Pyridonecarboxylic acid derivatives having...

Details Pyridonecarboxylic acid derivatives having... Pyridonecarboxylic acid derivatives having...

C - Chemistry, Metallurgy

07

D

167/225, 260/273

C07D 401/10 (2006.01) A61K 31/435 (2006.01) C07D 401/04 (2006.01) C07D 471/04 (2006.01)

Patent

CA 1301760

Abstract of the Disclosure This invention provides novel pyridonecarboxylic acid derivatives having a quite high antimicrobial activity. The derivatives have the following formula: Image [I] wherein R1, R2 and R3 represent each a hydrogen or C1 - C6 alkyl group; R4 represents an ethyl, 2-fluoroethyl, vinyl, isopropyl, isopropenyl or cyclopropyl group: and X represents CH, C-F, C-C1 or N characterized in that R2 and R3 are not hydrogen at the same time.

512446

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