Tannins and Related Compounds. LXI.1) Isolation and Structures of Novel Bi- and Triflavanoids from the Leaves of Cassia fistula L.

Satoshi Morimoto, Gen Ichiro Nonaka, Rong Fu Chen, Itsuo Nishioka

Research output: Contribution to journalArticle

51 Citations (Scopus)

Abstract

Together with (—)-epiafzelechin (1) and its 3-0-glucoside (4), (—)-epicatechin (2) and procyanidin B-2 (3), seven new biflavanoids (5—7, 9—12) and two triflavanoids (8, 13) have been isolated from the leaves of Cassia fistula L. (Leguminosae). On the basis of chemical and spectroscopic evidence, the structures of 5—8 were established to be proanthocyanidins each having (—)-epiafzelechin unit(s) in the molecule, while 9—13 were shown to consist of (2S)-7, 4’-dihydroxyflavan and (—)-epiafzelechin units.

Original languageEnglish
Pages (from-to)39-47
Number of pages9
JournalChemical and Pharmaceutical Bulletin
Volume36
Issue number1
DOIs
Publication statusPublished - Jan 1 1988

All Science Journal Classification (ASJC) codes

  • Chemistry(all)
  • Drug Discovery

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