The Pathogen Box

element-invisible
Catalysing neglected disease drug discovery

Identification, Characterization, and Optimization of 2,8-Disubstituted-1,5-naphthyridines as Novel Plasmodium falciparum Phosphatidylinositol-4-kinase Inhibitors with in Vivo Efficacy in a Humanized Mouse Model of Malaria

18 June 2018

Kandepedu N, Gonzàlez Cabrera D, Eedubilli S, Taylor D, Brunschwig C, Gibhard L, Njoroge M, Lawrence N, Paquet T, Eyermann CJ, Spangenberg T, Basarab GS, Street LJ, Chibale K

Journal of Medicinal Chemistry

doi: 10.1021/acs.jmedchem.8b00648

Abstract

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 × 50 mg·kg-1. In vitro mode-of-action studies revealed Plasmodium falciparum phosphatidylinositol-4-kinase as the target.

Read the full article on ACS Publications' website.