Wegner & Bretschneider
Benzoheterocyclic compounds
 Novel 4-oxoquinoline-3-carboxylic acid compounds of the formula: ##STR1## wherein R.sup.3 is C.sub.1 -C.sub.6 alkyl and R.sup.F is C.sub.1 -C.sub.6 alkyl, and a pharmaceutically acceptable salts thereof, said compounds having excellent antimicrobial activity and hence being useful as an antimicrobial agent, and a pharmaceutical composition containing said compound as an active ingredient. 
Otsuka Pharmaceutical Company, Limited
C C C C
C07D C07D C07D C07D
inventional inventional inventional inventional
Hiraki Tatsuya Shinji Hisashi
Ueda Otsuka Aki Miyamoto