Process for the preparation of the 2-oxoindole derivative, Ropinirole
申请人:Helm AG
公开号:EP1568689A1
公开(公告)日:2005-08-31
The present invention relates to a process for the preparation of Ropinirole comprising the step of cyclizing a compound of the formula 15.
本发明涉及一种制备洛匹尼罗尔的方法,包括将式15的化合物环化的步骤。
[EN] PROCESS FOR PURIFICATION OF ROPINIROLE<br/>[FR] PROCESSUS DE PURIFICATION DE ROPINIROLE
申请人:TORRENT PHARMACEUTICALS LTD
公开号:WO2005080333A1
公开(公告)日:2005-09-01
The invention discloses an improved process for the purification of ropinirole hydrochloride by dissolving or suspending crude ropinirole base or its pharmaceutically acceptable salt in a suitable solvent, reacting with a nitrogenous base to form an imine derivative, optionally treating the reaction mixture with a base to adjust the pH, and isolating purified ropinirole hydrochloride. The invention also provides for a pharmaceutical composition comprising pure ropinirole hydrochloride as active ingredient.