Synthesis and Structure–Activity Relationships of Tambjamines and B-Ring Functionalized Prodiginines as Potent Antimalarials
作者:Papireddy Kancharla、Jane Xu Kelly、Kevin A. Reynolds
DOI:10.1021/acs.jmedchem.5b00560
日期:2015.9.24
Synthesis and antimalarial activity of 94 novel bipyrrole tambjamines (TAs) and a library of B-ring functionalized tripyrrole prodiginines (PGs) against a panel of Plasmodium falciparum strains are described. The activity and structure–activity relationships demonstrate that the ring-C of PGs can be replaced by an alkylamine, providing for TAs with retained/enhanced potency. Furthermore, ring-B of
描述了94种新型联吡咯他布明胺(TAs)的合成和抗疟活性以及针对一系列恶性疟原虫菌株的B环功能化三联吡咯酮(PGs)库。活性和结构-活性之间的关系表明,PGs的C环可以被烷基胺取代,从而为TAs提供保留/增强的效力。此外,PG / TA的B环可以在4位(取代OMe)或3位和4位上被短烷基取代而不影响效能。已评估了八个代表性TA和两个PG对耐多药疟原虫的抗疟活性口服给药的小鼠剂量范围为5-100 mg / kg×4天。KAR425 TA的功效比以前任何PG所观察到的都要大,在25天和50 mg / kg×4天的剂量下,直到28天之前,对感染疟疾的小鼠提供100%的保护,并且在该模型中也可以单次口服治疗(80毫克/公斤)。这项研究提出了tambjamines中抗疟活性的第一个解释。