PYRIDONE CARBOXYLIC ACID DERIVATIVES AND SALTS THEREOF,THEIR PRODUCTION AND ANTIBACTERIAL AGENTS COMPRISING THEM

摘要

This invention relates to a novel pyridone carboxylic acid derivative having a substituted or unsubstituted cyclopropyl group at the 10-position of pyridobenzoxazine, pyridobenzothiazine or pyridoquinoxaline and a salt thereof, a process for the production thereof and an antibacterial agent comprising the same.