<i>N</i>-[2,2-Dimethyl-3-(<i>N</i>-(4-cyanobenzoyl)amino)nonanoyl]-<scp>l</scp>-phenylalanine Ethyl Ester as a Stable Ester-Type Inhibitor of Chymotrypsin-like Serine Proteases: Structural Requirements for Potent Inhibition of <i>α</i>-Chymotrypsin
作者:Kiyoko Iijima、Jun Katada、Emiko Yasuda、Isao Uno、Yoshio Hayashi
DOI:10.1021/jm980562h
日期:1999.1.1
We introduce a new potent inhibitor, N-[2, 2-dimethyl-3-(N-(4-cyanobenzoyl)amino)nonanoyl]-L-phenylalanine ethyl ester (3), which preferentially inhibits serine proteases belonging to a chymotrypsin superfamily. This inhibitor, despite consisting of a stable ethyl ester structure, showed strong inhibitory activities toward bovine alpha-chymotrypsin, human cathepsin G, and porcine elastase by acting
我们介绍了一种新的强效抑制剂,N- [2,2-二甲基-3-(N-(4-氰基苯甲酰基)氨基)壬酰基] -L-苯丙氨酸乙酯(3),它优先抑制属于胰凝乳蛋白酶超家族的丝氨酸蛋白酶。 。该抑制剂尽管由稳定的乙酯结构组成,但通过充当酰化剂,对牛α-胰凝乳蛋白酶,人组织蛋白酶G和猪弹性蛋白酶显示出强大的抑制活性。计算出的针对α-胰凝乳蛋白酶的失活速率常数(运动)和酶抑制剂解离常数(Ki)分别为0.0028 s-1和0.0045 microM(运动/ Ki = 630 000 M-1 s-1)。这些动力学参数表明该抑制剂是有史以来最强大的α-胰凝乳蛋白酶灭活剂之一。根据3的类似物的结构-活性关系(SAR)和结构-稳定性关系研究,在分子的三个部分(即4-氰基苯基),β-氨基酸残基处的β-取代基上进行了修饰以及酯结构,我们认为3的强抑制活性归因于以下结构特征:(1)强制特定酰基酶形成的乙酯,(2)β位置的正