Nitroimidazole carboxamides as antiparasitic agents targeting Giardia lamblia, Entamoeba histolytica and Trichomonas vaginalis
作者:A.M. Jarrad、A. Debnath、Y. Miyamoto、K.A. Hansford、R. Pelingon、M.S. Butler、T. Bains、T. Karoli、M.A.T. Blaskovich、L. Eckmann、M.A. Cooper
DOI:10.1016/j.ejmech.2016.04.064
日期:2016.9
showed improved activity against E. histolytica (EC50 = 1.7-5.1 muM cf. metronidazole EC50 = 5.0 muM), potent activity against Trichomonas vaginalis (EC50 = 0.6-1.4 muM cf. metronidazole EC50 = 0.8 muM) and moderate activity against the intestinal bacterial pathogen Clostridium difficile (0.5-2 mug/mL, cf. metronidazole = 0.5 mug/mL). The new compounds had low toxicity against mammalian kidney and liver
由肠道寄生虫贾第鞭毛虫和溶组织性变形杆菌引起的腹泻疾病构成了主要的全球健康负担。硝基咪唑是治疗贾第鞭毛虫病和阿米巴病的一线药物,其中甲硝唑1是全球最常用的药物。但是,贾第鞭毛虫病的治疗失败率高达20%,因此人们对甲硝唑耐药性的发展值得关注。我们已经重新检查了“旧的”硝基咪唑,作为系统开发下一代衍生物的基础。使用这种方法,硝基咪唑羧酰胺支架的衍生化提供了改进的抗寄生虫剂。合成了33种新颖的硝基咪唑羧酰胺,并评估了其对兰伯氏菌和组织溶大肠杆菌的活性。几种新化合物对兰氏芽孢杆菌菌株表现出有效的活性,包括兰氏芽孢杆菌对甲硝唑的抗性菌株(EC50 = 0.1-2.5μM,而甲硝唑EC50 = 6.1-18μM)。其他化合物显示出对溶组织性大肠杆菌的增强活性(EC50 = 1.7-5.1μM,对甲硝唑EC50 = 5.0μM),对阴道毛滴虫的有效活性(EC50 = 0.6-1.4μM,对甲硝唑EC50