Huperzia serrata (Thunb.) Trev. composition comprising compounded Huperzine A and Huperzine B and methods for preparing it
US8574633B2 · kind B2 · utility
1Cited by
1References
7Claims
0Family size
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Key dates
| Filing date | May 25, 2007 |
| Grant date | Nov 5, 2013 |
| Priority date | — |
| Expiry date | Jul 4, 2028 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07D211/06
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
The invention is directed to the field of natural medicine, specifically to alkaloid extracts of Huperzia serrata (Thunb.) Trev. A Huperzia serrata (Thunb.) Trev. composition and the method for preparing it are provided. The Huperzia serrata (Thunb.) Trev. composition comprises Huperzine A and Huperzine B, wherein the total content of the said Huperzine A and Huperzine B is 50-99 wt % of total alkaloids and the weight ratio of the said Huperzine A and Huperzine B is 1:0.5-5. The Huperzia serrata (Thunb.) Trev. composition of the invention has good therapeutic effect and improved safety.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.