Streptomyces microorganism useful for the preparation of (R)-baclofen
from the racemic mixture
    2.
    发明授权
    Streptomyces microorganism useful for the preparation of (R)-baclofen from the racemic mixture 失效
    用于从外消旋混合物制备(R) - 巴氯芬的链霉菌微生物

    公开(公告)号:US5843765A

    公开(公告)日:1998-12-01

    申请号:US791952

    申请日:1997-01-31

    IPC分类号: C12P7/40 C12P41/00 C07C00/00

    摘要: The invention disclosed relates to the biological production of substantially isomerically pure (R)-baclofen and structurally related compounds, from the racemic mixture of (R)- and (S)-isomers thereof, and to the isolation of a Streptomyces microorganism from Nature which is capable of preferentially metabolizing one of the isomers while showing minimal metabolic activity on the other isomer. A fermentation or bioconversion process using this microorganism or the cell-free enzymes derived therefrom for the biological resolution of a racemic mixture of (R)- and (S)-baclofen and structurally related compounds is also disclosed.

    摘要翻译: 所公开的本发明涉及从(R) - 和(S) - 异构体的外消旋混合物和从Nature的Streptomyces微生物的分离中基本上异构纯的(R) - 巴氯芬和结构相关化合物的生物生产, 能够优先代谢一种异构体,同时对另一种异构体显示出最小的代谢活性。 还公开了使用该微生物或由其衍生的无细胞酶用于(R) - 和(S) - 巴氯芬和结构相关化合物的外消旋混合物的生物拆分的发酵或生物转化过程。

    Sugar/sugar alcohol esters
    3.
    发明授权
    Sugar/sugar alcohol esters 失效
    糖/糖醇酯

    公开(公告)号:US5635614A

    公开(公告)日:1997-06-03

    申请号:US489138

    申请日:1995-06-09

    摘要: The invention disclosed relates to a process for the preparation of sugar and sugar alcohol esters of general formula I(R--COO--).sub.n --R.sup.1 (I)wherein R is an alkyl group, R.sup.1 is derived from a sugar or a polyol moiety and n is 1 to 3, comprising reacting a sugar or a polyol with an acyl moiety, such as a carboxylic acid or ester, in a suitable solvent therefor and in the presence of an enzymatic catalyst capable of catalyzing the formation of ester bonds, and under reduced pressure sufficient to vaporize the solvent and by-product water, and continuously removing the water.

    摘要翻译: 本发明涉及制备通式Ⅰ(R-COO-)n -R1(Ⅰ)的糖和糖醇酯的方法,其中R为烷基,R 1衍生自糖或多元醇部分, n为1至3,包括使糖或多元醇与酰基部分如羧酸或酯在合适的溶剂中和在能够催化形成酯键的催化剂存在下反应,以及在 足以蒸发溶剂和副产物水的减压,并连续除去水。