申请人:Wang Gang
公开号:US20110306792A1
公开(公告)日:2011-12-15
The present invention relates to a process for preparing tolterodine and the L-tartrate thereof. The preparation consists of the following steps: A) ammonolysis reaction between diisopropylamine and compound 2 (3,4-dihydro-6-methyl-4-phenyl-2H-benzopyran-2-one) activated by an activator to afford the amide 3; B) reduction of the amide by a reductant to give compound 1, i.e., racemic tolterodine free base; C) Resolution of the tolterodine free base to afford tolterodine L-tartrate. The present route is very short and suitable for industrial production.
本发明涉及一种制备托吡酯及其L-酒石酸盐的方法。制备过程包括以下步骤:A)用活化剂促进二异丙胺和化合物2(3,4-二氢-6-甲基-4-苯基-2H-苯并吡喃-2-酮)的氨解反应,得到酰胺3;B)用还原剂还原酰胺,得到化合物1,即外消旋托吡酯自由碱;C)分离托吡酯自由碱,得到托吡酯L-酒石酸盐。该制备路线非常简短,适合工业生产。