A kind of preparation method of 2'-hydroxy pterophyll
A technology of fern and hydroxyl, which is applied in the field of preparation of 2'-hydroxy fernol, which achieves the effects of less pollution, favorable large-scale production operations, and low energy consumption
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Embodiment 1
[0025] Take 10Kg of rhizome of oriental viburnum, crush it, add 80L of ethanol with a concentration of 50%, put it into a microwave extraction device for microwave extraction, extraction power 300W, extract once, 3 minutes, combine the extracts, filter, and recover ethanol under reduced pressure And concentrated, added to HPD-700 macroporous adsorption resin column, eluted with 30% ethanol, collected 3 times the column volume of eluent, recovered ethanol under reduced pressure and concentrated, added to nylon 6 (polycaprolactam) On the polyamide chromatography column, the dichloromethane-methanol mixed solvent with a ratio of 5:3 was used as the eluent to elute, and the same type of polyamide film was developed with the above eluent as a supporting detection, and the corresponding polyamide was collected. For fractions with Rf=4-5 on the film, the solvent was recovered under reduced pressure, methanol was added to crystallize, the crystals were separated, washed and dried to ob...
Embodiment 2
[0027] Take 10Kg of oriental pod fern rhizome, crush it, add 120L of ethanol with a concentration of 70%, put it into a microwave extraction device for microwave extraction, extraction power 600W, extract 3 times, each time for 10 minutes, combine the extracts, filter, and reduce pressure Recover ethanol and concentrate, add to H-50 macroporous adsorption resin column, elute with 50% ethanol, collect eluate with 8 times the column volume, recover ethanol under reduced pressure and concentrate, add to nylon 66 (polyhexane Hexamethylene diamide) polyamide chromatography column, elute with dichloromethane-methanol mixed solvent with a ratio of 5:3 as eluent, use the same type of polyamide film to develop with the above eluent as a supporting detection, Collect the fractions corresponding to Rf=4-5 on the polyamide film, recover the solvent under reduced pressure, add methanol to crystallize, separate the crystals, wash and dry to obtain 20.3g of 2'-hydroxypterinol, which was detec...
Embodiment 3
[0029] Take 10Kg of oriental pod fern rhizome, crush it, add 100L of ethanol with a concentration of 60%, put it into a microwave extraction device for microwave extraction, extraction power is 500W, extract twice, each time for 8 minutes, combine the extracts, filter, and decompress Recover ethanol and concentrate, add to CD-180 macroporous adsorption resin column, elute with 40% ethanol, collect eluate with 5 times the column volume, recover ethanol under reduced pressure and concentrate, add to nylon 66 (polyhexane Hexamethylene diamide) polyamide chromatography column, elute with dichloromethane-methanol mixed solvent with a ratio of 5:3 as eluent, use the same type of polyamide film to develop with the above eluent as a supporting detection, Collect the fractions corresponding to Rf=4-5 on the polyamide film, recover the solvent under reduced pressure, add methanol to crystallize, separate the crystals, wash and dry to obtain 18.9g of 2'-hydroxypterinol, which was detected...
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