作者:Masayuki Nakamura、Hiroyuki Miyashita、Masazumi Yamaguchi、Yoshihisa Shirasaki、Yoshikuni Nakamura、Jun Inoue
DOI:10.1016/j.bmc.2003.09.031
日期:2003.12
form a cyclic hemiacetal, was identified as calpain inhibitors. The placement of isobutyl group at the 2-position of the 3-morpholinone was the most effective modification for inhibiting micro- and m-calpains. Substitutions of benzyl at the 5-position in the S-configuration had virtually no effect on inhibitory activity. Several compounds showed appreciable selectivity for calpains over cathepsin B. NMR
一系列新的6-羟基-3-吗啉酮,其中功能性醛和羟基的P(2)站点形成环状半缩醛,被确定为钙蛋白酶抑制剂。在3-吗啉酮的2-位上放置异丁基是抑制微钙蛋白酶和间-钙蛋白酶最有效的修饰。S-构型的5-位上的苄基取代实际上对抑制活性没有影响。几种化合物对钙蛋白酶的选择性优于组织蛋白酶B。NMR实验表明,代表性的6-羟基-3-吗啉酮10a(SNJ-1757)比相应的醛抑制剂24对亲核攻击更稳定。此外,6-羟基-3在体外实验中,证明吗啡酮10a具有比醛类抑制剂24更好的角膜通透性。