Tannins and Related Compounds. Proanthocyanidins with a Doubly Linked Unit from the Root Bark of Cinnamomum sieboldii Meisner

Satoshi Morimoto, Gen ichiro Nonaka, Itsuo Nishioka

Research output: Contribution to journalArticle

30 Citations (Scopus)

Abstract

A proanthocyanidin trimer (1), two tetramers (2 and 3) and a pentamer (4) have been isolated from the root bark of Cinnamomum sieboldii Meisner (Lauraceae). The structures of these compounds were established by acid-catalyzed thiolytic degradation, in conjunction with proton and carbon-13 nuclear magnetic resonance analyses. In addition, the presence of (-)-epicatechin (13), (+)-catechin (14) and known proanthocyanidins B-1 (5), B-2 (6) and B-5 (7), trimers (8 and 9), tetramers (10 and 11) and a pentamer (12) in this plant was demonstrated.

Original languageEnglish
Pages (from-to)4338-4345
Number of pages8
JournalChemical and Pharmaceutical Bulletin
Volume33
Issue number10
DOIs
Publication statusPublished - Jan 1 1985

Fingerprint

Cinnamomum
Proanthocyanidins
Catechin
Tannins
Lauraceae
Protons
Magnetic Resonance Spectroscopy
Carbon
Nuclear magnetic resonance
Degradation
Acids

All Science Journal Classification (ASJC) codes

  • Chemistry(all)
  • Drug Discovery

Cite this

Tannins and Related Compounds. Proanthocyanidins with a Doubly Linked Unit from the Root Bark of Cinnamomum sieboldii Meisner. / Morimoto, Satoshi; Nonaka, Gen ichiro; Nishioka, Itsuo.

In: Chemical and Pharmaceutical Bulletin, Vol. 33, No. 10, 01.01.1985, p. 4338-4345.

Research output: Contribution to journalArticle

@article{ca62b45e0b0f4bdba75d879f489774d8,
title = "Tannins and Related Compounds. Proanthocyanidins with a Doubly Linked Unit from the Root Bark of Cinnamomum sieboldii Meisner",
abstract = "A proanthocyanidin trimer (1), two tetramers (2 and 3) and a pentamer (4) have been isolated from the root bark of Cinnamomum sieboldii Meisner (Lauraceae). The structures of these compounds were established by acid-catalyzed thiolytic degradation, in conjunction with proton and carbon-13 nuclear magnetic resonance analyses. In addition, the presence of (-)-epicatechin (13), (+)-catechin (14) and known proanthocyanidins B-1 (5), B-2 (6) and B-5 (7), trimers (8 and 9), tetramers (10 and 11) and a pentamer (12) in this plant was demonstrated.",
author = "Satoshi Morimoto and Nonaka, {Gen ichiro} and Itsuo Nishioka",
year = "1985",
month = "1",
day = "1",
doi = "10.1248/cpb.33.4338",
language = "English",
volume = "33",
pages = "4338--4345",
journal = "Chemical and Pharmaceutical Bulletin",
issn = "0009-2363",
publisher = "The Pharmaceutical Society of Japan",
number = "10",

}

TY - JOUR

T1 - Tannins and Related Compounds. Proanthocyanidins with a Doubly Linked Unit from the Root Bark of Cinnamomum sieboldii Meisner

AU - Morimoto, Satoshi

AU - Nonaka, Gen ichiro

AU - Nishioka, Itsuo

PY - 1985/1/1

Y1 - 1985/1/1

N2 - A proanthocyanidin trimer (1), two tetramers (2 and 3) and a pentamer (4) have been isolated from the root bark of Cinnamomum sieboldii Meisner (Lauraceae). The structures of these compounds were established by acid-catalyzed thiolytic degradation, in conjunction with proton and carbon-13 nuclear magnetic resonance analyses. In addition, the presence of (-)-epicatechin (13), (+)-catechin (14) and known proanthocyanidins B-1 (5), B-2 (6) and B-5 (7), trimers (8 and 9), tetramers (10 and 11) and a pentamer (12) in this plant was demonstrated.

AB - A proanthocyanidin trimer (1), two tetramers (2 and 3) and a pentamer (4) have been isolated from the root bark of Cinnamomum sieboldii Meisner (Lauraceae). The structures of these compounds were established by acid-catalyzed thiolytic degradation, in conjunction with proton and carbon-13 nuclear magnetic resonance analyses. In addition, the presence of (-)-epicatechin (13), (+)-catechin (14) and known proanthocyanidins B-1 (5), B-2 (6) and B-5 (7), trimers (8 and 9), tetramers (10 and 11) and a pentamer (12) in this plant was demonstrated.

UR - http://www.scopus.com/inward/record.url?scp=0022389110&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0022389110&partnerID=8YFLogxK

U2 - 10.1248/cpb.33.4338

DO - 10.1248/cpb.33.4338

M3 - Article

AN - SCOPUS:0022389110

VL - 33

SP - 4338

EP - 4345

JO - Chemical and Pharmaceutical Bulletin

JF - Chemical and Pharmaceutical Bulletin

SN - 0009-2363

IS - 10

ER -