| 摘要 |
<p>Novel 5,8-dihydro-8-oxo-1, 3-dioxolo ¢4,5-g! quinoline7-carboxylic acids substituted in the 5-position by lower-alkyl-amino or di-lower-alkylamino, useful as antibacterial agents, are prepared from 8-hydroxy-1, 3-dioxolo¢4,5-g! quinoline-7-carboxylic acid or a lower-alkyl ester thereof via a series of novel intermediates.</p> |
