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  • Title: Synthesis and antibacterial activities of optically active substituted 1,2-dihydro-6-oxo-6H-pyrrolo[3,2,1-ij]quinoline-5-carboxylic acids.
    Author: Tsuji K, Tsubouchi H, Ishikawa H.
    Journal: Chem Pharm Bull (Tokyo); 1995 Oct; 43(10):1678-82. PubMed ID: 8536340.
    Abstract:
    A series of optically active substituted 1,2-dihydro-6-oxo-pyrrolo[3,2,1-ij]quinoline-5-carboxylic acids was prepared via optically active 2-methyl-4,5-difluoroindoline (10) and tested for antibacterial activities. Among them, (2S)-9-[(3R,1'S)-3-(1'-amino)ethyl-1-pyrrolidinyl]-8-fluoro-1,2-dihydro- 2- methyl-6-oxo-6H-pyrrolo[3,2,1-ij]-quinoline-5-carboxylic acid (19) showed potent activity against gram-positive bacteria and (2S)-8-fluoro-1,2-dihydro-2-methyl-9-(3-methyl-1-piperazinyl)-6-oxo-6H- pyrrolo[3,2,1-ij]quinoline-5-carboxylic acid (16) exhibited well balanced in vitro activity, good intravenous efficacy, and high aqueous solubility.
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