Structure of isorugosin b, and the orientation of valoneoyl group in the related monomeric, dimeric and trimeric hydrolyzable tannins

Tsutomu Hatano, Reiko Kira, Taeko Yasuhara, Takuo Okuda

Research output: Contribution to journalArticle

9 Citations (Scopus)

Abstract

A new hydrolyzable tannin, named isorugosin B (1), was isolated from Liquidambar formosana, and the structure in which the orientation of valoneoyl group at 0-4 ~ 0-6 of the glucose core is the reverse of that in rugosin B (2) and in rugosin A (3), was determined. The orientation of valoneoyl group in rugosin A (3) was established by the long range 1H13C correlation nmr spectroscopy. The structures of rugosins D (6), E (7) and G (8), coriariins C (9), D (10), E (11) and F (12), cornusiin A (13), camptothins A (b15) and B (16), were fully established on the basis of chemical correlations with 1 or 3.

Original languageEnglish
Pages (from-to)2081-2085
Number of pages5
JournalHeterocycles
Volume27
Issue number9
Publication statusPublished - Sep 1 1988

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Hydrolyzable Tannins
Liquidambar
Spectrum Analysis
Spectroscopy
Glucose
rugosin A
isorugosin B
cornusiin A

ASJC Scopus subject areas

  • Organic Chemistry

Cite this

Structure of isorugosin b, and the orientation of valoneoyl group in the related monomeric, dimeric and trimeric hydrolyzable tannins. / Hatano, Tsutomu; Kira, Reiko; Yasuhara, Taeko; Okuda, Takuo.

In: Heterocycles, Vol. 27, No. 9, 01.09.1988, p. 2081-2085.

Research output: Contribution to journalArticle

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