A synthetic method for diversification of the P1′ substituent in phosphinic dipeptides as a tool for exploration of the specificity of the S1′ binding pockets of leucine aminopeptidases
作者:Stamatia Vassiliou、Metaxia Xeilari、Athanasios Yiotakis、Jolanta Grembecka、Małgorzata Pawełczak、Paweł Kafarski、Artur Mucha
DOI:10.1016/j.bmc.2007.02.042
日期:2007.5
proteolytic enzymes, was elaborated. The procedure was based on parallel derivatization of the amino group in the suitably protected phosphinate building blocks with appropriate alkyl and aryl halides. This synthetic strategy represents an original approach to phosphinic dipeptide chemistry. Its usefulness was confirmed by obtaining a series of P1' modified phosphinic dipeptides, inhibitors of cytosolic leucine
阐述了一种新的,通用的和通用的使次膦酸盐假二肽中的P1'位置多样化的方法,次膦酸盐假二肽可能是蛋白水解酶的抑制剂。该程序基于适当保护的次膦酸酯结构单元中的氨基与适当的烷基和芳基卤化物平行衍生而来。这种合成策略代表了次膦酸二肽化学的原始方法。通过基于结合在酶活性中的高苯丙氨酰基-苯丙氨酸类似物(hPheP [CH(2)] Phe)的结构的计算机辅助设计,获得了一系列P1'修饰的次膦酸二肽(胞质亮氨酸氨基肽酶的抑制剂),证实了其有用性。网站作为主导结构。在这种方法中,抑制剂P1'片段与酶的S1'区之间存在新颖的相互作用,尤其是涉及Asn330和Asp332酶残基的氢键被预测。讨论了对胞质亮氨酸氨基肽酶和氨基肽酶N的设计,合成和活性评估的细节。尽管先导化合物的效力没有提高,但是观察到合成抑制剂对两种研究的酶的显着选择性。