Peptide-Based Inhibitors of the Hepatitis C Virus NS3 Protease: Structure−Activity Relationship at the <i>C</i>-Terminal Position
作者:Jean Rancourt、Dale R. Cameron、Vida Gorys、Daniel Lamarre、Martin Poirier、Diane Thibeault、Montse Llinàs-Brunet
DOI:10.1021/jm030573x
日期:2004.5.1
position of a tetrapeptide such as 1 led to a significant gain in the inhibitory enzymatic activity, as compared to the corresponding norvaline derivative 2, prompted a systematic study of substituent effects on the three-membered ring. We report herein that the incorporation of a vinyl group with the proper configuration onto this small cycle produced inhibitors of the protease with much improved in vitro
呈现了丙型肝炎病毒NS3蛋白酶的基于肽的抑制剂的C末端位置的结构活性关系。先前已经描述了观察到源自NS5A / 5B切割位点的底物的N-末端切割产物(DDIVPC-OH)是NS3蛋白酶的竞争性抑制剂。在这些基于肽的抑制剂的P1位置发现的化学上不稳定的半胱氨酸残基可以用正缬氨酸残基代替,但会大大降低酶的活性。与相应的正缬氨酸衍生物2相比,四肽P1位(例如1)的氨基环丙烷羧酸(ACCA)残基导致抑制酶活性的显着提高,这一事实促使系统地研究了取代基对甲壳素的影响。三元环。我们在本文中报道,将具有适当构型的乙烯基掺入该小循环中产生了蛋白酶抑制剂,其体外效力大大提高。乙烯基-ACCA是第一个报道的含有P1残基的羧酸,该羧酸可产生NS3蛋白酶抑制剂,其活性远高于在相同位置上含有半胱氨酸的抑制剂。