Identification, Characterization, and Optimization of 2,8-Disubstituted-1,5-naphthyridines as Novel <i>Plasmodium falciparum</i> Phosphatidylinositol-4-kinase Inhibitors with in Vivo Efficacy in a Humanized Mouse Model of Malaria
作者:Nishanth Kandepedu、Diego Gonzàlez Cabrera、Srinivas Eedubilli、Dale Taylor、Christel Brunschwig、Liezl Gibhard、Mathew Njoroge、Nina Lawrence、Tanya Paquet、Charles J. Eyermann、Thomas Spangenberg、Gregory S. Basarab、Leslie J. Street、Kelly Chibale
DOI:10.1021/acs.jmedchem.8b00648
日期:2018.7.12
A novel 2,8-disubstituted-1,5-naphthyridine hit compound stemming from the open access Medicines for Malaria Venture Pathogen Box formed a basis for a hit-to-lead medicinal chemistry program. Structure-activity relationship investigations resulted in compounds with potent antiplasmodial activity against both chloroquine sensitive (NF54) and multidrug resistant (K1) strains of the human malaria parasite Plasmodium falciparum. In the humanized P. falciparum mouse efficacy model, one of the frontrunner compounds showed in vivo efficacy at an oral dose of 4 X 50 mg.g(-1). In vitro mode-of-action studies revealed Plasmodium falciparum phosphatidylinositol-4-kinase as the target.