Process for preparing and isolating 9-deoxo-9 (Z)-hydroxyiminoerythromycin A
    2.
    发明授权
    Process for preparing and isolating 9-deoxo-9 (Z)-hydroxyiminoerythromycin A 有权
    9-脱氧-9(Z) - 羟基亚氨基红霉素A的制备和分离方法

    公开(公告)号:US06590084B2

    公开(公告)日:2003-07-08

    申请号:US09740671

    申请日:2001-04-23

    IPC分类号: C07H1708

    CPC分类号: C07H17/08

    摘要: The present invention relates to a process for preparing 9-deoxo-9(Z)-hydroxyiminoerythromycin A corresponding to formula (I) below: from 9-deoxo-9(E)-hydroxyiminoerythromycin A by reaction with a base in water or in a mixture of water/solvent of dialkyl ketone type capable of forming a crystallizable solvate with the desired 9(Z)-oxime; acidification of the reaction mixture to a pH of between 9 and 11; addition to the said mixture of an organic solvent; optionally concentration under vacuum of the resulting organic phase; and isolation of the desired 9(Z)-erythromycin oxime.

    摘要翻译: 本发明涉及一种相应于下式(I)制备9-脱氧-9(Z) - 羟基亚氨基红霉素A的方法:9-脱氧-9(E) - 羟基亚氨基红霉素A,通过与水或碱 能够与所需的9(Z) - 肟形成可结晶溶剂化物的水/二烷基酮类溶剂的混合物; 将反应混合物酸化至9至11的pH; 加入所述有机溶剂的混合物; 任选地在所得有机相的真空下浓缩; 并分离所需的9(Z) - 红霉素肟。