[EN] AN IMPROVED PROCESS FOR THE PREPARATION OF PRAMIPEXOLE DIHYDROCHLORIDE MONOHYDRATE<br/>[FR] PROCÉDÉ AMÉLIORÉ DE PRÉPARATION DU MONOHYDRATE DU DICHLORHYDRATE DE PRAMIPEXOLE
申请人:PIRAMAL ENTPR LTD
公开号:WO2015155704A1
公开(公告)日:2015-10-15
The present invention relates to an improved process for the preparation of the dihydrochloride monohydrate salt of (S)-2-amino-4,5,6,7-tetrahydro-6- (propylamino)benzothiazole (the compound of formula I) comprising reacting the compound of formula II with n-propanal and sodium borohydride using a mixture of methanol and dichloromethane (DCM) as the solvent to obtain the compound of formula I; followed by converting the compound of formula I into its monohydrochloride salt; purifying the monohydrochloride salt of the compound of formula I; and finally converting the pure monohydrochloride salt of the compound of formula I into the dihydrochloride monohydrate salt.
[EN] PHARMACEUTICAL COMPOSITION OF PRAMIPEXOLE<br/>[FR] COMPOSITION PHARMACEUTIQUE DE PRAMIPEXOLE
申请人:SUN PHARMACEUTICAL IND LTD
公开号:WO2009109990A2
公开(公告)日:2009-09-11
A pharmaceutical composition comprising pramipexole or its pharmaceutically acceptable salts or its hydrates or solvates thereof, sugar alcohol (s) and a pharmaceutically acceptable carrier medium substantially free of polyvinyl pyrrolidone.