5-Deoxy-5-fluorokanamycin B derivatives and processes for the production thereof
    31.
    发明公开
    5-Deoxy-5-fluorokanamycin B derivatives and processes for the production thereof 失效
    5-Deoxy-5-fluorokanamycin-B-Derivate und Verfahren zu ihrer Herstellung。

    公开(公告)号:EP0259014A2

    公开(公告)日:1988-03-09

    申请号:EP87306904.1

    申请日:1987-08-04

    IPC分类号: C07H15/236 A61K31/70

    CPC分类号: C07H15/234 Y02P20/55

    摘要: 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-hydrox- ypropionyl)-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.

    摘要翻译: 由于新化合物现在提供5-脱氧-5-氟乙酰霉素B,5,3'-二脱氧-5-氟沙卡他霉素B,5,4'-二脱氧-5-氟沙卡他霉素B和5,3',4'-三脱氧-5 - 氟卡那霉素B以及1-N-(3-氨基-2-羟基丙酰基) - 或1-N-(4-氨基-2-羟基丁酰基)衍生物,它们都可用作抗菌剂并表现出改善的抗菌活性。 这些新化合物可以通过合适的方法从合适的N,O-保护的5-表卡那霉素B,3'-脱氧-5-表卡那霉素B,4'-脱氧-5-表卡那霉素B或3 ',4'-双脱氧-5-表卡那霉素B衍生物,其现在通过反应步骤的组合制备。

    N-methanesulfonic acid derivatives of 3-demethoxy-istamycin B and production thereof
    36.
    发明公开
    N-methanesulfonic acid derivatives of 3-demethoxy-istamycin B and production thereof 失效
    N-Methansulfonsäure-Derivate von 3-Demethoxyistamycin-B und ihre Herstellung。

    公开(公告)号:EP0130862A1

    公开(公告)日:1985-01-09

    申请号:EP84401075.1

    申请日:1984-05-24

    IPC分类号: C07H15/22 A61K31/70

    CPC分类号: C07H15/224

    摘要: As new semi-synthetic antibiotic derivatives are provided N-methanesulfonic acid derivatives of 3-demethoxyistamycin B which are less toxic than the parent 3-demethoxyistamycin B but retain usefully high antibacterial activity of the parent antibiotic. The new derivatives are produced by a method of N-sulfomethylation where 3-demethoxyistamycin B is reacted with an aldehyde such as paraformaldehyde and sulfurous acid or sulfite reagent.

    摘要翻译: 由于新的半合成抗生素衍生物提供3-脱甲氧基霉素B的N-甲磺酸衍生物,它们比亲本3-脱甲氧基霉素B毒性小,但保留有效的高抗菌活性。 新衍生物通过N-甲基磺酰化方法制备,其中3-脱甲氧基霉素B与醛如多聚甲醛和亚硫酸或亚硫酸盐试剂反应。