Preparation of isopentenyl flavone and application of isopentenyl flavone as medicine for treating cervical cancer
A technology of prenyl flavone and acetone, which is applied in the field of medicine
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Embodiment 1
[0025] Example 1: Preparation and structural identification of prenylflavones involved in the present invention
[0026] 1. Preparation of compound:
[0027] 1) Pulverize the rhizome of Prunus chinensis, add 8 times the amount of 10% ethanol solvent to reflux and extract for 3 times, and the extraction time is 3 hours each time, combine the extracts, filter, and concentrate under reduced pressure to obtain a concentrate.
[0028] 2) Suspend the concentrate obtained in step 1) with water, then go through macroporous adsorption resin column chromatography, and then select ethanol-water (0:100, 30:70, 40:60, 60:40, 95:5) Gradient elution was carried out, the eluate was collected, and concentrated under reduced pressure to obtain a concentrated solution containing prenyl flavone.
[0029] 3) The concentrated solution containing prenyl flavones is eluted with a mixed solvent of dichloromethane-methanol (100:0, 95:5, 9:1, 8:2, 7:3) through silica gel column chromatography , to obt...
Embodiment 2
[0034] Embodiment 2: the preparation of prenyl flavone involved in the present invention
[0035] 1) Pulverize the rhizome of Prunus chinensis, add 10 times the amount of 60% ethanol solvent to reflux and extract twice, and the extraction time is 2 hours each time, combine the extracts, filter, and concentrate under reduced pressure to obtain a concentrate.
[0036] 2) Suspend the concentrate obtained in step 1) with water, and then go through macroporous adsorption resin column chromatography, and then use ethanol-water (0:100, 30:70, 60:40, 95:5) for gradient elution , collect the eluate, concentrate under reduced pressure to obtain a concentrated solution containing prenyl flavone.
[0037] 3) Pass the concentrated solution containing prenyl flavone through silica gel column chromatography, cyclohexane-ethyl acetate (100: 0, 95: 5, 9: 1, 8: 2, 7: 3, 6: 4 ) mixed solvent for elution to obtain 8 fractions.
[0038] 4) The fourth fraction obtained in step 3) was subjected to...
Embodiment 3
[0040] Embodiment 3: the preparation of prenylflavone involved in the present invention
[0041] Compound preparation:
[0042] 1) Pulverize the rhizome of Prunus chinensis, add 15 times the amount of 95% ethanol solvent to reflux and extract twice, and the extraction time is 1 hour each time, combine the extracts, filter, and concentrate under reduced pressure to obtain a concentrate.
[0043]2) Suspend the concentrate obtained in step 1) with water, then undergo macroporous adsorption resin column chromatography, and then use ethanol-water (0:100, 60:40, 95:5) for gradient elution, and collect the eluted liquid, concentrated under reduced pressure to obtain a concentrated solution containing prenyl flavones.
[0044] 3) Pass the concentrated solution containing prenyl flavones through silica gel column chromatography, petroleum ether-ethyl acetate (100: 0, 95: 5, 9: 1, 8: 2, 7: 3, 6: 4, 1:1) and 10 fractions were obtained.
[0045] 4) The fifth fraction obtained in step 3...
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