Pair of panaxtriol saponins and preparation method of mixture of pair of panaxtriol saponins
A technology of triol saponins and mixtures, applied in the field of medicine, can solve problems such as undiscovered preparation methods and the like
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[0024] Embodiment: Sodium hydroxide hydrolysis method prepares 25Rmdt and 25Smdt and their mixture (racemate)
[0025] Weigh 10g of Panax notoginseng total saponins, dissolve in 1000ml of methanol aqueous solution with a concentration of 2.5mol / L and 80% sodium hydroxide, and heat to reflux for hydrolysis for 24 hours, neutralize the reaction solution with 2.5mol / L hydrochloric acid, and recover methanol under reduced pressure , the reaction solution was extracted with chloroform, the chloroform phase was washed with water, dried over anhydrous sodium sulfate, evaporated to dryness to collect the residue, separated by silica gel column chromatography, petroleum ether: ethyl acetate (10:1-1:1) gradient elution to obtain 86 fractions, fractions 52-55 were recrystallized from ethyl acetate to obtain 25Rmdt; fractions 56-58 were combined after TLC inspection, and after removing the solvent, ethyl acetate recrystallized to obtain a mixture of 25Rmdt and 25Smdt (race Spin body); Fra...
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