Process for chiral synthesis of 1-bêta-methyl-carbapenem intermediates
    1.
    发明公开
    Process for chiral synthesis of 1-bêta-methyl-carbapenem intermediates 失效
    Verfahren zur chiralen Synthese von 1-beta-Methyl-carbapenem-Zwischenprodukten。

    公开(公告)号:EP0192171A1

    公开(公告)日:1986-08-27

    申请号:EP86101733.3

    申请日:1986-02-12

    申请人: Merck & Co., Inc.

    IPC分类号: C07D498/04 C07F7/18

    CPC分类号: C07F7/186 C07D205/08

    摘要: A process is described for selectively obtaining 1-β-methylcarbapenem intermediates. The desired chirality is obtained through the hydrogenation of certain bicyclic β-lactam ring structures containing an exocyclic methylene double bond alpha to the β-lactam ring, in the presence of a Group VIII metal hydrogenation catalyst. The hydrogenation results in a mixture of a- and β-methyl epimers having a high β/α epimeric ratio. New 1-β-methyfcarbapenem intermediates made by the process are also described.

    摘要翻译: 描述了选择性地获得1-β-甲基碳青霉烯中间体的方法。 在第VIII族金属加氢催化剂存在下,通过氢化含有β-内酰胺环的外环甲基二烯基α的某些双环β-内酰胺环结构,获得所需的手性。 氢化导致具有高β/α差向异构体比例的α-和β-甲基差向异构体的混合物。 还描述了通过该方法制备的新的1-β-甲基碳青霉烯中间体。