作者:Reik Löser、Klaus Schilling、Elke Dimmig、Michael Gütschow
DOI:10.1021/jm050686b
日期:2005.12.1
were introduced, and systematic fluorine, bromine, and phenyl scans for phenylalanine in the P2 position were performed. Moreover, the N-terminal protection was varied. Kinetic investigations were carried out with cathepsin L, S, and K as well as papain. Changes in the backbone structure of the parent N-(tert-butoxycarbonyl)-phenylalanyl-glycine-nitrile (16), such as the introduction of an R-configured
制备一系列44个在P2位具有各种氨基酸和在P1位具有甘氨酸的二肽腈,并将其评估为半胱氨酸蛋白酶的抑制剂。关于P2-S2相互作用对酶抑制剂复合物形成的重要贡献,重点是将结构多样性引入P2侧链。引入了非蛋白氨基酸,并进行了系统的氟,溴和苯基扫描,以检测P2位置的苯丙氨酸。而且,N-末端保护是多种多样的。使用组织蛋白酶L,S和K以及木瓜蛋白酶进行动力学研究。母体N-(叔丁氧羰基)-苯丙氨酰基-甘氨酸-腈的骨架结构变化(16),例如将R构型的氨基酸或氮杂氨基酸引入P2以及P1氮的甲基化,会导致亲和力的急剧下降。示例性地,16的氰基被醛或甲基酮官能团取代。关于靶酶的底物特异性,讨论了构效关系。