Searching for Novel Inhibitors of the<i>S. aureus</i>NorA Efflux Pump: Synthesis and Biological Evaluation of the 3-Phenyl-1,4-benzothiazine Analogues
作者:Tommaso Felicetti、Rolando Cannalire、Maria Sole Burali、Serena Massari、Giuseppe Manfroni、Maria Letizia Barreca、Oriana Tabarrini、Bryan D. Schindler、Stefano Sabatini、Glenn W. Kaatz、Violetta Cecchetti
DOI:10.1002/cmdc.201700286
日期:2017.8.22
overexpression of efflux pumps such as NorA of Staphylococcus aureus leads to a sub-lethal concentration of the antibacterial agent at the active site that in turn may predispose the organism to the development of high-level target-based resistance. With an aim to improve both the chemical stability and potency of our previously reported 3-phenyl-1,4-benzothiazine NorA inhibitors, we replaced the benzothiazine
近年来,对抗菌剂的细菌耐药性已成为日益严重的健康问题。在可以实现抗药性的策略中,外排泵的过度表达(例如金黄色葡萄球菌的NorA)导致活性位点处的抗菌剂浓度达到亚致死浓度,进而可能使生物体易于形成高水平靶标抵抗。为了提高我们先前报道的3-苯基-1,4-苯并噻嗪NorA抑制剂的化学稳定性和效能,我们用不同的核取代了苯并噻嗪核心。新合成的化合物均未显示任何明显的固有抗菌活性,尤其是2-(3,4-二甲氧基苯基)喹啉(6 c)能够以浓度依赖性方式降低,