JPS5692283A - Novel biscatechin derivative - Google Patents
Novel biscatechin derivativeInfo
- 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
Links
Landscapes
- 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
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)
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 |
-
1979
- 1979-12-26 JP JP17312079A patent/JPS5692283A/en active Pending
Cited By (2)
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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