A-type proanthocyanidins from the bark of Parameria laevigata

Kohei Kamiya, Akiko Ohno, Yukiko Horii, Endang Hanani, Umar Mansur, Toshiko Satake

Research output: Contribution to journalArticle

9 Citations (Scopus)

Abstract

Parameritannin A-3, a new tetrameric A-type proanthocyanidin, along with the cinnamtannin B-2, pavetannin C-1 and cinnamtannin D-1 have been isolated from the bark of Parameria laevigata. Complete assignments by spectroscopic analysis established their structures as epicatechin - (2β→O→7, 4β→6) epicatechin - (2β→O→7, 4β→8) - epicatechin - (4β→8) - epicatechin, epicatechin(4β→8)-epicatechin-(2β→O→7, 4β→8)-epicatechin-(4β→8)-epicatechin, epicatechin(4β→6)-epicatechin-(2β→O→7, 4β→8)-epicatechin-(4β→8)-epicatechin, epicatechin-(2β→O→7, 4β→8)-epicatechin-(4β→8)-epicatechin-(4β→8)- catechin, respectively.

Original languageEnglish
Pages (from-to)1697-1708
Number of pages12
JournalHeterocycles
Volume60
Issue number7
Publication statusPublished - 1 Jul 2003

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