[EN] A METHOD OF MANUFACTURING (-)-L-(3-HYDROXYPROPYL)-5-[(2R)-2-({2,2,2-TRIFLUOROETHOXY)- PHENOXYETHYL}AMINO)PROPYL]-2,3-DIHYDRO-LH-INDOLE-7-CARBOXAMIDE<br/>[FR] PROCÉDÉ DE FABRICATION DU COMPOSÉ (-)-L-(3-HYDROXYPROPYL)-5-[(2R)-2-({2,2,2-TRIFLUOROÉTHOXY)-PHÉNOXYÉTHYL}AMINO)PROPYL]-2,3-DIHYDRO-LH-INDOLE-7-CARBOXAMIDE
申请人:ZENTIVA KS
公开号:WO2012062229A1
公开(公告)日:2012-05-18
A method of manufacturing optically pure or optically enriched silodosin of formula I and of its pharmaceutically acceptable salts, in which a secondary amine of general formula II, wherein Bn denotes a phenylmethyl group, substituted or unsubstituted in the benzene ring, e.g. benzyl or 4-methoxybenzyl, or the benzhydryl or trityl group, (a) is N-alkylated with an alkylating agent of general formula III, wherein X denotes a good leaving group, such as a halogen or an alkane sulfonyloxyl group RS020 or an arene SLilfonyloxyl group ArS020, R means an alkyl group with 1 to 4 carbon atoms and Ar is a substituted or unsubstituted phenyl group; (b) the obtained tertiary amine of general formula IV, wherein Bn is as defined above, is hydrogenolyzed with hydrogen on a metal catalyst; (c) and the resulting nitrile of formula V, wherein Bn is as defined above, is hydrolyzed by treatment with alkaline agents; and optionally, (d) additional O-debenzylation of the amide-ether of general formula VI, wherein Bn is as defined above, with dealkylating agents is carried out; and, if desired, the obtained silodosin is transformed to the respective salts by treatment with pharmaceutically acceptable acids.
将公式I的光学纯或光学富集硅唑洛新及其药用可接受盐的制备方法,其中一般公式II的二级胺,其中Bn表示苯甲基基团,在苯环中取代或未取代,例如苄基或4-甲氧基苄基,或苯甲基或三苯基基团,(a)与一般公式III的烷基化试剂,其中X表示良好的离去基团,例如卤素或烷基磺酰氧基团RS020或芳基SLilfonyloxyl基团ArS020,R表示具有1至4个碳原子的烷基基团,Ar是取代或未取代的苯基团;(b)所得到的一般公式IV的三级胺,其中Bn如上定义,与金属催化剂上的氢气氢解;(c)并且所得到的一般公式V的腈,其中Bn如上定义,通过碱性试剂处理水解;以及可选地,(d)使用脱烷基试剂对一般公式VI的酰胺-醚,其中Bn如上定义,进行额外的O-脱苄基化反应;如果需要,通过与药用可接受酸处理将所得到的硅唑洛新转化为相应的盐。