Synthesis and biological activity of benzothiazolo[3,2-a]quinolone antibacterial agents
作者:Daniel T. W. Chu、Prabhavathi B. Fernandes、Andre G. Pernet
DOI:10.1021/jm00158a037
日期:1986.8
A new class of heterocyclic compounds with potent antibacterial activity, namely, 2-substituted amino-3-fluoro-5,12-dihydro-5-oxobenzothiazolo[3, 2-a]quinoline-6-carboxylic acids, is described. The compounds are conformationally restricted analogues of 7-substituted amino-6-fluoro-1-aryl-1, 4-dihydro-4-oxoquinoline-3-carboxylic acids. Compounds 7 and 10, having a 4-methylpiperazinyl and a piperazinyl
描述了一种新型的具有有效抗菌活性的杂环化合物,即2-取代的氨基-3-氟-5,12-二氢-5-氧代苯并噻唑并[3,2-a]喹啉-6-羧酸。该化合物是7-取代的氨基-6-氟-1-芳基-1,4-二氢-4-氧代喹啉-3-羧酸的构象受限的类似物。在2-位分别具有4-甲基哌嗪基和哌嗪基取代的化合物7和10具有与诺氟沙星相当的体外抗菌活性(15)。在2位上具有4-乙酰基哌嗪基取代基的化合物8对革兰氏阳性生物有活性,对革兰氏阴性生物几乎无活性。报道了通过分子内亲核取代环化反应有效且短时间合成这种新型杂环系统的方法。