Hydroxamic Acid-Based Bisubstrate Analog Inhibitors of Ras Farnesyl Protein Transferase
作者:Dinesh V. Patel、Marian G. Young、Simon P. Robinson、Lisa Hunihan、Brenda J. Dean、Eric M. Gordon
DOI:10.1021/jm960190h
日期:1996.1.1
microM), a bisubstrate analog involving anchorage of farnesyl and tripeptide groups by a hydroxamic acid-embedded linker. Starting from 16, a 1 order of magnitude improvement in in vitro potency was obtained by optimization of the linker (20, I50 = 4.35 microM). An additional 13-fold enhancement was achieved by substituting the tripeptide moiety VLS in 20 by VVM (23, I50 = 0.33 microM). The dependence of
描述了新颖的,基于异羟肟酸的法呢基蛋白转移酶(FPT)的集体双底物类似物抑制剂的合理设计,合成和活性。这类化合物在结构上与常规FPT抑制剂不同,它们是非巯基的,并且是基于双底物的,而不是肽或FPP衍生的抑制剂。N-甲基异羟肟酸取代四肽CVLS(I50 = 1 microM)的巯基具有有害作用(10,I50> 360 microM),而双底物类似物16(I50 = 42.5 microM)实现了中等抑制作用。涉及通过异羟肟酸嵌入的接头锚定法呢基和三肽基团。从16开始,通过优化接头(20,I50 = 4.35 microM)获得了1个数量级的体外效价提高。通过用VVM取代20中的三肽部分VLS,可实现13倍的额外增强(23,I50 = 0.33 microM)。这些抑制剂对它们的肽和法呢基亚基的依赖性暗示了它们的双底物性质。与最初的铅16 [I50 = 42.5 microM]相比,化合物23(I50