著者
野中 源一郎 松本 陽子 西岡 五夫
出版者
公益社団法人日本薬学会
雑誌
Chemical & pharmaceutical bulletin (ISSN:00092363)
巻号頁・発行日
vol.29, no.4, pp.1184-1187, 1981-04-25

A novel hydrolyzable tannin named trapain has been isolated from Trapa japonica FLEROV. (Oenotheraceae), and the structure has been established as II on the basis of the spectroscopic and chemical evidences.
著者
野中 源一郎 原田 美沙子 西岡 五夫
出版者
公益社団法人日本薬学会
雑誌
Chemical & pharmaceutical bulletin (ISSN:00092363)
巻号頁・発行日
vol.28, no.2, pp.685-687, 1980-02-25
被引用文献数
2

A new ellagitannin, eugeniin was isolated from cloves, the dried flower buds of Eugenia caryophyllata THUNB., and the structure was determined to be 1,2,3-trigalloyl 4,6-hexahydroxydiphenoyl β-D-glucopyranose.
著者
柏田 良樹 森田 益史 野中 源一郎 西岡 五夫
出版者
The Pharmaceutical Society of Japan
雑誌
Chemical and Pharmaceutical Bulletin (ISSN:00092363)
巻号頁・発行日
vol.38, no.4, pp.856-860, 1990-04-25 (Released:2008-03-31)
参考文献数
13
被引用文献数
11 15

A chemical examination of the polyphenolic constituents of the fern, Dicranopteris pedata HOUTT., has led to the isolation of eight new proanthocyanidins possessing a doubly-linked (A-type) unit, together with known flavan-3-ols and proanthocyanidins. On the basis of chemical and spectroscopic evidence, they are characterized as epiafzelechin-(4β→8, 2β→O→7)-eniafzelechin-(4α→8)-epiafzelechin(8), epicatechin-(4β→8, 2β→O→7)-epiafzelechin-(4α→8)-epiafzelechin(9), epiafzelechin-(4β→8, 2β→O→7)-epizfzelechin-(4α→8)-epicatechin(10), epiafzelechin-(4β→8, 2β→O→7)-epicatechin-(4α→8)-epicatechin (11), epicatechin-(4β→8, 2β→O→7)-epiafzelechin-(4α→8)-epicatechin (12), epicatechin-(4β→8, 2β→O→7)-epicatechin-(4α→8)-epiafzelechin (13), epicatechin-(4β→8, 2β→O→7)-epicatechin-(4α→8)-epigallocatechin (14) and epiafzelechin-(4β→8)epicatechin-(4β→8, 2β→O→β→7)-epicatechin-(4α→8)-epicatechin (15).