Process for the enzymatic resolution of lactams
    8.
    发明授权
    Process for the enzymatic resolution of lactams 失效
    内切酶的酶解方法

    公开(公告)号:US06638758B2

    公开(公告)日:2003-10-28

    申请号:US09876199

    申请日:2001-06-06

    IPC分类号: C07C104

    摘要: A method of separating enantiomeric lactam esters. The lactam esters are contacted with a biocatalyst, such as an enzyme or a microorganism, in a solution wherein only one enantiomer is selectively hydrolyzed to give the optically active isomer of the corresponding acid. The hydrolysis product is then separated from the unreacted lactam esters. The enzyme is then recycled for reuse in the next enzymatic resolution. The undesired isomer is also racemized and reused in the next enzymatic resolution.

    摘要翻译: 分离对映体内酰胺酯的方法。 将内酰胺酯与生物催化剂如酶或微生物在溶液中接触,其中只有一个对映体被选择性水解,得到相应酸的旋光异构体。 然后将水解产物与未反应的内酰胺酯分离。 然后将酶再循环以在下一酶分解中重新使用。 不需要的异构体也是外消旋化的并且在下一个酶解决方案中重复使用。

    Process for the enzymatic resolution of lactams
    9.
    发明授权
    Process for the enzymatic resolution of lactams 失效
    内切酶的酶解方法

    公开(公告)号:US06277626B1

    公开(公告)日:2001-08-21

    申请号:US09250197

    申请日:1999-02-16

    IPC分类号: C07C104

    摘要: A method of separating enantiomeric lactam esters. The lactam esters are contacted with a biocatalyst, such as an enzyme or a microorganism, in a solution wherein only one enantiomer is selectively hydrolyzed to give the optically active isomer of the corresponding acid. The hydrolysis product is then separated from the unreacted lactam esters. The enzyme is then recycled for reuse in the next enzymatic resolution. The undesired isomer is also racemized and reused in the next enzymatic resolution.

    摘要翻译: 分离对映体内酰胺酯的方法。 将内酰胺酯与生物催化剂如酶或微生物在溶液中接触,其中只有一个对映体被选择性水解,得到相应酸的旋光异构体。 然后将水解产物与未反应的内酰胺酯分离。 然后将酶再循环以在下一酶分解中重新使用。 不需要的异构体也是外消旋化的并且在下一个酶解决方案中重复使用。