The invention relates to an process for preparing Tamsulosin hydrochloride of Formula (I) which comprises (i) reacting (R)-(−)-5-(2-amino-propyl)-2-methoxybenzenesulfonamide of Formula (II) with substituted phenoxy compound of Formula (III), wherein Z represents a removing group, such as —OSO
2
CH
3
, —OSO
2
C
6
H
4
CH
3
, —F, —Br, —Cl, or —I, in a solvent in the presence of an alkaline earth metal oxide to obtain Tamsulosin base and (ii) converting Tamsulosin base into hydrochloride salt in a solvent by addition of aqueous hydrochloric acid.
本发明涉及一种制备TamsulOSin hydrochloride(
化学式(I))的方法,该方法包括以下步骤:(i)在碱土金属氧化物的存在下,将
化学式(II)的(R)-(-)-5-(2-
氨基丙基)-2-
甲氧基苯磺酰胺与
化学式(III)的取代苯氧化合物反应,其中Z代表去除基团,例如-OSO2CH3,-OSO2C6H4CH3,-F,-Br,-Cl或-I,在溶剂中得到TamsulOSin base,(ii)通过加入
水盐酸将TamsulOSin base转化为盐酸盐的溶剂。