Oenothein B, a dimeric, hydrolysable tannin with macrocyclic structure, and accompanying tannins from Oenothera erythrosepala
Authors:
- Tsutomu HatanoTsutomu Hatano
- Taeko YasuharaTYTaeko Yasuhara
- Muneto MatsudaMMMuneto Matsuda
- Kazufumi YazakiKYKazufumi Yazaki
- Takashi YoshidaTYTakashi Yoshida
- Takuo OkudaTOTakuo Okuda
- 1 January 1990
- journal article
- research article
- Published by Royal Society of Chemistry (RSC) in Journal of the Chemical Society, Perkin Transactions 1
- No. 10,p. 2735-2743
Abstract
A new dimeric, hydrolysable tannin which we have named oenothein B (1), and eight accompanying compounds, including oenothein C (2), were isolated from the leaves of Oenothera erythrosepala. The macrocyclic structure of compound (1) was established from chemical and spectroscopic data. The previously assigned structure of compound (2) was also confirmed by two-dimensional NMR spectroscopy.Keywords
This publication has 2 references indexed in Scilit:
- Tannins of cornaceous plants. I. Cornusiins A, B and C, dimeric monomeric and trimeric hydrolyzable tannins from Cornus officinalis, and orientation of valoneoyl group in related tannins.Chemical and Pharmaceutical Bulletin, 1989
- Chromatography of tanninsJournal of Chromatography A, 1989