Several β-carbolines including naturally occurring substances and their corresponding cationic derivatives were synthesized and evaluated for antimalarial (antiplasmodial) activity in vitro and in vivo. A tetracyclic carbolinium salt was elucidated for antileishmanial and antitrypanosomal activities in vitro as well as antiplasmodial activity. Quarternary carbolinium cations showed much higher potencies in vitro than electronically neutral β-carbolines and a good correlation was observed between π-delocalized lipophilic cationic (DLC) structure and antimalarial efficacy. β-Carbolinium compounds exhibit medium suppressive activity in vivo against rodent malaria.
合成了几种β-卡巴啉,包含
天然存在的物质及其相应的阳离子衍
生物,并评估了它们的抗疟疾(抗红血球变形虫)活性,包括体外和体内实验。一个四环卡巴啉盐被阐明具有体外抗利什曼病和抗锥虫病活性,以及抗疟疾活性。季
铵卡巴啉阳离子在体外表现出比电子中性β-卡巴啉显著更高的效力,并且观察到了π-去局域化的脂溶性阳离子(DLC)结构与抗疟疾效力之间的良好相关性。β-卡巴啉化合物在体内对啮齿动物疟疾表现出中等的抑制活性。