Asymmetric synthesis and properties of the enantiomers of the antibacterial agent 7-(3-aminopyrrolidin-1-yl)-1-(2,4-difluorophenyl)-1,4-dihydro-6-fluoro-4-oxo-1,8-naphthyridine-3-carboxylic acid hydrochloride
作者:Terry Rosen、Daniel T. W. Chu、Isabella M. Lico、Prabhavathi B. Fernandes、Linus Shen、Saul Borodkin、Andre G. Pernet
DOI:10.1021/jm00403a017
日期:1988.8
quinolonecarboxylic acid class of antibacterial agents and is currently undergoing clinical evaluation. We have developed efficient asymmetric syntheses of the enantiomers of this agent. The S-(+) enantiomer 1a is 1-2 log2 dilutions more active than the R-(-) enantiomer 1b against aerobic bacteria and 1-2 or more log2 dilutions more active against anaerobic bacteria in vitro. The enantiomer 1a shows
化合物1 [7-(3-氨基吡咯烷-1-基)-1-(2,4-二氟苯基)-1,4-二氢-6-氟咯-4-羰基-1,8-萘啶-3-羧酸盐酸]是喹诺酮羧酸类抗菌剂的有效成员,目前正在临床评估中。我们已经开发了该试剂的对映异构体的有效不对称合成。在体外,S-(+)对映异构体1a的抗氧性比R-(-)对映异构体1b的活性高1-2个log2稀释,对厌氧菌具有1-2个或更多log2稀释。对映异构体1a在铜绿假单胞菌小鼠保护模型中显示出比消旋体1更好的体内活性。再加上1a相对于消旋体材料的溶解度改善,从临床角度来看,这些特征可能具有实际意义。