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(19)

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2 710 374

(13)

(51)

IPC

A61K41/00(2006-01-01)

A61K36/185(2006-01-01)

A61K129/00(2006-01-01)

C07J53/00(2006-01-01)

C07J63/00(2006-01-01)

B01D11/02(2006-01-01)

B01D9/02(2006-01-01)

(21) (22)

Application

2019116770, 2019-05-30

(24)

Start date

2019-05-30

(22)

Actual filing date

2019-05-30

(45)

Published

2019-12-26

(72)

Inventor

Korotkij Vasilij PavlovichKutakova Natalya AlekseevnaTretyakov Sergej IvanovichBogdanovich Nikolaj IvanovichRyzhova Elena SemenovnaRyzhov Viktor Anatolevich

(73)

Holder

Obshchestvo S Ogranichennoj Otvetstvennostyu Nauchno-Tekhnicheskij Tsentr

METHOD OF PRODUCING BETULIN Russian patent published in 2019 - IPC A61K41/00 A61K36/185 A61K129/00 C07J53/00 C07J63/00 B01D11/02 B01D9/02

Abstract RU 2710374 C1

FIELD: technological processes.

SUBSTANCE: invention relates to a method of producing betulin from birch bark for use in medicine and perfumery, involving UHF extraction of birch bark with propylene glycol at ratio of extractant : bark of 30:1, power of 300 W, duration of 10 minutes, followed by crystallization.

EFFECT: method provides higher efficiency of the process of producing betulin via reduction of technological operations, shorter duration of extraction of the end product, avoiding use of highly flammable alcohols.

1 cl, 2 tbl

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RU 2 710 374 C1

Authors

Korotkij Vasilij Pavlovich

Kutakova Natalya Alekseevna

Tretyakov Sergej Ivanovich

Bogdanovich Nikolaj Ivanovich

Ryzhova Elena Semenovna

Ryzhov Viktor Anatolevich

Dates

2019-12-26—Published

2019-05-30—Filed