| abstract |
This invention relates to certain novel pyrido[2,3- f ]quinoxaline-8-carboxylic acid derivatives, their isomeric pyrido[2,3- g ]quinoxaline-carboxylic acid derivatives, corresponding 4-oxo-1,4-dihydroquinoline-3-carboxylate derivatives of formulas (A) and (B) and physiologically tolerated salts and esters thereof, a process for their preparation and their potential use as antibacterial compounds. |