Synthesis of Omeprazole Analogues and Evaluation of These as Potential Inhibitors of the Multidrug Efflux Pump NorA of
<i>Staphylococcus aureus</i>
作者:Céline Vidaillac、Jean Guillon、Corinne Arpin、Isabelle Forfar-Bares、Boubakar B. Ba、Jean Grellet、Stéphane Moreau、Daniel-Henri Caignard、Christian Jarry、Claudine Quentin
DOI:10.1128/aac.01306-05
日期:2007.3
A series of 11 pyrrolo[1,2-a]quinoxaline derivatives, 1a to 1k, sharing structural analogies with omeprazole, a eukaryotic efflux pump inhibitor (EPI) used as an antiulcer agent, was synthesized. Their inhibitory effect was evaluated using Staphylococcus aureus strain SA-1199B overexpressing NorA. By determinations of the MIC of norfloxacin in the presence of these EPIs devoid of intrinsic antibacterial
合成了11种吡咯并[1,2-a]喹喔啉衍生物,它们与奥美拉唑具有相似的结构相似性,奥美拉唑是一种用作抗溃疡药的真核外排泵抑制剂(EPI),共1a至1k。使用过表达NorA的金黄色葡萄球菌SA-1199B菌株评估了它们的抑制作用。通过在没有固有抗菌活性并以128微克/毫升使用的这些EPI的存在下测定诺氟沙星的MIC,并通过棋盘法测定化合物1e(MIC降低16倍;抑制浓度指数[SigmaFIC], 0.18)的活性似乎比化合物1b至1d,利血平和奥美拉唑(MIC降低,八倍; SigmaFIC,0.31)更高,其次是化合物1a和1f(MIC降低,四倍; SigmaFIC,0.37)和1g至1k(MIC下降两倍; SigmaFIC,0.50至0.56)。通过结合诺氟沙星(1/4 MIC)和最有效的EPI(128微克/毫升)的时间杀灭曲线,化合物1e持续恢复了诺氟沙星的杀菌活性(菌落减少,在8和24时减少3