[EN] PROCESS FOR RESOLUTION OF 2-AMINO-6-PROPYLAMINO-4,5,6,7-TETRAHYDROBENZOTHIAZOLE AND COMPOUNDS THEREFOR<br/>[FR] PROCEDE DE DEDOUBLEMENT DE 2-AMINO-6-PROPYLAMINO-4,5,6,7-TETRAHYDROBENZOTHIAZOLE ET COMPOSES UTILISES A CET EFFET
申请人:SYNTHON BV
公开号:WO2002022591A1
公开(公告)日:2002-03-21
A process for resolving or enriching (R,S) 2-amino-6-propylamino-4,5,6,7-tetrahydrobenzothiazole (pramipexole) into optical isomers uses a monovalent salt thereof, e.g. pramipexole monohydrochloride, as a substrate. The monovalent salt is treated with an optically active acid, e.g. with L(+)-tartaric acid, to yield a diastereomeric mixed salt. The mixed salt is subjected to fractional crystallization to yield an optically enriched mixed salt. The mixed salt can be treated with base to liberate the desired isomer of pramipexole.
将(R,S)2-氨基-6-丙基氨基-4,5,6,7-四氢苯并噻唑(普拉米佩克索)分离或富集成光学异构体的过程使用其单价盐,例如普拉米佩克索单盐酸盐,作为底物。将单价盐与光学活性酸,例如L(+)-酒石酸,处理以产生对映异构的混合盐。混合盐经过分馏结晶,得到富集光学异构体的混合盐。可以用碱处理混合盐以释放所需的普拉米佩克索异构体。