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    • 6. 发明申请
    • PROCESS FOR THE PREPARATION OF TAMSULOSIN AND INTERMEDIATES THEREOF
    • 制备TAMSULOSIN及其中间体的方法
    • WO2006061549A1
    • 2006-06-15
    • PCT/GB2005/000155
    • 2005-01-18
    • HOVIONE INTER LTD.TURNER, Craig, RobertMENDES, ZitaBAPTISTA, JoanaMARTIN, DionisioHEGGIE, William
    • MENDES, ZitaBAPTISTA, JoanaMARTIN, DionisioHEGGIE, William
    • C07C303/38C07C311/37C07C309/46A61K31/18
    • C07C303/38C07B2200/07C07C303/08C07C303/22C07C309/49C07C311/37C07C309/88
    • A process for producing tamsulosin of formula (I) and pharmaceutically acceptable addition salts, thereof comprises the steps of : a) Reacting compound R,R-[2-(4-methoxy-phenyl)-1-methyl-ethyl]-(1-phenyl-ethyl)-amine of formula (II) or a salt thereof (II) with chlorosulfonic acid with or without an organic solvent, to obtain compound R,R-2methoxy-5-[2-(1-phenyl-ethylamino)-propyl]-benzenesulfonic acid of formula (III) b) Hydrogenolysis of compound R,R-2-methoxy-5-[2-(1-phenyl-ethylamino)-propyl]- benzenesulfonic acid of formula III or a salt thereof carried out in an alcohol in the presence of a palladium catalyst using hydrogen or a source of hydrogen, to obtain compound R-(-)-5-(2-amino-propyl)-2-methoxy-benzenesulfonic acid of formula (IV) c)Reacting primary amine R-(-)-5-(2-amino-propyl)-2-methoxy-benzenesulfonic acid of formula (IV), or a salt thereof, with a compound of formula (V) wherein X represents an halogen atom selected from the group consisting of C1;Br and I, to obtain 5- [(2R)-2-[2-(2-ethoxy-phenoxy)-ethylamino]-propyl]-2-methoxy-benzenesulfonic acid compound of formula (VI) d) Reacting compound of formula (VI) with an halogenating agent, to obtain the corresponding sulfonylchloride of formula (VII). e)Reacting compound VII with ammonia to obtain compound I.
    • 制备式(I)的坦索罗辛及其药学上可接受的加成盐的方法包括以下步骤:a)使化合物R,R- [2-(4-甲氧基 - 苯基)-1-甲基 - 乙基] - (1 苯基 - 乙基) - 胺或其盐(II)与具有或不含有机溶剂的氯磺酸反应,得到化合物R,R-2-甲氧基-5- [2-(1-苯基 - 乙基氨基) - 丙基] - 苯磺酸b)氢化式III化合物R,R-2-甲氧基-5- [2-(1-苯基 - 乙基氨基) - 丙基] - 苯磺酸或其载体的盐 在使用氢或氢源的钯催化剂存在下在醇中进行反应,得到式(IV)的化合物R - ( - ) - 5-(2-氨基 - 丙基)-2-甲氧基 - 苯磺酸c )将式(Ⅳ)的伯胺R - ( - ) - 5-(2-氨基丙基)-2-甲氧基 - 苯磺酸或其盐与式(Ⅴ)化合物反应其中X代表卤素 选自C1; Br和I的原子,得到5 - (Ⅵ)的[(2R)-2- [2-(2-乙氧基 - 苯氧基) - 乙基氨基] - 丙基] -2-甲氧基 - 苯磺酸化合物d)将式(Ⅵ)化合物与卤化剂 ,得到相应的式(Ⅶ)磺酰氯。 e)将化合物VII与氨反应得到化合物I.