Stereochemical Structure Activity Relationship Studies (S-SAR) of Tetrahydrolipstatin
作者:Xiaofan Liu、Yanping Wang、Richard I. Duclos、George A. O’Doherty
DOI:10.1021/acsmedchemlett.8b00050
日期:2018.3.8
Tetrahydrolipstatin (THL), its enantiomer, and an additional six diastereomers were evaluated as inhibitors of the hydrolysis of p-nitrophenyl butyrate by porcine pancreatic lipase. IC50s were found for all eight stereoisomers ranging from a low of 4.0 nM for THL to a high of 930 nM for the diastereomer with the inverted stereocenters at the 2,3,2′-positions. While the enantiomer of THL was also significantly
评价了四氢lipstatin(THL),其对映异构体和另外六种非对映异构体,它们是猪胰脂肪酶水解对硝基苯基丁酸酯的抑制剂。发现所有八种立体异构体的IC 50值范围从THL的低4.0 nM到非立体异构体的高930 nM的高,其立体中心位于2,3,2'-位置。尽管THL的对映异构体活性也显着降低(77 nM),其余5种立体异构体仍具有显着的抑制活性(IC 50s = 8.0至20 nM)。还对所有三种化合物针对三种人类癌细胞系(人类乳腺癌MCF-7和MDA-MB-231,人类大细胞肺癌H460)进行了评估。对于THL及其7个非对映异构体,未观察到明显的细胞毒性,因为它们在MTT细胞毒性试验中的IC 50均大于喜树碱的3个数量级。