PROCESS FOR THE PREPARATION OF GAMMA AMINO ACIDS AND INTERMEDIATES USED IN SAID PROCESS
    16.
    发明申请
    PROCESS FOR THE PREPARATION OF GAMMA AMINO ACIDS AND INTERMEDIATES USED IN SAID PROCESS 有权
    用于制备氨基酸的方法和在上述方法中使用的中间体

    公开(公告)号:US20140336412A1

    公开(公告)日:2014-11-13

    申请号:US14360201

    申请日:2012-11-22

    发明人: Mauro Adamo

    IPC分类号: C07C227/32

    摘要: The invention relates to the preparation of gamma amino acids of formula (I) and pharmaceutically acceptable salts, solvates and prodrugs thereof, and to intermediates used for their preparation. (formula I) wherein R1 is selected from an alkyl group, an alkenyl group, an alkynyl group and a cycloalkyl group, each of which may be optionally substituted and * denotes a chiral centre. In particular, the present invention provides an efficient synthesis of (S)-pregabalin which is suitable for carrying out on an industrial scale.

    摘要翻译: 本发明涉及式(I)的γ-氨基酸及其药学上可接受的盐,溶剂合物和前药以及用于其制备的中间体的制备。 (式I)其中R 1选自烷基,烯基,炔基和环烷基,其各自可以被任意取代,*表示手性中心。 特别地,本发明提供了适用于工业规模的(S) - 普瑞巴林的有效合成。

    PREPARATION METHOD OF 4-AMINOMETHYLBENZOIC ACID
    20.
    发明申请
    PREPARATION METHOD OF 4-AMINOMETHYLBENZOIC ACID 有权
    4-氨基乙酰苯甲酸的制备方法

    公开(公告)号:US20120296114A1

    公开(公告)日:2012-11-22

    申请号:US13522465

    申请日:2010-12-09

    申请人: Woo Sun Kim

    发明人: Woo Sun Kim

    IPC分类号: C07C227/26

    摘要: The present invention relates to a preparation method of 4-aminomethylbenzoic acid comprising the following steps: preparing 4-carboxylbenzaldehyde or an alkyl ester thereof (methyl 4-formyl benzoate); reacting the 4-carboxylbenzaldehyde or an alkyl ester thereof (methyl 4-formyl benzoate) with hydroxyamine to oximate the same; and contact reducing 4-carboxylbenzaldehyde oxime or an alkyl ester oxime thereof obtained by the oximation, through hydrogen in a sodium hydroxide aqueous solution. Since methyl 4-hydroxyiminomethylbenzoate is reacted as a raw material in the presence of an alkali, hydrogen of a relatively low pressure can be used and a purification process is also simple, thereby enabling preparation of 4-aminomethylbenzoic acid with a low cost and high yield.

    摘要翻译: 本发明涉及4-氨基甲基苯甲酸的制备方法,包括以下步骤:制备4-羧基苯甲醛或其烷基酯(4-甲酰基苯甲酸甲酯); 使4-羧基苯甲醛或其烷基酯(4-甲酰基苯甲酸酯)与羟胺反应,使其氧化; 并通过氢氧化钠水溶液中的氢气将通过肟化得到的4-羧基苯甲醛肟或其烷基酯肟接触。 由于在碱存在下使4-羟基亚氨基甲基苯甲酸甲酯作为原料反应,所以可以使用相对低压的氢,并且纯化方法也很简单,从而能够以低成本和高产率制备4-氨基甲基苯甲酸 。