Labdane-type diterpene compound and its preparation method and use
A technology of compounds and diterpenes, applied in the application field in the preparation of antitumor drugs, can solve the problems of few components and activities, etc.
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[0023] The preparation method of the helianthene type diterpene compound of the present invention
[0024] Take 5 kg of dry powder of motherwort aerial parts (purchased from Shanghai Kangqiao Chinese Medicine Decoction Pieces Co., Ltd., place of origin Anhui), and use percolation method at room temperature to extract 3 times with petroleum ether to degrease, each volume is 15 L; the dregs are extracted with 95% ethanol for 3 times, each volume 15L, combined ethanol extracts, recovered under reduced pressure, to obtain 280g of ethanol extract. The extract was dissolved in 300ml of a mixed solvent of dichloromethane and methanol (1:1, V / V), mixed with silica gel to mix the sample (500g, 200-300 mesh), and the evenly mixed silica gel was obtained after evaporating the solvent. Use 200-300 mesh silica gel (1500g) to pack the column and separate the mixed sample silica gel. Elute with n-hexane-ethyl acetate gradient (10:1, 4:1, 2:1, 1:1, 1:4, 0:1, V / V). Collect the fraction elu...
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