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Studies on pyridonecarboxylic acids . 2. Synthesis and antibacterial activity of 8-substituted-7-fluoro-5-oxo-5H-thiazolo[3,2-a]quinoline-4-carboxylic acids
Authors:Jun Segawa  Masahiko Kitano  Kenji Kazuno  Masami Tsuda  Ichiro Shirahase  Masakuni Ozaki  Masato Matsuda  Masahiro Kise
Abstract:A series of 8-substituted-7-fluoro-5-oxo-5H-thiazolo[3,2-a]quinoline-4-carboxylic acids was prepared and evaluated for antibacterial activity. These compounds were synthesized from ethyl 2-mercaptoquinoline-3-carboxylates 17 which were obtained from anilines 11 by a route involving an intramolecular cyclization reaction.
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