A kind of preparation method and application of 2-acetylfuran
A technology of acetylfuran and its use, which is applied in the field of preparation of 2-acetylfuran, can solve the problems of unpredictable non-target organisms, exposure of drug resistance, etc., and achieve the effects of abundant raw materials, labor cost saving, and low cost
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Embodiment 1
[0026] 1) Extraction of volatile oil: Take the dried aboveground part of Baisu, crush it, place it in a volatile oil extractor, extract it by steam distillation for 6 hours, and dry it with anhydrous sodium sulfate to obtain volatile oil. The volatile oil was stored in the fresh-keeping room of the refrigerator at 4°C for later use. The yield of volatile oil was 0.24%.
[0027] 2) Separation of compounds: 10ml of white perilla volatile oil was subjected to normal-phase silica gel (160-200 mesh) column chromatography, the silica gel column specification was 50mm×500mm, and eluted with 5 gradients, and 5 flow segments were obtained for each gradient. Each stream was segmented into 200 mL, and the solvent was recovered under reduced pressure at 35°C. The five gradients are n-hexane, n-hexane-ethyl acetate 80:1, n-hexane-ethyl acetate 50:1, n-hexane-ethyl acetate 20:1, ethyl acetate. 25 fractions were obtained, and fraction 9 was separated by normal phase silica gel column chrom...
Embodiment 2
[0029] 1) Extraction of volatile oil: take the dried aerial part of Baisu, crush it, place it in a volatile oil extractor, extract it by steam distillation for 5 hours, and dry it with anhydrous sodium sulfate to obtain volatile oil. The volatile oil was stored in the fresh-keeping room of the refrigerator at 4°C for later use. The yield of volatile oil is 0.20%.
[0030] 2) Separation of compounds: 20ml of white perilla volatile oil was subjected to normal phase silica gel (160-200 mesh) column chromatography, the silica gel column specification was 50mm×500mm, eluted with 5 gradients, each gradient obtained 5 flow segments, each Each stream was segmented into 200 mL, and the solvent was recovered under reduced pressure at 35°C. The five gradients are n-hexane, n-hexane-ethyl acetate 80:1, n-hexane-ethyl acetate 50:1, n-hexane-ethyl acetate 20:1, ethyl acetate. 25 fractions were obtained, and fraction 9 was separated by normal phase silica gel column chromatography to obtai...
Embodiment 3
[0032] 1) Extraction of volatile oil: Take the dried aboveground part of Baisu, crush it, place it in a volatile oil extractor, extract it by steam distillation for 7 hours, and dry it with anhydrous sodium sulfate to obtain volatile oil. The volatile oil was stored in the fresh-keeping room of the refrigerator at 4°C for later use. The yield of volatile oil is 0.30%.
[0033] 2) Compound separation: 8ml of white perilla volatile oil was subjected to normal phase silica gel (160-200 mesh) column chromatography, the silica gel column specification was 50mm×500mm, eluted with 5 gradients, and 5 flow segments were obtained for each gradient. Each stream was segmented into 200 mL, and the solvent was recovered under reduced pressure at 35°C. The five gradients are n-hexane, n-hexane-ethyl acetate 80:1, n-hexane-ethyl acetate 50:1, n-hexane-ethyl acetate 20:1, ethyl acetate. 25 fractions were obtained, and fraction 9 was separated by normal phase silica gel column chromatography ...
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