Quinolizinone type compounds
 Antibacterial compounds having the formula ##STR1## and the pharmaceutically acceptable salts, esters and amides thereof, selected preferred examples of which include those compounds wherein PA1 A is.dbd.CR.sup.6 --; PA1 R.sup.1 is cycloalkyl of from three to eight carbon atoms or substituted phenyl; PA1 R.sup.2 is selected from the group consisting of ##STR2## R.sup.3 is halogen; R.sup.4 is hydrogen, loweralkyl, a pharmaceutically acceptable cation, or a prodrug ester group; PA1 R.sup.5 is hydrogen, loweralkyl, halo(loweralkyl), or --NR.sup.13 R.sup.14 ; and PA1 R.sup.6 is halogen, loweralkyl, halo(loweralkyl), hydroxy-substituted loweralkyl, loweralkoxy(loweralkyl), loweralkoxy, or amino(loweralkyl), as well as pharmaceutical compositions containing such compounds and the use of the same in the treatment of bacterial infections. 
Abbott Laboratories
C C C A C C
C07D C07D C07D A61K C07D C07K
inventional inventional inventional additional inventional inventional
Jacob J. Cheuk M. Zhenkun Curt S. Daniel T. Qun Anthony K. L. Wei-Bo
Plattner Lee Ma Cooper Chu Li Fung Wang