Diastereomeric stilbene glucoside dimers from the bark of Norway spruce (Picea abies) |
| |
Authors: | Li Sheng-Hong Niu Xue-Mei Zahn Stefan Gershenzon Jonathan Weston Jennie Schneider Bernd |
| |
Affiliation: | Max Planck Institute for Chemical Ecology, Beutenberg Campus, Hans-Kn?ll-Strabe 8, D-07745 Jena, Germany. |
| |
Abstract: | As part of a long-term study of the chemical defenses of Norway spruce (Picea abies) against herbivores and pathogens, a phytochemical survey of the phenolics in the bark was carried out. Eight stilbene glucoside dimers, designated as piceasides A-H (1a-4b), were isolated as four 1:1 mixtures of inseparable diastereomers. Their structures were determined by extensive spectroscopic means including 1D (1H and 13C) and 2D NMR (1H-1H COSY, HSQC, HMBC, ROESY) spectra, and were supported by enzymatic hydrolysis and computational analysis. |
| |
Keywords: | Norway spruce Picea abies Bark Stilbene glucoside dimers Piceasides A-H Diastereomers |
本文献已被 ScienceDirect PubMed 等数据库收录! |
|