N,N′-disubstituted cinnamamide derivatives potentiate ciprofloxacin activity against overexpressing NorA efflux pump Staphylococcus aureus 1199B strains
作者:Sylvie Radix、Anne Doléans Jordheim、Luc Rocheblave、Serge N'Digo、Anne-Laure Prignon、Carine Commun、Serge Michalet、Marie-Geneviève Dijoux-Franca、Angélique Mularoni、Nadia Walchshofer
DOI:10.1016/j.ejmech.2018.03.028
日期:2018.4
A multi-step procedure has been described which afforded satisfactory yields of N,N′-disubstituted cinnamamides derived from N-Boc-protected amino acids (Boc-Gly, Boc-Val, Boc-Phe). The key step of this synthesis was a regioselective RedAl reduction of an amide function in presence of a carbamate group. Next, these cinnamamides were evaluated in co-admnistration with ciprofloxacin as efflux pump inhibitors
已经描述了多步程序,其提供了令人满意的得自N -Boc保护的氨基酸(Boc-Gly,Boc-Val,Boc-Phe)的N,N'-二取代的肉桂酰胺的产率。该合成的关键步骤是在氨基甲酸酯基团存在下,区域选择性的RedA1还原酰胺功能。接下来,将这些肉桂酰胺与环丙沙星作为两种泵的金黄色葡萄球菌菌株,即过表达SA1199B和野生型SA1199的金黄色葡萄球菌菌株的外排泵抑制剂共同评估。同时,它们对人肺成纤维细胞MRC5细胞的内在毒性得到了赞赏。因此,发现结合氨基甲酸酯基和吲哚-3-基基团的肉桂酰胺是最有效的,也是毒性较小的EPI之一,构成了有希望的产品。