[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 [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
Convergent synthesis of (R)-silodosin via decarboxylative cross-coupling
作者:Tie-Gen Chen、Lucas Mele、Olivier Jentzer、Dominique Delbrayelle、Pierre-Georges Echeverria、Julien C. Vantourout、Phil S. Baran
DOI:10.1016/j.tetlet.2021.153290
日期:2021.8
A new approach to Silodosin capitalizing on a radical retrosynthetic strategy to dissect the molecule into two halves is reported. Using a reductive decarboxylative cross-coupling, a simple indoline can be coupled to a chiral pool-derived fragment to arrive at the target in only seven steps (LLS). This route avoids the use of resolution strategies or asymmetric hydrogenation that requires a subsequent
[EN] PROCESS FOR THE PREPARATION OF SILODOSIN<br/>[FR] PROCÉDÉ DE PRÉPARATION DE SILODOSINE
申请人:MINAKEM
公开号:WO2021205023A1
公开(公告)日:2021-10-14
The present invention relates to a new process of preparation of Silodosin, or a pharmaceutically acceptable salt thereof. Another aspect of the invention concerns compounds of formula II: or their pharmaceutically acceptable salts thereof, and their use for the preparation of Silodosin or a pharmaceutically acceptable salt thereof.
METHOD FOR PREPARING SILODOSIN AND INTERMEDIATE THEREOF
申请人:SHANGHAI SYNCORES TECHNOLOGIES, INC.
公开号:US20160304452A1
公开(公告)日:2016-10-20
Provided is a method for preparing silodosin. Also provided is a method for preparing an organic acid salt of a new intermediate 3-(7-cyano-5-((R)-2-((R)-1-phenylethylamino)propyl)-1-hydrogen-indolyl) propyl alcohol (ester or ether), and a new intermediate 3-(7-cyano-5-((R)-2-(((R)-1-phenethyl)(2-(2-(trifluoroethoxy)phenoxy) ethyl)amino)propyl)1-hydrogen-indolyl)propyl alcohol (ester or ether) and a salt thereof. The method has the following advantages: raw materials are cheap and easy to obtain, the operation is simple, the intermediate and product are easy to purify, the yield is high, and the method is applicable to industrial production.