Pyridonecarboxylic Acids as Antibacterial Agents. VIII. Synthesis and Structure-Activity Relationship of 7-(1-Aminocyclopropyl)-4-oxo-1,8-naphthyridine-3-carboxylic Acids and 7-(1-Aminocyclopropyl)-4-oxoquinoline-3-carboxylic Acids

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4-Oxo-1,8-naphthyridine- and 4-oxoquinoline-3-carboxylic acids (2a, b and 3a-l) possessing a 1-amino-cyclopropyl group at the 7-position have been synthesized and evaluated for in vitro antibacterial activities. The three quinolones (3d, h, i) exhibited potent antibacterial activities against both gram-positive and gram-negative bacteria, which are comparable to those of ciprofloxacin (CPFX) and ofloxacin (OFLX). Among the three compounds, the best pharmacological and pharmacokinetic profile was obtained with 3i, an OFLX analogue, which was considerably less toxic than three reference quinolones (1,CPFX, and OFLX).
社団法人日本薬学会の論文
1994-10-15