Title:
METHOD FOR EXTRACTING HERBACETIN FROM RHODIOLA ROSEA
Document Type and Number:
WIPO Patent Application WO/2017/139962
Kind Code:
A1
Abstract:
A method for extracting herbacetin from rhodiola rosea comprises the steps of: 1) extracting a medicinal material by using an extraction solvent, and then concentrating to obtain an extract paste; 2) extracting the extract paste, and acid hydrolyzing an aqueous layer obtained from the extraction; 3) extracting a solution obtained from the acid hydrolysis with an organic solvent, combining with the extraction solution, concentrating under reduce pressure to obtain an extract of herbacetin; 4) treating the extract of herbacetin with polyamide column chromatography, collecting fractions containing herbacetin, concentrating till dry, and recrystallizing to obtain a pure product of herbacetin.
Inventors:
GU ZHENGBING (CN)
ZHANG JIE (CN)
TAO YUEHONG (CN)
ZENG CHENG (CN)
XU LILI (CN)
ZHANG JIE (CN)
TAO YUEHONG (CN)
ZENG CHENG (CN)
XU LILI (CN)
Application Number:
PCT/CN2016/074095
Publication Date:
August 24, 2017
Filing Date:
February 19, 2016
Export Citation:
Assignee:
TAIZHOU FOREVER BIOTECHNOLOGY CO LTD (CN)
International Classes:
C07D311/30; A61K31/352; A61K36/41
Domestic Patent References:
| WO2009151173A1 | 2009-12-17 |
Other References:
LI, TAO ET AL.: "Study on the Chemical Constituents of Rhodiola Crenulata", WEST CHINA JOURNAL OF PHARMACEUTICAL SCIENCES, vol. 27, no. 4, 30 April 2012 (2012-04-30), pages 367 - 370, XP009508426
See also references of EP 3418274A4
See also references of EP 3418274A4
Attorney, Agent or Firm:
BEIJING UTC LIANFENG INTELLECTUAL PROPERTY AGENCY (GENERAL PARTNERSHIP) (CN)
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