Pyridonecarboxylic Acids as Antibacterial Agents. VII. Synthesis and Structure-Activity Relationship of Amino- and Hydroxyl-Substituted 7-Cycloalkyl and 7-Vinyl Derivatives of l-Cyclopropyl-6-fluoro-4- quinolone-3-carboxylic Acid.
作者:Yozo TODO、Jun NITTA、Mikako MIYAJIMA、Yoshikazu FUKUOKA、Yasushi IKEDA、Yoshiko YAMASHIRO、Isamu SAIKAWA、Hirokazu NARITA
DOI:10.1248/cpb.42.2055
日期:——
Novel C(7)-derivatives of 1-cyclopropyl-6-fluoro-4-quinolone carboxylic acid (3a-o) have been synthesized and evaluated for in vitro antibacterial activity. Compounds 3e (3-aminocyclobutyl), 3g (1-aminocyclopropyl), 3m ((2-aminomethyl)vinyl), and 3o ((1-aminomethyl)vinyl) showed significant inhibitory activity, comparable to that of ciprofloxacin, against gram-negative bacteria including P. aeruginosa
1-环丙基-6-氟-4-喹诺酮羧酸(3a-o)的新型C(7)衍生物已合成和体外抗菌活性进行了评估。化合物3e(3-氨基环丁基),3g(1-氨基环丙基),3m((2-氨基甲基)乙烯基)和3o((1-氨基甲基)乙烯基)对革兰氏阴性菌显示出与环丙沙星相当的显着抑制活性细菌包括铜绿假单胞菌。对于两种环状化合物(3e和3g),均获得了良好的药代动力学特征(血清和脑部浓度以及尿液恢复),但乙烯基化合物(3m和3o)的药代动力学则较差。就急性毒性和惊厥诱导而言,化合物3g的毒性低于3e,环丙沙星或氧氟沙星。