Process for the preparation of naproxene nitroxyalkylesters
    4.
    发明申请
    Process for the preparation of naproxene nitroxyalkylesters 有权
    制备萘普生硝基烷基酯的方法

    公开(公告)号:US20050119339A1

    公开(公告)日:2005-06-02

    申请号:US10625558

    申请日:2003-07-24

    CPC分类号: C07C201/02 C07C203/04

    摘要: A process for obtaining nitroxyalklesters of the 2(S)(6-methoxy-2-naphthyl)-propanoic acid having an enantiomeric excess higher than or equal to 95%, preferably higher than or equal to 98%, characterized in that an halide of the 2-(S)-(6 methoxy-2-naphthyl)propanoic acid of formula A-Hal, wherein A is the acid acyl residue, is reacted in an inert orgariic solvent with an aliphatic nitroxyalkanol HO—Y—ONO2, wherein Y is a C2-C20 alkylene or a cycloalkylene from 3 to 8 carbon atoms, or an alkylene as defined containing a cycloalkylene as defined, in the presence of an inorganic base.

    摘要翻译: 一种获得具有高于或等于95%,优选高于或等于98%的对映异构体过量的2(S)(6-甲氧基-2-萘基) - 丙酸的硝基螺旋体的方法,其特征在于, 其中A是酸酰基残基的式A-Hal的2-(S) - (6-甲氧基-2-萘基)丙酸在惰性溶剂中与脂族硝基链烷醇HO-Y-ONO 2,其中Y是C 2 -C 20亚烷基或3至8个碳原子的亚环烷基,或如所定义的含有如所定义的亚环烷基的亚烷基 在无机碱存在下进行。

    Process for the preparation of naproxene nitroxyalkylesters
    6.
    发明授权
    Process for the preparation of naproxene nitroxyalkylesters 有权
    制备萘普生硝基烷基酯的方法

    公开(公告)号:US07238829B2

    公开(公告)日:2007-07-03

    申请号:US10625558

    申请日:2003-07-24

    IPC分类号: C07C203/10

    CPC分类号: C07C201/02 C07C203/04

    摘要: A process for obtaining nitroxyalklesters of the 2(S)(6-methoxy-2-naphthyl)-propanoic acid having an enantiomeric excess higher than or equal to 95%, preferably higher than or equal to 98%, characterized in that an halide of the 2-(S)-(6 methoxy-2-naphthyl)propanoic acid of formula A-Hal, wherein A is the acid acyl residue, is reacted in an inert organic solvent with an aliphatic nitroxyalkanol HO—Y—ONO2, wherein Y is a C2-C20 alkylene or a cycloalkylene from 3 to 8 carbon atoms, or an alkylene as defined containing a cycloalkylene as defined, in the presence of an inorganic base.

    摘要翻译: 一种获得具有高于或等于95%,优选高于或等于98%的对映异构体过量的2(S)(6-甲氧基-2-萘基) - 丙酸的硝基螺旋体的方法,其特征在于, 其中A是酸酰基残基的式A-Hal的2-(S) - (6甲氧基-2-萘基)丙酸在惰性有机溶剂中与脂族硝基链烷醇HO-Y-ONO 2,其中Y是C 2 -C 20亚烷基或3至8个碳原子的亚环烷基,或如所定义的含有如所定义的亚环烷基的亚烷基 在无机碱存在下进行。

    Process for the preparation of naproxene nitroxyalkylesters
    8.
    发明授权
    Process for the preparation of naproxene nitroxyalkylesters 有权
    制备萘普生硝基烷基酯的方法

    公开(公告)号:US06700011B1

    公开(公告)日:2004-03-02

    申请号:US10031412

    申请日:2002-01-18

    IPC分类号: C07C20304

    CPC分类号: C07C201/02 C07C203/04

    摘要: A process for obtaining nitroxyalkylesters of the 2-(S)-(6-methoxy-2-naphthyl)-propanoic acid having an enantiomeric excess higher than or equal to 95%, preferably higher than or equal to 98%, characterized in that an halide of the 2-(S)-(6-methoxy-2-naphthyl)-propanoic acid of formula A-Hal, wherein A is the acid acyl residue, is reacted in an inert organic solvent with an aliphatic nitroxyalkanol HO—Y—ONO2, wherein Y is a C2-C20 alkylene or a cycloalkylene from 3 to 8 carbon atoms, or an alkylene as defined containing a cycloalkylene as defined, in the presence of an inorganic base.

    摘要翻译: 一种获得具有高于或等于95%,优选高于或等于98%的对映体过量的2-(S) - (6-甲氧基-2-萘基) - 丙酸的硝基烷基酯的方法,其特征在于, 其中A是酸酰基残基的式A-Hal的2-(S) - (6-甲氧基-2-萘基) - 丙酸的卤化物在惰性有机溶剂中与脂族硝基链烷醇HO-Y- ONO 2,其中Y是C 3 -C 20亚烷基或3至8个碳原子的亚环烷基,或在无机碱存在下含有如定义的亚环烷基的亚烷基。

    Process for the preparation of gemfibrozil
    9.
    发明授权
    Process for the preparation of gemfibrozil 失效
    吉非贝齐的制备方法

    公开(公告)号:US5654476A

    公开(公告)日:1997-08-05

    申请号:US553329

    申请日:1995-11-16

    IPC分类号: C07C51/367 C07C59/68

    CPC分类号: C07C51/367

    摘要: A process for the preparation of 2,2-dimethyl-5-(2,5-xylyloxy)-valeric acid, which process comprises the reaction of 2,5-dimethylphenol with a compound of formula (II), ##STR1## wherein R is an alkyl, aryl, arylalkyl group and --X is a halogen atom, and the subsequent hydrolysis to compound (I), characterized in that the reaction of compound (II) with 2,5-dimethylphenol is carried out in the absence of solvents and in the presence of an ammonium or quaternary phosphonium salt.

    摘要翻译: PCT No.PCT / EP94 / 01508 Sec。 371日期:1995年11月16日 102(e)日期1995年11月16日PCT 1994年5月10日PCT PCT。 WO94 / 27948 PCT公开号 日期1994年12月8日制备2,2-二甲基-5-(2,5-二甲苯氧基) - 戊酸的方法,该方法包括2,5-二甲基苯酚与式(II)化合物的反应, (II)其中R是烷基,芳基,芳基烷基,-X是卤素原子,随后水解成化合物(I),其特征在于化合物(II)与2,5-二甲基苯酚 在不存在溶剂的情况下和在铵盐或季鏻盐的存在下进行。