申请人:Hradil Pavel
公开号:US20110263863A1
公开(公告)日:2011-10-27
The invention deals with a preparation method of salts of 5-chloro-4-(2-imidazolin-2-yl-amino)-2,1,3-benzothiadiazole (tizanidine) of formula I, especially tizanidine hydrochloride, comprising preparation of a salt of tizanidine of formula I and a carboxylic acid as an intermediate, from which, after acidification with hydrogen chloride, tizanidine hydrochloride is obtained in a high yield and purity.
这项发明涉及一种制备5-氯-4-(2-咪唑啉-2-基氨基)-2,1,3-苯并噻二唑(替扎尼定)盐的方法,特别是替扎尼定盐酸盐的制备,包括制备替扎尼定的盐和羧酸作为中间体,经过与氯化氢酸化后,高产率和纯度地得到替扎尼定盐酸盐。