3-benzoyl dehydrotumulosic acid
A technology of methanol and compounds, applied in the field of monomer compounds, to achieve the effects of improving learning and memory ability, prolonging the latency period, and reducing the number of mistakes
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Embodiment 1
[0064]Take 1 kg of Poria cocos, heat and reflux with 80% ethanol to extract three times, combine the extracts, recover under reduced pressure until there is no alcohol smell, and centrifuge; take the supernatant, pass it through 3LAB-8 macroporous adsorption resin, and after the adsorption is completed, sequentially Elute with 10L of 40% ethanol and 10L of 90% ethanol, combine the 90% ethanol eluent, recover the solvent, dry under reduced pressure, and combine with the centrifugal precipitate to obtain the dry extract I; take the extract I and add methanol to reflux to extract The liquid is nearly colorless, the extracts are combined, the solvent is recovered under reduced pressure, and dried under reduced pressure to obtain dry extract II; take the extract II, add 200ml of methanol to dissolve, mix in 500g of silica gel, evaporate the solvent to obtain mixed sample silica gel, and take another Blank silica gel 1.5Kg, add petroleum ether to fully swell, then wet-pack the column...
Embodiment 2
[0066] Take 1 kg of Poria cocos, heat and reflux with 70% ethanol to extract twice, combine the extracts, recover under reduced pressure until there is no alcohol smell, and centrifuge; take the supernatant, pass it through 2.5L AB-8 macroporous adsorption resin, and wait for the adsorption to complete. , sequentially eluted with 8L 30% ethanol and 12L 80% ethanol, combined the 80% ethanol eluent, recovered the solvent, dried under reduced pressure, and combined with the centrifugal precipitate to obtain dry extract I; take extract I and add methanol to reflux extraction When the extract is nearly colorless, combine the extracts, recover the solvent under reduced pressure, and dry under reduced pressure to obtain the dry extract II; take the extract II, add 200ml of methanol to dissolve, mix in 400g of silica gel, and evaporate the solvent to obtain the mixed sample silica gel. Another 1.8Kg of blank silica gel was taken, fully swelled with petroleum ether, and then wet-packed,...
Embodiment 3
[0068] Take 10 kg of Poria cocos medicinal material, use 70% ethanol to heat and reflux extract three times, combine the extracts, recover under reduced pressure until there is no alcohol smell, and centrifuge; take the supernatant, pass it through 30LAB-8 macroporous adsorption resin, and after the adsorption is completed, sequentially Elute with 70L of 40% ethanol and 100L of 80% ethanol, combine the 80% ethanol eluent, recover the solvent, dry under reduced pressure, and combine with the centrifugal precipitate to obtain dry extract I; take the extract I and add methanol to reflux and extract until the extraction The liquid is nearly colorless, the extracts are combined, the solvent is recovered under reduced pressure, and dried under reduced pressure to obtain the dry extract II; take the extract II, add 1500ml of methanol to dissolve, mix in 2kg of silica gel, and evaporate the solvent to obtain the mixed sample silica gel; Blank silica gel 8Kg, add petroleum ether to full...
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