Method for preparing oxycodone
    5.
    发明授权
    Method for preparing oxycodone 有权
    羟考酮的制备方法

    公开(公告)号:US06403798B2

    公开(公告)日:2002-06-11

    申请号:US09793024

    申请日:2001-02-26

    IPC分类号: C07D48900

    CPC分类号: C07D489/06

    摘要: A method for the preparation of oxycodone, and salts thereof, from codeine comprising oxidation of codeine to codeinone, formation of an dienolsilyl ether congener of codeinone in strong amine base, oxidation of the dienolsilyl ether congener using peracetic acid, and hydrogenation of the resulting 14-hydroxycodeinone product.

    摘要翻译: 制备可待因的可待因的方法及其盐,所述可待因包括可待因氧化可卡因酮,在强胺碱中形成二烯醇基醚同系物,使用过乙酸的二烯醇醚同族物的氧化,以及所得的14 - 羟可待因酮产品。

    PREPARATION OF POLYMER-FREE R-(+)-ALPHA-LIPOIC ACID
    6.
    发明申请
    PREPARATION OF POLYMER-FREE R-(+)-ALPHA-LIPOIC ACID 有权
    无聚合R - (+) - 丙氨酸的制备

    公开(公告)号:US20100317873A1

    公开(公告)日:2010-12-16

    申请号:US12483918

    申请日:2009-06-12

    申请人: Fang-Ting Chiu

    发明人: Fang-Ting Chiu

    IPC分类号: C07D339/08 C07D339/04

    CPC分类号: C07D339/04 C07D339/08

    摘要: R-α-Lipoic acid and its homologs are converted to their magnesium salts in the presence of a reduced form of the acid, dihydro-(+)-lipoic acid in the case of R-α-lipoic acid itself. The reduced form serves as a polymerization inhibitor, resulting in a Mg di-R-α-lipoate product of higher purity. The reduced acid retained in the product tends to convert to the starting acid, thereby avoiding the inclusion of an extraneous polymerization inhibitor in the product.

    摘要翻译: 在R-α-硫辛酸本身的情况下,在还原形式的二氢 - (+) - 硫辛酸存在下,将R-α-硫辛酸及其同系物转化为其镁盐。 还原形式用作阻聚剂,得到更高纯度的Mg二-R-α-脂肪酸酯产物。 产物中残留的还原酸倾向于转化为起始酸,从而避免在产物中包含外来阻聚剂。

    Method for preparing oxycodone
    7.
    发明授权

    公开(公告)号:US06177567B1

    公开(公告)日:2001-01-23

    申请号:US09419409

    申请日:1999-10-15

    IPC分类号: C07D47100

    CPC分类号: C07D489/06

    摘要: A method for the preparation of oxycodone, and salts thereof, from codeine comprising oxidation of codeine to codeinone, formation of an dienolsilyl ether congener of codeinone in strong amine base, oxidation of the dienolsilyl ether congener using peracetic acid, and hydrogenation of the resulting 14-hydroxycodeinone product.

    Method for preparing oxycodone
    10.
    发明授权

    公开(公告)号:US06262266B1

    公开(公告)日:2001-07-17

    申请号:US09667997

    申请日:2000-09-22

    IPC分类号: C07D47100

    CPC分类号: C07D489/06

    摘要: A method for the preparation of oxycodone, and salts thereof, from codeine comprising oxidation of codeine to codeinone, formation of an dienolsilyl ether congener of codeinone in strong amine base, oxidation of the dienolsilyl ether congener using peracetic acid, and hydrogenation of the resulting 14-hydroxycodeinone product.