Natural pharmaceutical composition, and preparation method and applications thereof
A technology of natural medicines and compositions, applied in the directions of drug combinations, pharmaceutical formulations, antitumor drugs, etc., to achieve the effects of convenience, obvious synergies, and high industrial practicability
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[0034] The first step: preparation of various extracts
[0035] (1) Preparation of the concentrated extract of Alisma chinensis decoction
[0036] According to the compatibility ratio of 1-4:1, take Alisma and white wood, soak in distilled water, heat and decoct, filter with silk cloth, add distilled water to the dregs, soak, decoct and filter in the same way, mix the two filtrates, heat and concentrate , filtered with an ultrafiltration membrane, and dried under reduced pressure.
[0037] (2) Preparation of alisol terpene alcohol B acetate
[0038] Percolate Alisma coarse powder with 80% ethanol, recover ethanol to 10%, put the oily extract on a silica gel column, elute with petroleum ether-ethyl acetate at a volume ratio of 10:1, and then use a solvent ratio of 10 : 3 petroleum ether-ethyl acetate elution, thin-layer chromatography detection, collect fractions, obtain crystallization, and then use petroleum ether-ethyl acetate recrystallization, promptly obtains alisol ter...
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