| 摘要 |
<p>Intermediate compounds for use in preparing 8-cyano-6,7-dihydro-5-methyl-1-oxo-1H,5H-benzo¢ij!quinolizine-2-carboxylic acids and salts, esters and amides thereof are disclosed. The so prepared compounds are useful as potent antimicrobial agents.</p> |
