Preparation and Antimicrobial Assessment of 2-Thioether-linked Quinolonyl-carbapenems.
作者:PAUL M. HERSHBERGER、A. GREG SWITZER、KENNETH E. YELM、MILT C. COLEMAN、CAROL A. DEVRIES、F. JAMES ROURKE、BARB W. DAVIS、WILLIAM G. KRAFT、TRACY L. TWINEM、PAULA M. KOENIGS、SUZANNE M. PAULE、RICHARD J. SIEHNEL、PAUL H. ZOUTENDAM、REBECCA IMBUS、THOMAS P. Jr. DEMUTH
DOI:10.7164/antibiotics.51.857
日期:——
This reports the synthesis and in vitro antimicrobial properties of a series of 2-thioether-linked quinolonyl-carbapenems. Although the title compounds exhibited broad spectrum activity, the MICs were generally higher than those observed for selected benchmark carbapenems, quinolonyl-penems, and quinolones. Enzyme assays suggested that the title compounds are potent inhibitors of penicillin binding proteins and inefficient inhibitors of bacterial DNA-gyrase. Uptake studies indicated that the new compounds are not substrates for the norA encoded quinolone efflux pump.
本报告介绍了系列2-硫醚连接的喹诺酮-碳青霉烯的合成及其体外抗菌活性。尽管标题化合物显示出广谱活性,但其最低抑菌浓度(MICs)通常高于所选的基准碳青霉烯、喹诺酮-青霉烯及喹诺酮。酶试验表明,标题化合物是青霉素结合蛋白的强效抑制剂,但对细菌DNA旋转酶的抑制效果不佳。吸收研究显示,新化合物并非norA编码的喹诺酮外排泵的底物。