JPS5692283A - Novel biscatechin derivative - Google Patents

Novel biscatechin derivative

Info

Publication number
JPS5692283A
JPS5692283A JP17312079A JP17312079A JPS5692283A JP S5692283 A JPS5692283 A JP S5692283A JP 17312079 A JP17312079 A JP 17312079A JP 17312079 A JP17312079 A JP 17312079A JP S5692283 A JPS5692283 A JP S5692283A
Authority
JP
Japan
Prior art keywords
water
solvents
biscatechin
galloyl
derivative
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP17312079A
Other languages
Japanese (ja)
Inventor
Itsuo Nishioka
Genichiro Nonaka
Yukihiro Masayama
Hikokichi Oura
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hisamitsu Pharmaceutical Co Inc
Original Assignee
Hisamitsu Pharmaceutical Co Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Hisamitsu Pharmaceutical Co Inc filed Critical Hisamitsu Pharmaceutical Co Inc
Priority to JP17312079A priority Critical patent/JPS5692283A/en
Publication of JPS5692283A publication Critical patent/JPS5692283A/en
Pending legal-status Critical Current

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  • Pyrane Compounds (AREA)

Abstract

NEW MATERIAL:A compound of the formula (A is H or acetyl; R is galloyl, triacetylgalloyl, acetyl or H).
EXAMPLE: [4,8']-Bis-3-0-galloyl(-)-epicatechin.
USE: A medicine having an action on reducing the amount of urea nitrogen in blood and increasing the amount of cholesterol in blood.
PROCESS: A rhubarb is extracted with water, methanol, ethanol or acetone, and the extract is fractionated by the partition between solvents and column chromatography and purified to isolate the compound of the formula. For the partition between the solvents, water and ethyl acetate, chloform or/and butanol are used. Silica gel, polyamide, Sephadex LH-20, etc. are suitably used as a packing in the columun chromatography, and benzene, chloroform, acetone, methanol, ethanol or/and water are suitably used as the solvents according to the packing.
COPYRIGHT: (C)1981,JPO&Japio
JP17312079A 1979-12-26 1979-12-26 Novel biscatechin derivative Pending JPS5692283A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP17312079A JPS5692283A (en) 1979-12-26 1979-12-26 Novel biscatechin derivative

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP17312079A JPS5692283A (en) 1979-12-26 1979-12-26 Novel biscatechin derivative

Publications (1)

Publication Number Publication Date
JPS5692283A true JPS5692283A (en) 1981-07-25

Family

ID=15954503

Family Applications (1)

Application Number Title Priority Date Filing Date
JP17312079A Pending JPS5692283A (en) 1979-12-26 1979-12-26 Novel biscatechin derivative

Country Status (1)

Country Link
JP (1) JPS5692283A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4797421A (en) * 1984-07-03 1989-01-10 Kikkoman Corporation Antioxidant comprising proanthocyanidin as principal component
US4806659A (en) * 1985-03-08 1989-02-21 Kabushiki Kaisha Tsumura Juntendo Tannin compounds

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4797421A (en) * 1984-07-03 1989-01-10 Kikkoman Corporation Antioxidant comprising proanthocyanidin as principal component
US4806659A (en) * 1985-03-08 1989-02-21 Kabushiki Kaisha Tsumura Juntendo Tannin compounds

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