Pentacyclic triterpene saponin and application thereof
A technology of pentacyclic triterpenoids and saponins, which is applied in the field of medicine to achieve the effect of preventing and treating senile dementia
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[0031] Example 1. Compound Preparation
[0032] The dried root of Pulsatilla chinensis (100 g) was pulverized, extracted with 50% ethanol aqueous solution at 80° C. for 4 h, and the extract was concentrated under reduced pressure to obtain a concentrated solution. The concentrated solution was successively extracted with 100 mL of petroleum ether, dichloromethane and n-butanol, respectively. Extracted twice, the n-butanol extract was concentrated and then subjected to D101 macroporous adsorption resin column chromatography, followed by gradient elution with water, 30% ethanol, 50% ethanol, 70% ethanol and 95% ethanol. The 50% and 70% ethanol eluents were combined, concentrated under reduced pressure, dried, subjected to silica gel column chromatography, eluted with dichloromethane-methanol-water (9:1:0.1-7:3:0.3), and then prepared HPLC separation and purification, using methanol-acetonitrile-water (3:2:3) as mobile phase elution to obtain the compound.
[0033] Structure Ide...
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