phosphorus-containing inhibitors are described, but all-carboxylate compounds are inactive. Compounds were synthesized to probe the postulated cyclic transition-state of the enzyme-catalyzed reaction. In addition, the associated role of the protonation state at the phosphorus acid moiety was evaluated using phosphinic and carboxylic acids. Although none of the synthesized inhibitors is more potent than N-pho
报道了一系列新型
天冬氨酸转
氨甲酰酶(ATCase)
抑制剂的设计、合成和评估。描述了几种亚微摩尔含
磷抑制剂,但全
羧酸盐化合物均无活性。合成化合物以探测酶催化反应的假定循环过渡态。此外,使用
次膦酸和
羧酸评估了含
磷酸部分的质子化状态的相关作用。尽管合成的
抑制剂均不比N-膦酰基-
L-天冬氨酸 (PA
LA) 更有效,但这些化合物提供了有用的机制信息,以及未来
抑制剂和/或前药设计的基础。