Optically active 4-carbalkoxy-2-azetidinones
    1.
    发明授权
    Optically active 4-carbalkoxy-2-azetidinones 失效
    光学活性的4-烷氧基-2-氮杂环丁酮

    公开(公告)号:US4716226A

    公开(公告)日:1987-12-29

    申请号:US791774

    申请日:1985-10-28

    CPC分类号: C07D205/085 Y02P20/55

    摘要: Novel 2-azetidinones of the formula ##STR1## wherein R is alkyl of 1 to 4 carbon atoms, R.sub.1 is selected from the group consisting of hydrogen, --OH, protected hydroxy and --OCH.sub.2 --COOR', R' is selected from the group consisting of hydrogen and alkyl of 1 to 4 carbon atoms and R.sub.2 is selected from the group consisting of alkyl of 1 to 4 carbon atoms and hydroxyl protective group and a novel process and novel intermediates for their preparation and a process for the preparation of compounds of the formula ##STR2## wherein R has the above definition, R'd is selected from the group consisting of hydrogen, --OH and protected hydroxyl and R.sub.3 is selected from the group consisting of hydrogen and R.sub.3 ', R.sub.3 ' is amino protective group which are useful intermediates.

    摘要翻译: 式(Ⅰ)的新型2-氮杂环丁酮其中R为1至4个碳原子的烷基,R 1选自氢,-OH,保护的羟基和-OCH 2 -COOR',R'选自 由氢和1至4个碳原子的烷基组成的基团,R2选自1至4个碳原子的烷基和羟基保护基,以及一种新的制备方法和新的中间体以及制备化合物的方法 其中R具有上述定义,R d选自氢,-OH和被保护的羟基,R 3选自氢和R 3',R 3'是氨基保护基 组是有用的中间体。