[EN] SMALL MOLECULE NAPHTHOQUINONE- AND PHTHALIMIDE-BASED LIPOCATIONS AS ANTI-PARASITIC AGENTS [FR] LIPOCATIONS À BASE DE NAPHTOQUINONE ET DE PHTALIMIDE À PETITES MOLÉCULES EN TANT QU'AGENTS ANTI-PARASITAIRES
1,4-Naphthoquinone Cations as Antiplasmodial Agents: Hydroxy-, Acyloxy-, and Alkoxy-Substituted Analogues
摘要:
Cations of hydroxy-substituted 1,4-naphthoquinones were synthesized and evaluated as antiplasmodial agents against Plasmodium falciparum. The atovaquone analogues were found to be inactive as antagonists of parasite growth, which was attributed to ionization of the acidic hydroxyl moiety. Upon modification to an alkoxy substituent, the antiplasmodial activity was restored in the sub-100 nM range. Optimal inhibitors were found to possess IC50 values of 17.4 49.5 nM against heteroresistant P. falciparum W2.