Approaches to isozyme-specific inhibitors. 17. Attachment of a selectivity-inducing substituent to a multisubstrate adduct. Implications for facilitated design of potent, isozyme-selective inhibitors
作者:Francis Kappler、Alexander Hampton
DOI:10.1021/jm00171a032
日期:1990.9
The synthesis is described of a methyl-C5' adduct of L-methionine and beta,gamma-ATP bearing a 6-S-n-Bu group in place of the 6-NH2 group of the parent adduct. The latter is a potent multisubstrate inhibitor in a model system consisting of the M-2 and M-T isozymes of rat methionine adenosyltransferase. When attached to ATP, the 6-S-n-Bu group induces selectivity for M-T inhibition by elevating affinity
描述了L-蛋氨酸的甲基-C5'加合物和带有6-Sn-Bu基团的β-γ-ATP代替母体加合物的6-NH2基团。后者是由大鼠甲硫氨酸腺苷基转移酶的M-2和MT同工酶组成的模型系统中的有效多底物抑制剂。当与ATP连接时,6-Sn-Bu基团通过提高与MT而不是M-2的ATP位点的亲和力来诱导对MT抑制的选择性。在上述加合物中,它发挥了相似的作用,表现为选择性和对MT的抑制作用增强。这提供了该方法产生相对容易地产生具有中等同工酶选择性的有效抑制剂的能力的第二说明。本文概述了适度的(ca. 底物衍生物通常在各种原子上带有一个短的取代基,通常表现出10倍的同工酶选择性。这与同工酶选择性抑制剂设计的另一种可行方法的特点一起,表明了一种方法,该方法具有促进对同工酶选择性和针对给定代谢转化具有选择性的有效抑制剂设计的潜力。它包括(1)评价上述类型的底物衍生物作为化学治疗上重要的同功酶(靶标和非靶标)的抑制剂的