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

31 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

All Science Journal Classification (ASJC) codes

  • Chemistry(all)
  • Drug Discovery

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