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    • 26. 发明授权
    • Method of preparing intermediate of salmeterol
    • 制备沙美特罗中间体的方法
    • US09447067B2
    • 2016-09-20
    • US14714196
    • 2015-05-15
    • AMPHASTAR PHARMACEUTICALS INC.
    • Yinhua QiuZhengyuan WuSong ChenHaoning Zhang
    • C07D319/08C07C213/00
    • C07D319/08C07C213/00
    • A method of preparing an intermediate of salmeterol (Compound 1, 2-amino-1-(2,2-dimethyl-4H-1,3-benzodioxin-6-yl)ethanol) includes: reacting compound 2 with 2-methoxypropene in a first organic solvent to produce a reaction solution including compound 3, compound 2 including a 2-bromo precursor of Compound 1; reacting compound 3 with a nitrogen source to produce compound 4; reacting compound 4 with sodium borohydride in a second organic solvent to produce compound 5; and debenzylating compound 5 by ammonium formate/palladium-carbon catalytic transfer hydrogenation in a third organic solvent to produce Compound 1. A method of preparing salmeterol includes preparing Compound 1, and reacting Compound 1 to prepare salmeterol.
    • 制备沙美特罗(化合物1,2,2-氨基-1-(2,2-二甲基-4H-1,3-苯并二恶英-6-基)乙醇)的中间体的方法包括:使化合物2与2-甲氧基丙烯反应 第一有机溶剂以产生包括化合物3,包含化合物1的2-溴前体的化合物2的反应溶液; 使化合物3与氮源反应生成化合物4; 使化合物4与硼氢化钠在第二有机溶剂中反应生成化合物5; 和在第三有机溶剂中通过甲酸铵/钯 - 碳催化转移氢化脱苄化化合物5以制备化合物1.制备沙美特罗的方法包括制备化合物1,并使化合物1与制备沙美特罗进行反应。
    • 29. 发明申请
    • METHOD OF PREPARING INTERMEDIATE OF SALMETEROL
    • 制备沙利度醇中间体的方法
    • US20160096816A1
    • 2016-04-07
    • US14714196
    • 2015-05-15
    • AMPHASTAR PHARMACEUTICALS INC.
    • Yinhua QiuZhengyuan WuSong ChenHaoning Zhang
    • C07D319/08C07C213/00
    • C07D319/08C07C213/00
    • A method of preparing an intermediate of salmeterol (Compound 1, 2-amino-1-(2,2-dimethyl-4H-1,3-benzodioxin-6-yl)ethanol) includes: reacting compound 2 with 2-methoxypropene in a first organic solvent to produce a reaction solution including compound 3, compound 2 including a 2-bromo precursor of Compound 1; reacting compound 3 with a nitrogen source to produce compound 4; reacting compound 4 with sodium borohydride in a second organic solvent to produce compound 5; and debenzylating compound 5 by ammonium formate/palladium-carbon catalytic transfer hydrogenation in a third organic solvent to produce Compound 1. A method of preparing salmeterol includes preparing Compound 1, and reacting Compound 1 to prepare salmeterol.
    • 制备沙美特罗(化合物1,2,2-氨基-1-(2,2-二甲基-4H-1,3-苯并二恶英-6-基)乙醇)的中间体的方法包括:使化合物2与2-甲氧基丙烯反应 第一有机溶剂以产生包括化合物3,包含化合物1的2-溴前体的化合物2的反应溶液; 使化合物3与氮源反应生成化合物4; 使化合物4与硼氢化钠在第二有机溶剂中反应生成化合物5; 和在第三有机溶剂中通过甲酸铵/钯 - 碳催化转移氢化脱苄化化合物5以制备化合物1.制备沙美特罗的方法包括制备化合物1,并使化合物1与制备沙美特罗进行反应。