New oxirane derivatives of 1,4-naphthoquinones and their evaluation against T. cruzi epimastigote forms
摘要:
New oxirane derivatives were synthesized using six naphthoquinones as the starting materials. Our biological results showed that these oxiranes acted as trypanocidal agents against Trypanosoma cruzi with minimal cytotoxicity in the VERO cell line compared to naphthoquinones. In particular, oxirane derivative 14 showed low cytotoxicity in a mammalian cell line and exhibited better activity against epimastigote forms of T. cruzi than the current drug used to treat Chagas disease, benznidazole. (C) 2012 Elsevier Ltd. All rights reserved.
New oxirane derivatives of 1,4-naphthoquinones and their evaluation against T. cruzi epimastigote forms
作者:Paula F. Carneiro、Samara B. do Nascimento、Antonio V. Pinto、Maria do Carmo F.R. Pinto、Guilherme C. Lechuga、Dilvani O. Santos、Helvécio M. dos Santos Júnior、Jackson A.L.C. Resende、Saulo C. Bourguignon、Vitor F. Ferreira
DOI:10.1016/j.bmc.2012.06.027
日期:2012.8
New oxirane derivatives were synthesized using six naphthoquinones as the starting materials. Our biological results showed that these oxiranes acted as trypanocidal agents against Trypanosoma cruzi with minimal cytotoxicity in the VERO cell line compared to naphthoquinones. In particular, oxirane derivative 14 showed low cytotoxicity in a mammalian cell line and exhibited better activity against epimastigote forms of T. cruzi than the current drug used to treat Chagas disease, benznidazole. (C) 2012 Elsevier Ltd. All rights reserved.
Synthesis and antimalarial activity of quinones and structurally-related oxirane derivatives
作者:Paula F. Carneiro、Maria C.R.F. Pinto、Roberta K.F. Marra、Fernando de C. da Silva、Jackson A.L.C. Resende、Luiz F. Rocha e Silva、Hilkem G. Alves、Gleyce S. Barbosa、Marne C. de Vasconcellos、Emerson S. Lima、Adrian M. Pohlit、Vitor F. Ferreira
DOI:10.1016/j.ejmech.2015.11.020
日期:2016.1
A series of eighteen quinones and structurally-related oxiranes were synthesized and evaluated for in vitro inhibitory activity against the chloroquine-sensitive 3D7 clone of the human malaria parasite Plasmodium falciparum. 2-amino and 2-allyloxynaphthoquinones exhibited important antiplasmodial activity (median inhibitory concentrations (IC50) < 10 mu M). Oxiranes 6 and 25, prepared respectively by reaction of alpha-lapachone and tetrachloro-p-quinone with diazomethane in a mixture of ether and ethanol, exhibited the highest antiplasmodial activity and low cytotoxicity against human fibroblasts (MCR-5 cell line). The active compounds could represent a good prototype for an antimalarial lead molecule. (C) 2015 Published by Elsevier Masson SAS.