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,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类似物不同于先前描述的作为Ras法尼酰转移酶
抑制剂的类似物,因为它们没有
硫醇基团。缺乏
硫醇基团在改善动物的药代动力学行为、预防
硫醇依赖的
化学反应(如快速自氧化和与内源
硫醇形成二
硫键)以及降低全身毒性方面具有独特优势。本发明还包括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。