A stilbene compound with anti-enteritis activity in Qingdai and its preparation method and application
A technology for stilbenes and compounds, which is applied in the fields of ether preparation, organic chemistry, digestive system, etc., to achieve the effects of simple extraction method, high yield and economical cost
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[0077] The extraction method of 5-(2,4-dimethoxyphenethyl)benzene-1,2,3-triol (DP-I), comprises the steps:
[0078] 1) Pulverize Qingdai (10Kg), cold-soak with 95% ethanol (25L×3 times), combine the extracts, concentrate under reduced pressure, and obtain a crude extract (950g);
[0079] 2) Disperse the crude extract of Qingdai obtained in step 1) in water, and sequentially extract with petroleum ether (5L×3 times) and ethyl acetate (5L×3 times) to obtain ethyl acetate extract (420g);
[0080] 3) The ethyl acetate extract obtained in step 2) is passed through D101 macroporous adsorption resin for impurity removal and adsorption, followed by elution with 30% ethanol (10L) and 85% (15L) ethanol, and the 85% ethanol eluate is collected, Concentrate under reduced pressure to obtain 80% ethanol eluate extract (195g);
[0081] 4) In step 3), elute the extract with 85% ethanol, separate it with normal phase silica gel, and use volume ratios of 15:1 (6 column volumes), 10:1 (6 column...
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