Isothiazoloquinolones containing functionalized aromatic hydrocarbons at the 7-position: Synthesis and in vitro activity of a series of potent antibacterial agents with diminished cytotoxicity in human cells
作者:Jason A. Wiles、Qiuping Wang、Edlaine Lucien、Akihiro Hashimoto、Yongsheng Song、Jijun Cheng、Christopher W. Marlor、Yangsi Ou、Steven D. Podos、Jane A. Thanassi、Christy L. Thoma、Milind Deshpande、Michael J. Pucci、Barton J. Bradbury
DOI:10.1016/j.bmcl.2005.11.065
日期:2006.3
This report describes 9H-isothiazolo[5,4-b]quinoline-3,4-diones (ITQs) containing aromatic groups at the 7-position that were prepared using palladium-catalyzed cross-coupling and tested against a panel of susceptible and resistant bacteria. In general, these compounds were more effective against Gram-positive than Gram-negative organisms. Many of the ITQs were more potent than contemporary quinolones and displayed a particularly strong antistaphylococcal activity against a clinically important, multidrug-resistant strain. In contrast with ITQs reported previously, several of the analogues described in this Letter demonstrated low cytotoxic activity against a human cell line. (C) 2005 Elsevier Ltd. All rights reserved.