FIELD: medicine, natural compounds.
SUBSTANCE: larch wood is saturated with water and extraction with ethyl acetate is carried out. Prepared extract is treated with hot water and this process is combined with distilling off a solvent. Then water-insoluble resin impurities are separated and crude product is isolated by crystallization and recrystallized. Invention provides simplifying the process.
EFFECT: improved preparing method.
2 ex
| Title | Year | Author | Number |
|---|---|---|---|
| METHOD OF PREPARING DIQUERTIN AS A NEW PHYTOPREPARATION WITH GENERAL-PURPOSE THERAPEUTIC EFFECT | 1998 |
|
RU2174403C2 |
| METHOD OF PREPARING DIHYDROQUERCETIN | 1998 |
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| METHOD OF PREPARING HIGHLY PURE ARABINOGALACTANE | 1998 |
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| METHOD OF DIHYDROQUERCETIN PRODUCTION | 2007 |
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| METHOD FOR PRODUCING OF BIOLOGICALLY ACTIVE PREPARATION FROM LARCH WOOD | 2005 |
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| METHOD FOR PRODUCING OF BIOLOGICALLY ACTIVE PREPARATION | 2002 |
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| METHOD TO PRODUCE ARABINOGALACTANE | 2008 |
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| METHOD OF PRODUCING ARABINOGALACTAN | 2010 |
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RU2454429C2 |
| METHOD FOR INTEGRATED PROCESSING OF LARCH WOOD, METHOD FOR ISOLATION OF BIOFLAVANOIDS, AND METHOD FOR ISOLATION OF ARABINOGALACTAN OBTAINED DURING INTEGRATED PROCESSING | 2003 |
|
RU2229490C1 |
