Structural and conformational analysis of two native procyanidin trimers
| Autor: | Marie-Agnès Ducasse, Erick J. Dufourc, Isabelle Tarascou, Michel Laguerre, Eric Fouquet, Isabelle Pianet, Detlef Moskau |
|---|---|
| Přispěvatelé: | Chimie et Biologie des Membranes et des Nanoobjets (CBMN), Université de Bordeaux (UB)-École Nationale d'Ingénieurs des Travaux Agricoles - Bordeaux (ENITAB)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS) |
| Rok vydání: | 2007 |
| Předmět: |
Models
Molecular Magnetic Resonance Spectroscopy Carbon atom Polymers 010405 organic chemistry Stereochemistry Chemistry Stacking General Chemistry 010402 general chemistry 01 natural sciences Catechin 0104 chemical sciences Crystallography Proanthocyanidin Carbohydrate Conformation Biflavonoids Proanthocyanidins General Materials Science Conformational isomerism Two-dimensional nuclear magnetic resonance spectroscopy |
| Zdroj: | Magnetic Resonance in Chemistry Magnetic Resonance in Chemistry, Wiley, 2007, 45, pp.157-166 |
| ISSN: | 1097-458X 0749-1581 |
| DOI: | 10.1002/mrc.1938 |
| Popis: | The structure and conformation of two native procyanidin trimers in water have been determined using 2D NMR and molecular mechanics. The results show the existence of four rotameric forms, one of which is predominant (60 to 80%). These four rotamers are shown to be in slow to intermediate exchange on the NMR timescale. Both trimers, whose structures vary owing to a different substitution of one carbon atom, adopt conformations in which stacking between different phenolic rings is favored. Copyright © 2006 John Wiley & Sons, Ltd. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
Plný text