Synthesis and Structure-Activity Relationships of Gelatinase Inhibitors Derived from Matlystatins.
作者:Kazuhiko TAMAKI、Kazuhiko TANZAWA、Shinwa KURIHARA、Tetsuo OIKAWA、Sayako MONMA、Kohei SHIMADA、Yukio SUGIMURA
DOI:10.1248/cpb.43.1883
日期:——
To investigate a series of new inhibitors of gelatinases based on matlystatin B (1b), extensive structure-activity relationship studies were performed. The new derivatives were evaluated in vitro for the ability to inhibit gelatinases. The inhibitory activities against thermolysin were also assayed to test the compounds' selectivity. Among the compounds modified at the P'3 moiety, the N-methylamide
为了研究一系列基于matlystatin B(1b)的明胶酶抑制剂,进行了广泛的构效关系研究。在体外评估了新衍生物抑制明胶酶的能力。还测定了对嗜热菌素的抑制活性以测试化合物的选择性。在P'3部分修饰的化合物中,N-甲基酰胺衍生物5 g对明胶酶B的作用实际上是母体化合物1b的两倍(5g,IC50 = 0.27 microM与1b,IC50 = 0.57 microM)。其他衍生物,包括1)具有酯部分P'2和P'3的酯7a和7b,2)环状氨基酸,带有P'2的L-脯氨酸或L-哌啉酸(13a和13b),和3)化合物29a和29b代表戊基侧链在C3'(P' 1个侧链)代替C2',均显示效力降低。关键发现是观察到在P'1位置引入壬基会产生一种化合物(31f,IC50 = 0.0012 microM),具有对明胶酶的高抑制活性和相对于嗜热菌蛋白酶的高选择性。该结果表明明胶酶的S'1亚位点具有局部深的疏水