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2 108 803

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IPC

(21) (22)

Application

97105437/13, 1997-04-08

(22)

Actual filing date

1997-04-08

(45)

Published

1998-04-20

(72)

Inventor

Raldugin V.A.Druganov A.G.Klimov V.P.Shubin A.N.Chekurov V.M.

(73)

Holder

Novosibirskij Institut Organicheskoj Khimii Sibirskogo Otdelenija RanGosudarstvennoe Predprijatie Proizvodstvennoe Ob"Edinenie Zavod"Institut Tsitologii I Genetiki Sibirskogo Otdelenija Ran

METHOD OF PREPARING TRITERPENIC ACID BIOLOGICALLY ACTIVE CONTENT Russian patent published in 1998 - IPC

Abstract RU 2108803 C1

FIELD: organic chemistry, biotechnology. SUBSTANCE: invention relates to methods of isolation of biologically active content of natural compounds. Dried and milled fir wood green is extracted with tert.-butylmethyl ester, extract is treated with alkaline agent an aqueous solution, an aqueous-alkaline solution is separated and acidified to pH = 2. The end product is isolated from this solution by extraction with tert.-butylmethyl ester. EFFECT: simplified method, improved effectiveness. 2 dwg

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RU 2 108 803 C1

Authors

Raldugin V.A.

Druganov A.G.

Klimov V.P.

Shubin A.N.

Chekurov V.M.

Dates

1998-04-20—Published

1997-04-08—Filed