Studies on Pyrionecarboxylic Acids. IV. Synthesis and Antibacterial Activity Evaluation of S-(-)- and R-(+)-6-Fluoro-1-methyl-4-oxo-7-(1-piperazinyl)-4H-(1,3)thiazeto(3,2-a)quinoline-3-carboxylic Acids.
作者:Jun SEGAWA、Kenji KAZUNO、Masato MATSUOKA、Isao AMIMOTO、Masakuni OZAKI、Masato MATSUDA、Yoshifumi TOMII、Masahiko KITANO、Masahiro KISE
DOI:10.1248/cpb.43.1238
日期:——
thiazeto [3,2-alpha] quinoline-3- carboxylic acid (NM394, 3) were prepared through optical resolution of their racemic intermediate ( +/- )-1 by high-performance liquid chromatography (HPLC). The absolute configuration at the C-1 position in the thiazeto-quinolone ring of ( - )-3 was confirmed by X-ray analysis ( - )-4 to be S. The in vitro antibacterial activity of ( - )-3 was 2--8 times that of (+)-3
6-氟-1-甲基-4-氧代-7-(1-哌嗪基)-4H- [1,3]噻嗪并[3,2-α]喹啉-3-羧酸的旋光异构体(NM394,3)通过高效液相色谱(HPLC)对其外消旋中间体(+/-)-1进行光学拆分,制备了这些化合物。X射线分析(-)-4证实(-)-3的噻嗪-喹诺酮环中C-1位置的绝对构型为S。(-)-3的体外抗菌活性为2是(+)-3的-8倍。