Method for the chemo-selective enzymatic hydrolysis if a diester compound for preparing a monoester monoacid compound
    15.
    发明授权
    Method for the chemo-selective enzymatic hydrolysis if a diester compound for preparing a monoester monoacid compound 有权
    用于制备单酯一酸化合物的二酯化合物的化学选择性酶水解的方法

    公开(公告)号:US08198054B2

    公开(公告)日:2012-06-12

    申请号:US12523602

    申请日:2008-01-22

    IPC分类号: C12P7/40

    CPC分类号: C12P7/62

    摘要: This disclosure relates to the synthesis of the compound of formula (I) according to Scheme A below: in which R1, R2 and R3, which may be identical or different, represent, individually and independently, an alkyl group, characterized by an enzymatic hydrolysis reaction that involves placing the compound of formula (II) in contact with an enzyme that performs a chemoselective hydrolysis of only one of the two ester functions of the compound of formula (II) to obtain the compound of formula (I).

    摘要翻译: 本公开涉及根据下文方案A的式(I)化合物的合成:其中可以相同或不同的R 1,R 2和R 3各自独立地表示烷基,其特征在于酶水解 涉及将式(II)的化合物与仅进行式(II)化合物的两种酯官能团的化学选择性水解的酶接触以获得式(I)的化合物的反应。

    METHOD FOR THE CHEMO-SELECTIVE ENZYMATIC HYDROLYSIS IF A DIESTER COMPOUND FOR PREPARING A MONOESTER MONOACID COMPOUND
    16.
    发明申请
    METHOD FOR THE CHEMO-SELECTIVE ENZYMATIC HYDROLYSIS IF A DIESTER COMPOUND FOR PREPARING A MONOESTER MONOACID COMPOUND 有权
    如果用于制备单体单体化合物的DIESTER化合物的选择性酶水解的方法

    公开(公告)号:US20100068770A1

    公开(公告)日:2010-03-18

    申请号:US12523602

    申请日:2008-01-22

    IPC分类号: C12P17/12 C12P7/62

    CPC分类号: C12P7/62

    摘要: The invention relates to a synthesis process.This process relates to the synthesis of the compound of formula (I) according to Scheme A below: in which R1, R2 and R3, which may be identical or different, represent, individually and independently, an alkyl group, characterized by an enzymatic hydrolysis reaction that involves placing the compound of formula (II) in contact with an enzyme that performs a chemoselective hydrolysis of only one of the two ester functions of the compound of formula (II) to obtain the compound of formula (I).The invention allows the industrial preparation of the intermediate of formula (I), which may be used for the preparation of the pharmaceutical active principle repaglinide.

    摘要翻译: 本发明涉及一种合成方法。 该方法涉及根据下文方案A的式(I)化合物的合成:其中可以相同或不同的R 1,R 2和R 3各自独立地表示烷基,其特征在于酶水解 涉及将式(II)的化合物与仅进行式(II)化合物的两种酯官能团的化学选择性水解的酶接触以获得式(I)的化合物的反应。 本发明允许工业制备式(I)的中间体,其可用于制备药物活性成分瑞格列奈。

    METHOD FOR THE SYNTHESIS OF 4-BENZOFURAN-CARBOXYLIC ACID
    17.
    发明申请
    METHOD FOR THE SYNTHESIS OF 4-BENZOFURAN-CARBOXYLIC ACID 审中-公开
    合成4-苯并呋喃 - 羧酸的方法

    公开(公告)号:US20090131688A1

    公开(公告)日:2009-05-21

    申请号:US12036350

    申请日:2008-02-25

    摘要: The invention concerns a novel method for synthesis of 4-benzofuran-carboxylic acid or alkyl ester thereof.This method is characterized in that a reaction for aromatization of a compound of formula (II) is performed for the synthesis of the compound of formula (I), according to the scheme A2 below: wherein R independently represents hydrogen or a linear or branched C1-15 alkyl group.With the invention, it is possible to industrially synthesize 4-benzofuran-carboxylic acid or alkyl ester thereof with good yield and very good purity.

    摘要翻译: 本发明涉及一种合成4-苯并呋喃 - 羧酸或其烷基酯的新方法。 该方法的特征在于,根据下面的方案A2,进行式(II)化合物的芳构化反应,用于合成式(I)化合物:其中R独立地表示氢或直链或支链C1 -15烷基。 通过本发明,可以以良好的产率和非常好的纯度工业合成4-苯并呋喃 - 羧酸或其烷基酯。

    Process for the preparation of 1,3,2-oxazaborolidine compounds
    20.
    发明授权
    Process for the preparation of 1,3,2-oxazaborolidine compounds 失效
    制备1,3,2-恶唑硼烷化合物的方法

    公开(公告)号:US07586015B2

    公开(公告)日:2009-09-08

    申请号:US11698710

    申请日:2007-01-25

    IPC分类号: C07C33/34 C07C33/36 C07C33/38

    CPC分类号: C07F5/022

    摘要: A process is used for the preparation of 1,3,2-oxazaborolidine compounds.This process prepares compounds of formula (I) or (IA): in which: R1 is an alkyl or an aryl; and R2, R3, R4 and R5 are especially a hydrogen atom or an alkyl, wherein the following are reacted in two steps: a) a boric precursor compound with an acetal compound to give a boronate compound; and b) the boronate compound with an amino alcohol compound. This process avoids by-products and exhibits a very good stereospecificity.

    摘要翻译: 使用一种制备1,3,2-恶唑硼烷化合物的方法。 该方法制备式(I)或(IA)的化合物:其中:R1是烷基或芳基; R2,R3,R4和R5特别是氢原子或烷基,其中以下两个步骤反应:a)硼化前体化合物与缩醛化合物,得到硼酸酯化合物; 和b)硼酸酯化合物与氨基醇化合物。 这个过程避免副产物,并具有很好的立体定向性。