Lowering of 5-nitroimidazole's mutagenicity: Towards optimal antiparasitic pharmacophore
                                
                                    
                                        作者:Maxime D. Crozet、Céline Botta、Monique Gasquet、Christophe Curti、Vincent Rémusat、Sébastien Hutter、Olivier Chapelle、Nadine Azas、Michel De Méo、Patrice Vanelle                                    
                                    
                                        DOI:10.1016/j.ejmech.2008.05.015
                                    
                                    
                                        日期:2009.2
                                    
                                    To improve the antiparasitic pharmacophore, 20 5-nitroimidazoles bearing an arylsulfonylmethyl group were prepared from commercial imidazoles. The antiparasitic activity of these molecules was assessed against Trichomonas vaginalis, the in vitro cytotoxicity was evaluated on human monocytes and the mutagenicity was determined by the Salmonella mutagenicity assay. All IC50 on T. vaginalis were below the one of metronidazole. The determination of the specificity indexes (SIs), defined as the ratios of the cytotoxic activity and the antitrichomonas activity, indicated that 11 derivatives had a SI over the one of metronidazole. Molecules, bearing an additional methyl group on the 2-position, showed a lower mutagenicity than metronidazole. Moreover, three derivatives were characterized by a low mutagenicity and an efficient antitrichomonas activity. (C) 2008 Elsevier Masson SAS. All rights reserved.