用[(2 R,3 S -(+)-4--二甲基氨基-1,2-二苯基-3-甲基-2] 2:1络合物还原3-(二烷基氨基)-1-芳基-1-丙烷-丁醇](8)和氢化铝锂(LAH)在高ee(80-88%)中提供了相应的1,3-氨基醇,开发了该方法并将其用于合成LY248686(1),这是一种强力抑制剂血清素(5HT)和去甲肾上腺素(NE)的摄取,通过单晶X射线分析已确定了绝对构型。
(S)-N,N-Dimethyl-3-(1-naphthalenyloxy)-3-(2-thienyl)propanamine succinate (DNT-succinate) and polymorphs of DNT-succinate, compositions of DNT-succinate and its polymorphs, processes for the preparation of DNT-succinate and its polymorphs, and processes for the preparation of duloxetine hydrochloride from DNT-succinate are provided.
[EN] A PROCESS FOR PREPARING DULOXETINE AND INTERMEDIATES FOR USE THEREIN<br/>[FR] PROCEDE DE PREPARATION DE LA DULOXETINE ET INTERMEDIAIRES DESTINES A ETRE UTILISES DANS LEDIT PROCEDE
申请人:CIPLA LTD
公开号:WO2004056795A1
公开(公告)日:2004-07-08
A process for preparing (+)duloxetine, or an acid addition salt thereof, which process comprises resolving racemic (±)duloxetine with a chiral acid so as to obtain a salt of the chiral acid and (+)duloxetine, substantially free of (-)duloxetine; and (ii) if desired, converting the salt prepared in step (i) to the free base or another acid addition salt as appropriate. The process for preparing (+)duloxetine, or an acid addition salt thereof, can further comprise an O-alkylation intermediate process step which is carried out in the presence of a base and a phase transfer catalyst.
An Investigation on Key Parameters that Influence the Synthesis of (<i>S</i>)-(+)-<i>N</i>,<i>N</i>-Dimethyl-3-(1-naphthalenyloxy)-3-(2-thienyl)propylamine: A Key Intermediate for Duloxetine
This document highlights the systematic study of influencing factors such as temperature, base, catalyst, and solvent volume in the synthesis of (S)-(+)-N,N-dimethyl-3-(1-naphthalenyloxy)-3-(2-thienyl)propylamine oxalate 11a, without affecting the chiral purity.