Astemizole analogues with reduced hERG inhibition as potent antimalarial compounds
摘要:
Astemizole is a H-1-antagonist endowed with antimalarial activity, but has hERG liabilities. Systematic structural modifications of astemizole led to the discovery of analogues that display very potent activity as inhibitors of the growth of the Plasmodium parasite, but show a decreased hERG inhibition, when compared to astemizole. These compounds can be used as starting point for the development of a new class of antimalarials. (C) 2017 Elsevier Ltd. All rights reserved.
Multistage Antiplasmodium Activity of Astemizole Analogues and Inhibition of Hemozoin Formation as a Contributor to Their Mode of Action
作者:Malkeet Kumar、John Okombo、Dickson Mambwe、Dale Taylor、Nina Lawrence、Janette Reader、Mariëtte van der Watt、Diana Fontinha、Margarida Sanches-Vaz、Belinda C. Bezuidenhout、Sonja B. Lauterbach、Dale Liebenberg、Lyn-Marie Birkholtz、Theresa L. Coetzer、Miguel Prudêncio、Timothy J. Egan、Sergio Wittlin、Kelly Chibale
DOI:10.1021/acsinfecdis.8b00272
日期:2019.2.8
analogues against gametocytes revealed their moderate activity (IC50: 1-5 μM) against late stage P. falciparum gametocytes, while the evaluation of activity against P. berghei liver stages identified one compound (3) with 3-fold greater activity than the parent AST compound. Mechanistic studies showed a strong correlation between in vitroinhibition of β-hematin formation by the AST derivatives and their