Method for manufacturing stereoselective preparation of 4-bma using a chiral auxiliary and chiral auxiliary
    1.
    发明公开
    Method for manufacturing stereoselective preparation of 4-bma using a chiral auxiliary and chiral auxiliary 审中-公开
    一种用于使用手性辅助和手性助剂制备4-BMA的立体选择性制备方法

    公开(公告)号:EP2345645A1

    公开(公告)日:2011-07-20

    申请号:EP09180507.7

    申请日:2009-12-22

    IPC分类号: C07D263/20 C07D413/06

    CPC分类号: C07D413/06 C07D263/20

    摘要: The present invention relates to a process for preparing (3R,4S)-3- [[[R]-1 ' -t-butyldimethylsilyloxy ]ethyl]-4-[(R)-1 "-carboxyethyl]-2-azetidinone (beta- methylazetidin-2-one; 4-BMA), a key intermediate for the synthesis of carbapenem and penem antibiotics. Specifically, the present invention relates to a process comprising first, the preparation of a chiral auxiliary from cheap L-Phenylalaninol, and then the preparation of 4-BMA in high yield and high selectivity, under industrially mild condition.

    摘要翻译: 本发明涉及一种用于制备(3R,4S)-3 - [[[R] -1 - 叔丁基二甲硅氧基]乙基] -4 - [(R)-1“羧乙基] -2-氮杂环丁酮( 的β-甲基氮杂环丁烷-2-酮,4-BMA),对碳青霉烯类和青霉烯抗生素的合成中的关键中间体具体地,本发明涉及包括第一过程,从廉价的L-苯丙手性助剂,和制备。 然后4-BMA的以高产率和高选择性制备方法,在工业上温和条件下。