Poststatin, a New Inhibitor of Prolyl Endopeptidase. VII. N-Cycloalkylamide Analogues.
作者:MAKOTO TSUDA、YASUHIKO MURAOKA、MACHIKO NAGAI、TAKAAKI AOYAGI、TOMIO TAKEUCHI
DOI:10.7164/antibiotics.49.909
日期:——
Poststatin analogues containing (S)-2-oxo-2-(2-pyrrolidinyl)acetyl moiety in P1 were synthesized and examined for their inhibitory activity against prolyl endopeptidase and cathepsin B in vitro. Introduction of non-peptidyl cycloalkylamine component in P'1 was effective and P3-acyl groups must be widely modifiable for prolyl endopeptidase inhibition. Acyl-L-phenylalanyl-(S)-2-oxo-2-(2-pyrrolidinyl)acetyl-cycloalkylamide type compounds showed IC50 value of nano to subnano g/ml as prolyl endopeptidase inhibitor and were shown no significant inhibitory activities against cathepsin B, a cysteine protease.
含有(S)-2-氧代-2-(2-吡咯烷基)乙酰基的泊斯塔汀类似物在P1位点被合成,并对其体外抑制脯氨酰内肽酶和组织蛋白酶B的活性进行了研究。在P'1引入非肽型环烷基胺组分是有效的,且P3-酰基部分必须广泛可修饰以达到对脯氨酰内肽酶的抑制。酰基-L-苯丙氨酰-(S)-2-氧代-2-(2-吡咯烷基)乙酰基-环烷基酰胺类化合物显示出纳摩尔至亚纳摩尔克/毫升的IC50值作为脯氨酰内肽酶抑制剂,并且对组织蛋白酶B,一种半胱氨酸蛋白酶,表现出无显著抑制活性。