1,2-Benzothiazine 1,1-Dioxide P<sub>2</sub>−P<sub>3</sub> Peptide Mimetic Aldehyde Calpain I Inhibitors
作者:Gregory J. Wells、Ming Tao、Kurt A. Josef、Ron Bihovsky
DOI:10.1021/jm010178b
日期:2001.10.1
A series of peptide mimetic aldehyde inhibitors of calpain I was prepared in which the P(2) and P(3) amino acids were replaced by substituted 3,4-dihydro-1,2-benzothiazine-3-carboxylate 1,1-dioxides. The effect of 2, 6, and 7-benzothiazine substituents and the P(1) amino acid was examined. Potency of these inhibitors, 15c-p, against human recombinant calpain I is particularly dependent upon the 2-substituent
制备了一系列钙蛋白酶I的肽模拟醛抑制剂,其中P(2)和P(3)氨基酸被取代的3,4-二氢-1,2-苯并噻嗪-3-羧酸1,1-二氧化物取代。检查了2、6和7-苯并噻嗪取代基和P(1)氨基酸的作用。这些抑制剂15c-p对人重组钙蛋白酶I的效力特别取决于2-取代基,其中甲基和乙基通常比氢,异丙基,异丁基或苄基更有效。15m的更有效的非对映异构体在3,4-二氢-1,2-苯并噻嗪的3位上具有(S)绝对构型。该系列中最佳抑制剂的效能(IC(50)= 5-7 nM)与在P(2)处带有L-Leu或L-Val残基的常规N-苄氧基羰基二肽醛抑制剂的性能相比具有优势。