| 摘要 |
The present invention provides an antibacterial compound useful as medicines, animal drugs, fisheries drugs or antibacterial preservatives and to an antibacterial agent or preparation which contains the same, more particularly a compound which possesses high safety and excellent activity against a broad range of bacterial species including quinolone-resistant strains. A quinolone derivative of the following formula (I) which has a group derived from the heterocyclic spiro-compound at the 7-positioned R<2> and the halogenocyclopropyl group at the N1-position, prefereably a compound of pure isomer, and an antibacterial agent containing the derivative compound. <CHEM> |
