发明名称 |
METHOD FOR ISOLATION OF BIOLOGICALLY ACTIVE DIHYDROQUERCETIN ISOMERS |
摘要 |
FIELD: chemical and pharmaceutical industry. ^ SUBSTANCE: ground larch wood is extracted with 90-95 % ethanol at 55-66°C for 1-2 h; extract is filtered; propylene glycol is added; mixture is boiled out; obtained rest is treated with 5 % sodium chloride solution in softened water at 20-30°C; and obtained resin is separated. Obtained flavonoid complex is eluted from column with 90-95 % ethanol; eluate is boiled out, precipitated with water cold to 0-2°C; deposited precipitate is crystallized, filtered, and dried. Obtained product representing bioflavonoid complex is ground followed by dissolving in methanol/water (10:90) mixture and subjected to reverse phase chromatography wherein as mobile phase beta-cyclodextrine solution in methanol/water (10:90) mixture is used, and column is cold to 0°C. Collected fractions of individual enantiomeres are boiled out and dried. ^ EFFECT: complex of increased purity. ^ 1 ex |
申请公布号 |
RU2308267(C1) |
申请公布日期 |
2007.10.20 |
申请号 |
RU20060113632 |
申请日期 |
2006.04.24 |
申请人 |
OTKRYTOE AKTSIONERNOE OBSHCHESTVO ZAVOD EHKOLOGICHESKOJ TEKHNIKI I EHKOPITANIJA "DIOD" |
发明人 |
TIKHONOV VLADIMIR PETROVICH;KOLESNIK JURIJ ARSEN'EVICH;SHMATKOV DMITRIJ ANATOL'EVICH;MAKAROV VALERIJ GENNADIEVICH;ZENKEVICH IGOR' GEORGIEVICH;ESHCHENKO ANNA JUR'EVNA |
分类号 |
A61K31/35 |
主分类号 |
A61K31/35 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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