Title:
METHOD FOR PREPARING CANNABIDIOL BY MEANS OF HIGH-SPEED COUNTERCURRENT CHROMATOGRAPHY SEPARATION AND PURIFICATION
Document Type and Number:
WIPO Patent Application WO/2020/119001
Kind Code:
A1
Abstract:
Provided is a method for preparing cannabidiol by means of high-speed countercurrent chromatography separation and purification, comprising alcohol extraction-water precipitation, adsorption with a macroporous resin, and high-speed countercurrent chromatography separation. By combining a macroporous resin chromatographic column and a high-speed countercurrent chromatograph, and optimizing process parameters, cannabidiol with a high purity is separated from flowers and leaves of industrial hemp, and a psychotoxic component, i.e. tetrahydrocannabinol, is also removed at the same time. The solvent used therein is environmentally friendly, has no remainder, is low in cost and is recyclable, such that the method is suitable for industrial production.
Inventors:
DENG QIUYUN (CN)
Application Number:
PCT/CN2019/083401
Publication Date:
June 18, 2020
Filing Date:
April 19, 2019
Export Citation:
Assignee:
TECHSON INDUSTRY COMPANY LTD (CN)
International Classes:
C07C37/70; C07C37/68; C07C37/72; C07C37/82
Domestic Patent References:
| WO2018032727A1 | 2018-02-22 | |||
| WO2004026802A1 | 2004-04-01 |
Foreign References:
| CN109942380A | 2019-06-28 | |||
| CN105505565A | 2016-04-20 | |||
| CN103739585A | 2014-04-23 | |||
| CN1621832A | 2005-06-01 | |||
| US6403126B1 | 2002-06-11 |
Other References:
XIAO PEIYUN ET AL., CHINESE JOURNAL OF PHARMACEUTICALS, vol. 39, no. 4, 2008
See also references of EP 3896050A4
See also references of EP 3896050A4
Attorney, Agent or Firm:
SHANGHAI TECHNOVO INTELLECTUAL PROPERTY AGENT FIRM (CN)
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