Peptidomimetics of the formula C.beta.X where C is cysteine, X is any naturally occuring amino acid, and .beta. is a hydrophobic spacer, most notably 2-phenyl-4-aminobenzoic acid. These compounds are effective inhibitors of p2lras farnesyltrasferase, block Ras-dependent oncogenic signalling and inhibit human tumor growth in vivo in animal models. Pro-drugs made by functionalizing terminal amino and carboxylic acid groups of peptides and peptidomimetics are also disclosed. Such functionalized derivatives demonstrate increased cell uptake. Other structural modifications are also disclosed.
公式为C.beta.X的肽类模拟物,其中C代表半胱
氨酸,X代表任何自然存在的
氨基酸,.beta.代表疏
水间隔物,尤其是2-苯基-4-
氨基
苯甲酸。这些化合物是p2lras法尼基转移酶的有效
抑制剂,可以阻断Ras依赖的致癌信号传导,并在动物模型中有效抑制人类肿瘤生长。还披露了通过功能化肽和肽类模拟物的末端
氨基和羧基团制备的前药。这些功能化衍
生物表现出增加的细胞摄取。还披露了其他结构修饰。