This invention discloses novel quinolonecarboxylic acid derivatives, pharmaceutically acceptable salts or hydrates thereof, and their preparation methods and medical uses. The compounds in this invention show potent antibacterial activity against broad-spectrum pathogenic bacteria, with favorable pharmacokinetics and very low toxicity. The quinolinecarboxylic acid derivatives, which possess a hydrogen atom or an amino group at C-5 position, cis-substituted optical or racemic 2,8-diazo-dicyclo[4,3,0]nonanyl at C-7 position, and difluoromethoxyl at C-8 position of quinolone core, have superior activity against gram-positive bacteria and broad spectrum antibacterial activity compared with the known quinolones.
本发明揭示了新的喹诺
酮羧酸衍
生物,其药学上可接受的盐或
水合物,以及它们的制备方法和医药用途。本发明中的化合物对广谱致病菌表现出强大的抗菌活性,具有良好的药物动力学和极低的毒性。喹诺
酮羧酸衍
生物在
喹诺酮核心的C-5位置具有氢原子或
氨基,C-7位置具有顺式取代或外消旋2,8-
二氮杂二环[4,3,0]壬基,C-8位置具有二
氟甲氧基,与已知的
喹诺酮相比,对革兰氏阳性菌和广谱抗菌活性具有优越的活性。