| 摘要 |
<p>As new compounds are now provided 5-deoxy-5-fluorokanamycin B, 5,3'-dideoxy-5-fluorokanamycin B, 5,4'-dideoxy-5-fluorokanamycin B and 5,3',4'-trideoxy-5-fluorokanamycin B as well as 1-N-(3-amino-2-hydroxypropionyl)- or 1-N-(4-amino-2-hydroxybutyryl)-derivatives thereof which are all useful as antibacterial agents and exhibit improved antibacterial activities. These new compounds may be produced by synthetic processes starting from an appropriately N,O-protected 5-epi-kanamycin B, 3'-deoxy-5-epi-kanamycin B, 4'-deoxy-5-epi-kanamycin B or 3',4'-dideoxy-5-epi-kanamycin B derivative which is now prepared by a combination of reaction steps.</p> |
