Intermediates for pyridonecarboxylic acid derivatives

Details Intermediates for pyridonecarboxylic acid derivatives Intermediates for pyridonecarboxylic acid derivatives

1994-03-04

1995-01-10

Dentz, Bernard

Organic compounds -- part of the class 532-570 series

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

548567, C07D20709

Patent

active

053808746

ABSTRACT:
This invention provides novel pyridonecarboxylic acid derivatives having a quite high antimicrobial activity. The derivatives have the following formula: ##STR1## wherein R.sup.1, R.sup.2 and R.sup.3 represent each a hydrogen or C.sub.1 -C.sub.6 alkyl group; R.sup.4 represents an ethyl, 2-fluoroethyl, vinyl, isopropyl, isopropenyl or cyclopropyl group; and X represents CH, C--F, C--Cl or N characterized in that R.sup.2 and R.sup.3 are not hydrogen at the same time.

REFERENCES:
patent: 4665079 (1987-05-01), Culbertson et al.

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