new quinolone antimicrobial agents ( racemic , ( 1's,2 ' r ) - and ( 1 ' r,2 's ) -6-fluoro-7- ( 1-piperazinyl ) -1- ( 2'-trans-phenyl-1'-cyclopropyl ) - 1 , 4-dihydro-4-oxoquinoline-3-carboxylic acids ) were synthesized , and their in vitro antimicrobial potencies and spectra were determined .
C2917419
quinolone antimicrobial agents
C1136254
antimicrobial