[EN] PROCESS FOR THE PREPARATION OF MEMANTINE HYDROCHLORIDE<br/>[FR] PROCÉDÉ DE PRÉPARATION D'HYDROCHLORURE DE MÉMANTINE
申请人:HETERO RESEARCH FOUNDATION
公开号:WO2011125062A1
公开(公告)日:2011-10-13
The present invention provides an improved process for the preparation of 1-bromo-3,5-dimethyladamantane. The present invention also provides a process for preparing free flowing solid of 1-acetamido-3,5-dimethyladamantane. The present invention further provides a process for the preparation of memantine hydrochloride substantially free of 1-amino-3,5,7-trimethyladamantane hydrochloride and/or 1-amino-3-methyladamantane hydrochloride impurity.
本发明提供了一种改进的制备1-溴-3,5-二甲基金刚烷的工艺。本发明还提供了一种制备1-乙酰氨基-3,5-二甲基金刚烷自由流动固体的工艺。本发明还进一步提供了一种制备膜antine盐酸盐的工艺,该工艺几乎不含1-氨基-3,5,7-三甲基金刚烷盐酸盐和/或1-氨基-3-甲基金刚烷盐酸盐杂质。