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    • 6. 发明授权
    • Process for preparing tiotropium bromide
    • 制备噻托溴铵的方法
    • US09090607B2
    • 2015-07-28
    • US14377271
    • 2013-02-08
    • Hovione International Limited
    • Luis SobralMarcio TemtemRafael AntunesBruna Nunes
    • C07D491/08C07D451/14C07D451/10
    • C07D451/14C07D451/10
    • The present invention relates to a novel process for the preparation of tiotropium bromide there is provided a process for preparing tiotropium bromide comprising (i) reacting scopine oxalate with diethylamine in an inert solvent to form scopine; (ii) reacting scopine and methyl di-(2-dithienyl)glycolate (MDTG) in the presence of an inorganic base, and in an inert solvent to form N-demethyltiotropium; (iii) reacting N-demethyltiotropium with bromomethane in an inert solvent to form tiotropium bromide; (iv) crystallizing tiotropium bromide in a mixture of methanol and acetone, and optionally thereafter, (v) micronizing the tiotropium bromide so formed.
    • 本发明涉及一种制备噻托溴铵的新方法,其提供了一种制备噻托溴铵的方法,其包括(i)在惰性溶剂中使草酸草丁酯与二乙胺反应以形成胡萝卜素; (ii)在无机碱的存在下和在惰性溶剂中反应西酞菁和二(2-二噻吩基)乙醇酸甲酯(MDTG)以形成N-脱甲基噻托铵; (iii)使N-去甲基二氢卟酚与溴甲烷在惰性溶剂中反应形成噻托溴铵; (iv)在甲醇和丙酮的混合物中结晶噻托溴铵,随后任选地(v)使如此形成的噻托溴铵微粉化。