Synthesis and antibacterial activity of a new series of tetracyclic pyridone carboxylic acids
作者:Yoshikazu Jinbo、Hirosato Kondo、Yoshimasa Inoue、Masahiro Taguchi、Hideki Tsujishita、Yasuo Kotera、Fumio Sakamoto、Goro Tsukamoto
DOI:10.1021/jm00070a005
日期:1993.9
A series of novel tetracyclic pyridone carboxylic acids replacing the 10-position oxygen atom of 9,1-(epoxymethano)-7-fluoro-8-(4-methyl-1-piperazinyl)-5-oxo-5H-thiazolo [3,2-alpha]quinoline-4-carboxylic acid by imino groups (NR; R = Me, Et, c-Pr, allyl, Ph, benzyl), a sulfur atom, or a carbonyl group was prepared and evaluated for antibacterial activity and inhibitory activity on DNA gyrase isolated
一系列新颖的四环吡啶酮羧酸取代了9,1-(环氧甲氧基)-7-氟-8-(4-甲基-1-哌嗪基)-5-氧代-5H-噻唑的10位氧原子[3,制备亚氨基(NR; R = Me,Et,c-Pr,烯丙基,Ph,苄基),硫原子或羰基的2-α喹啉-4-羧酸,并评价其抗菌活性和抑制性分离自大肠杆菌KL-16的DNA促旋酶的活性。发现其体外抗菌能力和DNA促旋酶抑制活性的顺序如下:NMe>或= O> S >> C =O。而且,对于10位氮原子,甲基是最佳的烷基取代基抗菌活性和对DNA促旋酶的抑制活性。7-氟-9,1-[[(N-甲基亚氨基)甲醇] -8-(4-甲基-1-哌嗪基)-5-氧代-5H-噻唑啉[3,