| 摘要 |
Antibacterially effective 1,7-diamino-1,4-dihydro-4-oxo-3-(aza)quinolinecarboxylic acids of the formula <IMAGE> in which A is nitrogen or C-R1, R1 is nitro or halogen, R2 and R3 each independently is C1-C3-alkyl, or together with the nitrogen atom to which they are bonded, form a 5-membered or 6-membered heterocyclic ring, which can additionally contain the atoms or groups -O-, -S-, -SO-, -SO2- or =N-R4 as a ring member and can optionally be mono-, di- or tri-substituted on the carbon atoms by C1-C3-alkyl, hydroxyl, alkoxy with 1-3 carbon atoms, amino, methylamino or ethylamino, R4 is hydrogen, an alkyl or alkenyl group which has 1 to 4 carbon atoms and is optionally substituted by a hydroxyl, alkoxy, alkylmercapto, alkylamino or dialkylamino group with 1 to 3 carbon atoms per alkyl radical, the cyano group or an alkoxycarbonyl group with 1 to 4 carbon atoms in the alcohol part, or a benzyloxycarbonyl group, a phenylalkyl group which has up to 4 carbon atoms in the aliphatic part and is optionally substituted in the phenyl radical, a phenyl radical which is optionally monosubstituted or disubstituted by hydroxyl, methoxy, chlorine ad fluorine, a phenylacyl radical which is optionally monosubstituted or disubstituted by hydroxyl, methoxy, chlorine or fluorine, an oxoalkyl radical with up to 6 carbon atoms or a cycloalkyl-alkyl radical which has up to 6 carbon atoms in the cyclic part and up to 3 carbon atoms in the acyclic part, R5 and R6 each independently is hydrogen or an alkyl group with 1 to 4 carbon atoms, and X is hydrogen, a nitro group or halogen, or pharmaceutically acceptable salts thereof.
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