Method for producing optically active 3,5-dihydroxycarboxylic acid derivative
    3.
    发明授权
    Method for producing optically active 3,5-dihydroxycarboxylic acid derivative 失效
    光学活性3,5-二羟基羧酸衍生物的制造方法

    公开(公告)号:US06998495B2

    公开(公告)日:2006-02-14

    申请号:US10492507

    申请日:2002-10-24

    IPC分类号: C07C51/36

    摘要: A method for producing an optically active 3,5-dihydroxyhexanoic acid derivative by stereoselectively reducing an optically active 3-oxo-5-hydroxyhexanoic acid derivative is provided. The method, which requires neither an ultralow-temperature reactor, an incubator, nor protection of the 5-position hydroxy group, is simple and economical.An optically active 3,5-dihydroxyhexanoic acid derivative is produced by asymmetrical hydrogenation of an optically active 3-oxo-5-hydroxyhexanoic acid derivative catalyzed by an RuBr2BINAP complex prepared from a ruthenium complex and a ruthenium-optically active phosphine complex, i.e., 2,2′-bisdiarylphosphino-1,1′-binaphthyl (BINAP), while using extremely inexpensive hydrogen as the reductant.

    摘要翻译: 提供了通过立体选择性还原旋光性3-氧代-5-羟基己酸衍生物制备光学活性3,5-二羟基己酸衍生物的方法。 既不需要超低温反应器,培养箱也不需要保护5位羟基的方法简单经济。

    Process for producing norstatin derivatives
    4.
    发明授权
    Process for producing norstatin derivatives 失效
    生产不饱和抑制素衍生物的方法

    公开(公告)号:US06281379B1

    公开(公告)日:2001-08-28

    申请号:US09578446

    申请日:2000-05-26

    IPC分类号: C07C22900

    摘要: This invention to provide a process for producing an optically active threo-phenylnorstatin derivative which does not require a toxic cyanating agent or a costly reagent, or a complicated procedure, and can be practiced on a commercial scale. This invention is directed to a process for producing a &bgr;-amino-&agr;-hydroxy acid derivative which comprises treating either a &ggr;-amino-&bgr;-keto sulfoxide derivative with a halogenating agent to produce a &ggr;-amino-&agr;-halo-&bgr;-keto sulfoxide derivative, treating the same with an acid and an alcohol to produce a &bgr;-amino-&agr;-keto ester derivative or &bgr;-amino-&agr;-keto acid derivative, and followed by reducing.

    摘要翻译: 本发明提供一种不需要有毒的氰化剂或昂贵的试剂的光学活性的苏氨酸苯基抑制素衍生物的制备方法或复杂的方法,并且可以以商业规模实施。本发明涉及一种用于 产生β-氨基-α-羟基酸衍生物,其包括用卤化剂处理γ-氨基-β-酮亚砜衍生物以产生γ-氨基-α-卤代-β-酮亚砜衍生物,用 酸和醇,生成β-氨基-α-酮酯衍生物或β-氨基-α-酮酸衍生物,然后还原。

    Method for producing (R)-3-[4-(trifluoromethyl) phenylamino]-pentanoic acid amide derivative
    9.
    发明授权
    Method for producing (R)-3-[4-(trifluoromethyl) phenylamino]-pentanoic acid amide derivative 失效
    (R)-3- [4-(三氟甲基)苯基氨基] - 戊酸酰胺衍生物的制备方法

    公开(公告)号:US07223859B2

    公开(公告)日:2007-05-29

    申请号:US10801141

    申请日:2004-03-16

    IPC分类号: C07D205/02 C07C233/00

    摘要: The present invention provides a method for easily producing an (R)-3-[4-(trifluoromethyl)phenylamino]-pentanoic acid amide derivative useful for an intermediate for pharmaceutical products, particularly an inhibitor of a cholesteryl ester transfer protein (CETP) from easily available raw materials. In the present invention, (S)-N-[4-(trifluoromethyl)phenyl]-3-hydroxypentanoic acid amide prepared from easily available raw materials leads a production of (R)-4-ethyl-1-[4-(trifluoromethyl)phenyl]-2-azetidinone to give (R)-3-[4-(trifluoromethyl)phenylamino]-pentanoic acid amide. Furthermore, (R)-4-ethyl-1-[4-(trifluoromethyl)phenyl]-2-azetidinone is reacted with a carbamic acid ester to give an (R)-3-[4-(trifluoromethyl)phenylamino]-pentanoic acid amide derivative.

    摘要翻译: 本发明提供了一种容易地制备用于药物产品中间体(特别是胆固醇酯转移蛋白(CETP)抑制剂)的(R)-3- [4-(三氟甲基)苯基氨基] - 戊酸酰胺衍生物的方法, 容易获得的原料。 在本发明中,由容易获得的原料制备的(S)-N- [4-(三氟甲基)苯基] -3-羟基戊酸酰胺导致(R)-4-乙基-1- [4-(三氟甲基) )苯基] -2-氮杂环丁酮,得到(R)-3- [4-(三氟甲基)苯基氨基] - 戊酸酰胺。 此外,将(R)-4-乙基-1- [4-(三氟甲基)苯基] -2-氮杂环丁酮与氨基甲酸酯反应,得到(R)-3- [4-(三氟甲基)苯基氨基] - 戊酸 酰胺衍生物。