A series of potent dipeptide and tripeptide alpha-ketohydroxamic esters was prepared as inhibitors of recombinant human calpain I. Compound 3c, a Cbz-Leu-Phe hydroxamate, displayed the greatest potency against calpain I (IC(50)=6nM), while two compounds, 3l and 3m, both possessing the Cbz-Leu-Leu-Phe sequence, were the most potent (IC(50)=0.2 microM) in a MOLT-4 cell assay.
制备了一系列有效的二肽和三肽α-酮异羟
肟酸酯作为
重组人
钙蛋白酶I的
抑制剂。化合物3c,一种Cbz-Leu-Phe异羟
肟酸酯,对
钙蛋白酶I具有最大的效力(IC(50)= 6nM),而两种在MOLT-4
细胞分析中,具有Cbz-Leu-Leu-Phe序列的3l和3m化合物是最有效的(IC(50)= 0.2 microM)。