Catalytic synthesis of vitamin A intermediate
    4.
    发明授权
    Catalytic synthesis of vitamin A intermediate 有权
    维生素A中间体的催化合成

    公开(公告)号:US09040742B2

    公开(公告)日:2015-05-26

    申请号:US14368914

    申请日:2012-12-14

    CPC classification number: C07C67/29 C07C403/12 C07C2601/16

    Abstract: The present invention relates to a process of production of a compound, which is useful as an intermediate (building block) in organic synthesis, especially in the synthesis of vitamin A or β-carotene and derivatives thereof, e.g. canthaxanthin, astaxanthin or zeaxanthin.

    Abstract translation: 本发明涉及一种化合物的制备方法,其可用作有机合成中的中间体(结构单元),特别是合成维生素A或其组合物 - 胡萝卜素及其衍生物。 角黄素,虾青素或玉米黄质。

    Crystallization of 25-hydroxy-7-dehydrocholesterol

    公开(公告)号:US10316055B2

    公开(公告)日:2019-06-11

    申请号:US15774697

    申请日:2016-11-28

    Abstract: The present invention relates to a method of purification of compound of formula (I) which comprises the step of crystallization of compound of formula (I) from a composition comprising the compound of formula (I) and the compound of formula (II) and a specific solvent system containing ethanol, 1-propanol, 2-propanol, 2-methyl-1-propanol, 1-butanol or 2-butanol.

    CATALYTIC SYNTHESIS OF VITAMIN A INTERMEDIATE
    7.
    发明申请
    CATALYTIC SYNTHESIS OF VITAMIN A INTERMEDIATE 有权
    维生素A中间体的催化合成

    公开(公告)号:US20150031910A1

    公开(公告)日:2015-01-29

    申请号:US14368914

    申请日:2012-12-14

    CPC classification number: C07C67/29 C07C403/12 C07C2601/16

    Abstract: The present invention relates to a process of production of a compound, which is useful as an intermediate (building block) in organic synthesis, especially in the synthesis of vitamin A or β-carotene and derivatives thereof, e.g. canthaxanthin, astax-anthin or zeaxanthin.

    Abstract translation: 本发明涉及一种化合物的制备方法,其可用作有机合成中的中间体(结构单元),特别是合成维生素A或其组合物 - 胡萝卜素及其衍生物。 角黄素,阿斯泰沙星或玉米黄质。

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