的类似物,该基序在体内通过法尼酰化进行修饰。这些
CAAX类似物抑制了Ras的法尼酰化。此外,这些
CAAX类似物与以前描述的抑制Ras法尼基转移酶的类似物不同,因为它们不具有
硫醇基团。缺乏
硫醇基团在改善动物体内药代动力学行为、预防
硫醇依赖的
化学反应(如快速自氧化和与内源
硫醇的二
硫键形成)以及减少系统毒性方面提供了独特优势。此外,本发明还包括含有这些法尼基转移酶
抑制剂的化疗组合物和其生产方法。