74-(5 methyl-2-oxo-1,3-dioxalen-4-yl)methyl 1-piperzinyl-4-oxo- 4H-1,3 thiazeto3,2-aquinoline-3-carboxylic acids

摘要

Quinolinecarboxylic acid derivatives of the formula (I) ##STR1## and pharmaceutically acceptable salts thereof, wherein R.sup.1 is hydrogen, straight or branch chain lower alkyl or phenyl unsubstituted or substituted by one or more halo moieties; R.sup.2 is hydrogen or straight or branch chain lower alkyl; and R.sup.3 is hydrogen, halo or straight or branch chain lower alkoxy, are useful for treating bacterial infections in humans and animals.