Separation of mixture of diastereo-isomers of zearalanol
    2.
    发明授权
    Separation of mixture of diastereo-isomers of zearalanol 失效
    ZEARALANOL的异构体异构体混合物的分离

    公开(公告)号:US3574235A

    公开(公告)日:1971-04-06

    申请号:US3574235D

    申请日:1967-06-06

    Inventor: YOUNG VERNON V

    CPC classification number: C07D313/00

    Abstract: A MIXTURE OF DIASTEREOISOMERS IS FORMED WHEN ZEARALENONE IS CATALYTICALLY REDUCED TO ZEARALANOL IN THE PRESENCE OF HYDROGEN. A PORTION OF THE HIGH MELTING DIASTEREOISOMER CAN BE SEPARATED OUT BY KNOWN MEANS. THE REMAINING MIXTURE CAN BE SEPARATED INTO ITS CONSTITUENTS BY DISSOLVING THE MIXTURE IS WARM GLACAIL ACETIC ACID, COOLING THE SOLUTION, AND THEN DILUTING THE SOLUTION WITH WATER. THE LOW MELTING ISOMER (155*-157*C.) CRYSTALLIZES OUT WHEN THE SOLUTION IS COOLED AND THE HIGH MELTING ISOMER (180*-181*C.) CRYSTALLIZES OUT WHEN THE SOLUTION IS SUBSEQUENTLY DILUTED.

Patent Agency Ranking