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    • 3. 发明专利
    • METHOD FOR PRODUCING 2',3'-DIDEHYDRO-3'-DEOXYTHYMIDINE (d4T) BY USING 5-METHYLURIDINE
    • 通过使用5-甲基嘌呤制备2',3'-二脱氢-3'-脱氧谷氨酸(d4T)的方法
    • JP2005139197A
    • 2005-06-02
    • JP2004373339
    • 2004-12-24
    • Bristol Myers Squibb Coブリストル−マイヤーズ スクイブ カンパニーBristol−Myers Squibb Company
    • CHEN BANG-CHISTARK DERRON RBAKER STEPHEN RQUINLAN SANDRA L
    • C07D405/04A61K31/505A61K31/513A61P31/12A61P31/18C07H19/06
    • C07H19/06
    • PROBLEM TO BE SOLVED: To provide a method for purifying 2',3'-didehydro-3'-deoxythymidine (d4T) used as an anti-HIV (human immunodeficiency virus) pharmaceutical.
      SOLUTION: This method for purifying the d4T comprises (a) reacting 5-metyluridine expressed by formula X with mesyl chloride in the presence of an organic base having a pKa value of 5.5 to 8.0, to mesylate hydroxy groups at the 2', 3', and 5' positions, and treating the mesylated compound with a hydroxide to synthesize 2,2'-anhydro-compound VIII, (b) substituting the 5'-mesyl group of the compound VIII with a benzoate anion, then hydrobrominating the substituted compound VIII, to synthesize 5'-benzoyl-2'-bromo-compound VI, and further subjecting the compound VI to reductive elimination reaction in the presence of a reduction metal, to form d4T 5'-benzoate III, (c) treating the compound III with butylamine and further treating the treated compound III with N-methylpyrrolidine and butyl acetate, to obtain d4T-NMPO solvate II, and (d) heating the d4T-NMPO solvate II in an alcoholic medium, to decompose the solvate II.
      COPYRIGHT: (C)2005,JPO&NCIPI
    • 待解决的问题:提供用作抗HIV(人类免疫缺陷病毒)药物的2',3'-二脱氢-3'-脱氧胸苷(d4T)的纯化方法。 解决方案:这种纯化d4T的方法包括:(a)在pKa值为5.5-8.0的有机碱存在下,使式X表示的5-甲基尿嘧啶与甲磺酰氯反应,在2' ,3'和5'位,并用氢氧化物处理甲磺酰化的化合物以合成2,2'-脱水化合物VIII,(b)用苯甲酸根阴离子取代化合物VIII的5'-甲磺酰基,然后加入氢溴酸 取代的化合物VIII,合成5'-苯甲酰基-2'-溴化合物VI,并在还原金属存在下进一步对化合物VI进行还原消除反应,形成d4T5-苯甲酸酯III,(c) 用丁胺处理化合物III,并用N-甲基吡咯烷和乙酸丁酯进一步处理经处理的化合物III,得到d4T-NMPO溶剂合物II,和(d)在醇介质中加热d4T-NMPO溶剂化物II,分解溶剂化物II 。 版权所有(C)2005,JPO&NCIPI