Process for the manufacture of benzopyran derivatives
    1.
    发明公开
    Process for the manufacture of benzopyran derivatives 失效
    Verfahren zur Herstellung von Benzopyran-Derivaten。

    公开(公告)号:EP0355617A1

    公开(公告)日:1990-02-28

    申请号:EP89114880.1

    申请日:1989-08-11

    IPC分类号: C07D311/74

    CPC分类号: C07D311/66 C07D311/58

    摘要: The invention is directed to a process and intermediates for the preparation of benzopyrans such as racemic-6-acetyl-­7-[5-(4-acetyl-3-hydroxy-2-propylphenoxy)pentyloxy]-3,4-­dihydro-2H-1-benzopyran-2-carboxylic acid.

    摘要翻译: 本发明涉及制备苯并吡喃的方法和中间体,例如外消旋-6-乙酰基-7- [5-(4-乙酰基-3-羟基-2-丙基苯氧基)戊氧基] -3,4-二氢-2H -1-苯并吡喃-2-羧酸。