PROCESS FOR THE PREPARATION OF 6-O-METHYL ERYTHROMYCIN A USING 9-HYDROXY ERYTHROMYCIN DERIVATIVES
    1.
    发明公开
    PROCESS FOR THE PREPARATION OF 6-O-METHYL ERYTHROMYCIN A USING 9-HYDROXY ERYTHROMYCIN DERIVATIVES 有权
    用9-羟基红霉素衍生物制备6-O-甲基红霉素A的方法

    公开(公告)号:EP1044209A1

    公开(公告)日:2000-10-18

    申请号:EP98959481.7

    申请日:1998-11-17

    IPC分类号: C07H17/08

    CPC分类号: C07H17/08

    摘要: The claimed invention provides a novel method of preparing 6-O-methyl erythromycin A. The process comprises the steps of reducing the 9-keto group of erythromycin A to form a 9-hydroxy erythromycin A, protecting the 9-, 2'-, and/or 4'-hydroxyl groups of erythromycin A, selectively methylating the 6-position of the 9-hydroxy erythromycin A derivative, deprotecting the hydroxyl groups and oxidizing the 9-hydroxyl to afford 6-O-methyl erythromycin A.

    摘要翻译: 本发明提供了一种制备6-O-甲基红霉素A的新方法。该方法包括将红霉素A的9-酮基还原成9-羟基红霉素A,保护9-,2'-, 和/或红霉素A的4'-羟基,选择性甲基化9-羟基红霉素A衍生物的6-位,使羟基脱保护并氧化9-羟基,得到6-O-甲基红霉素A.