A - Human Necessities – 61 – K
Patent
A - Human Necessities
61
K
A61K 36/15 (2006.01) A61K 31/09 (2006.01) A61K 31/353 (2006.01) B01D 11/02 (2006.01) C07B 63/00 (2006.01) C07C 41/34 (2006.01) C07D 311/28 (2006.01)
Patent
CA 2682143
The invention relates to extracting secoisolariciresinol and dihydroquercetin from wood. The inventive method consists in extracting disintegrating wood of a screen area by means of an non-splitting mixture of organic solvent and water, the solvent content ranging from 50 to 75%, in such a way that a secoisolariciresinol and dihydroquercetin-containing extract is obtained, and in processing said extract by removing the solvent in such a way that a final secoisolariciresinol and dihydroquercetin-containing mixture is obtained. In the other variant, the inventive method consists in extracting disintegrating wood of a screen area by means of a non-splitting mixture of organic solvent and water, the solvent content ranging from 50 to 75%, in such a way that a secoisolariciresinol and dihydroquercetin-containing extract is obtained, in processing said extract by removing the solvent in such a way that a final secoisolariciresinol and dihydroquercetin-containing mixture is obtained and in exposing the thus obtained mixture to selective extraction and crystallisation in such a way that secoisolariciresinol and dihydroquercetin are extracted. In the third variant, the inventive method consists in extracting disintegrating wood of a screen area by means of an non-splitting mixture of organic solvent and water, the solvent content ranging from 50 to 75%, in such a way that an secoisolariciresinol and dihydroquercetin-containing extract is obtained, in processing said extract by removing non-polar components, in removing supernatant liquid, in chromatographing the obtained residue on a silicagel layer and in removing an eluate in such a way that a dry secoisolariciresinol and dihydroquercetin mixture is obtained. The use of secoisolariciresinol and dihydroquercetin in the form of components of biologically active additives and chemical-pharmaceutical products is also disclosed.
L'invention concerne l'extraction de secoisolariciresinol et de dihydroquercétine à partir du bois. Selon le procédé de l'invention, du bois broyé provenant de la zone des branches est extrait au moyen d'un mélange non dissociable d'un solvant organique avec de l'eau, la teneur en solvant étant de 50 à 75%, de manière à obtenir un extrait contenant du secoisolariciresinol et de la dihydroquercétine. On traite l'extrait de manière à en évacuer le solvant pour obtenir un mélange final de secoisolariciresinol et dihydroquercétine. Dans un autre mode de réalisation, du bois broyé provenant de la zone des branches est extrait au moyen d'un mélange non dissociable d'un solvant organique avec de l'eau, la teneur en solvant étant de 50 à 75%, de manière à obtenir un extrait contenant du secoisolariciresinol et de la dihydroquercétine. On traite l'extrait de manière à en évacuer le solvant pour obtenir un mélange final de secoisolariciresinol et dihydroquercétine, ledit mélange étant soumis à une extraction sélective et une cristallisation, avec obtention de secoisolariciresinol et de dihydroquercétine. Dans un troisième mode de réalisation, du bois broyé provenant de la zone des branches est extrait au moyen d'un mélange non dissociable d'un solvant organique avec de l'eau, la teneur en solvant étant de 50 à 75%, de manière à obtenir un extrait contenant du secoisolariciresinol et de la dihydroquercétine. On traite l'extrait de manière à en éliminer des composants non polaires, à évacuer le liquide au-dessus du sédiment puis on chromatographie le résidu obtenu sur une couche de gel de silice; on élimine ensuite l'éluat et l'on obtient un mélange sec de secoisolariciresinol et de dihydroquercétine. L'invention concerne aussi l'utilisation de secoisolariciresinol et de dihydroquercétine sous forme de composants biologiquement actifs et d'articles chimiques et pharmaceutiques.
Menshov Vladimir Mikhailovich
Nifantiev Nikolay Eduardovich
Tsvetkov Dmitri Evgenievich
Tsvetkov Yury Evgenievich
Yashunsky Dmitri Vladimirovich
Nifantiev Nikolay Eduardovich
Smart & Biggar
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