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PRÉPARATION DE (-)-HUPERZINE A
专利权人:
Zhejiang Wanbang Pharmaceutical Plc.
发明人:
申请号:
EP14825676.1
公开号:
EP3023416A1
申请日:
2014.06.17
申请国别(地区):
EP
年份:
2016
代理人:
摘要:
The present invention relates to a method for preparing (-)-huperzine A. The method involves: allowing a mixture of (±)-huperzine A obtained from chemical synthesis and a chiral acid to form (±)-huperzine A chiral acid salt under suitable conditions; recrystallizing the chiral acid salt froman organic solvent and basifying with an alkali to obtain optically pure (-)-huperzine A. The method is convenient to operate and suitable for industrial production. The chemical purity and optical purity of (-)-huperzineA obtained by the method are each greater than 99.5%, satisfying the requirement for raw pharmaceutical purity in the pharmaceutical industry.
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