Novel Method for the Preparation of Stavudine Polymorphic Form I and Form II
    1.
    发明申请
    Novel Method for the Preparation of Stavudine Polymorphic Form I and Form II 审中-公开
    用于制备司他夫定多形态I和II型的新方法

    公开(公告)号:US20120322996A1

    公开(公告)日:2012-12-20

    申请号:US12160629

    申请日:2007-02-26

    IPC分类号: C07H1/00

    CPC分类号: C07D405/04

    摘要: A novel method for the preparation of stavudine polymorphic form I and form II is described. 5′-acetate-2′,3′-diacetyl-5-methyluridine is reacted with catalytic amounts of sodium methoxide in a C1-C4 alcoholic solvent, resulting in crude stavudine form II. Crude stavudine form II can be converted into polymorphic stavudine form I by slurry at reflux in isopropanol, without isolating or purifying the crude stavudine form II.

    摘要翻译: 描述了一种制备司他夫定多形态I和II型的新方法。 5'-乙酸酯-2',3'-二乙酰基-5-甲基尿苷与C1-C4醇溶剂中的催化量的甲醇钠反应,得到粗制的司他夫定II型。 粗制的司他夫定II型可以通过在异丙醇中回流的浆液转化成I型多形态,而不分离或纯化粗制的司他夫定II型。

    Process for the preparation of a cyano-isobenzofuran
    3.
    发明授权
    Process for the preparation of a cyano-isobenzofuran 失效
    制备氰基异苯并呋喃的方法

    公开(公告)号:US07411077B2

    公开(公告)日:2008-08-12

    申请号:US10549062

    申请日:2004-03-09

    IPC分类号: C07D307/87 C07D307/00

    CPC分类号: C07D307/87

    摘要: A process for the preparation of citalopram and the pharmaceutically acceptable salts therof is disclosed by reacting 5-cyanophthalide with a 4-fluorophenyl magnesium halide, reducing the 3-hydroxymethyl-4-(4-fluorobenzoyl)benzonitrile with an agent reducing ketones to alcohols, submitting the thus-obtained 3-hydroxymethyl-4-[(4-fluorophenyl)hydroxymethyl)benzonitrile to a cyclization reaction to give 1-(4-fluorophenyl)-1,3-dihydro-5-isobenzofurancarbonitrile without 1,1-bis(4-fluorophenyl)-1,3-dihydro-5-isobenzofurancarbonitrile and treating 1,1-bis(4 fluorophenyl)-1,3-dihydro-5-isobenzofurancarbonitrile with a 3-(dimetylamino)propyl halide in the presence of a base.

    摘要翻译: 通过5-氰基苯酞与4-氟苯基卤化镁反应来制备西酞普兰和药学上可接受的盐的制备方法,将3-羟甲基-4-(4-氟苯甲酰基)苄腈用还原酮还原成醇, 将由此得到的3-羟甲基-4 - [(4-氟苯基)羟甲基)苄腈进行环化反应,得到1-(4-氟苯基)-1,3-二氢-5-异苯并呋喃腈, 4-氟苯基)-1,3-二氢-5-异苯并呋喃并在碱存在下用1-(二甲基氨基)丙基卤处理1,1-二(4-氟苯基)-1,3-二氢-5-异苯并呋喃腈 。

    Method for the preparation of citalopram
    4.
    发明申请
    Method for the preparation of citalopram 审中-公开
    西酞普兰制备方法

    公开(公告)号:US20070060759A1

    公开(公告)日:2007-03-15

    申请号:US10577869

    申请日:2004-10-22

    IPC分类号: C07F3/02 C07D311/58

    摘要: A method for the preparation of citalopram and its pharmaceutically acceptable salts is described; it's obtained starting from 5-cyanophthalide by reaction with a mixture of 4fluorophenyl magnesium bromide and 3-dimethylaminopropyl magnesium chloride. The intermediate obtained is showed here-be-low: wherein X is an halogen, preferably chlorine or bromine, which is cyclized without any isolation.

    摘要翻译: 描述了制备西酞普兰及其药学上可接受的盐的方法; 通过与4-氟苯基溴化镁和3-二甲基氨基丙基氯化镁的混合物反应从5-氰基苯酞起始得到。 获得的中间体显示为低至低:其中X是卤素,优选氯或溴,其在没有任何分离的情况下环化。