Spectroscopic properties of free phenolic 4-arylflavan-3-ols as models for natural condensed tannins

A unique range of free phenolic 4‐arylflavan‐3‐ols consisting of four sets (3′,4′,5,7‐tetrahydroxyflavan‐3‐ol or its 5‐deoxy analogue coupled to phloroglucinol or resorcinol), each composed of three diastereomers (2,3‐trans‐3,4‐trans, 2,3‐trans‐3,4‐cis and 2,3‐cis‐3,4‐trans) were synthesized to asse...

Ausführliche Beschreibung

Gespeichert in:

Bibliographische Detailangaben
Veröffentlicht in:	Magnetic resonance in chemistry 1993-12, Vol.31 (12), p.1057-1063
Hauptverfasser:	Van Zyl, Pieter W., Steynberg, Jan P., Brandt, Edward V., Ferreira, Daneel
Format:	Artikel
Sprache:	eng
Schlagworte:	13C NMR 1H NMR 4-Arylflavan-3-ols Atomic and molecular physics Circular dichroism Condensed tannins Exact sciences and technology Molecular properties and interactions with photons Nuclear resonance and relaxation Physics
Online-Zugang:	Volltext
Tags:	Tag hinzufügen Keine Tags, Fügen Sie den ersten Tag hinzu!

Beschreibung
Zusammenfassung:	A unique range of free phenolic 4‐arylflavan‐3‐ols consisting of four sets (3′,4′,5,7‐tetrahydroxyflavan‐3‐ol or its 5‐deoxy analogue coupled to phloroglucinol or resorcinol), each composed of three diastereomers (2,3‐trans‐3,4‐trans, 2,3‐trans‐3,4‐cis and 2,3‐cis‐3,4‐trans) were synthesized to assess their spectroscopic properties. 1H and 13C NMR and circular dichroism data are related to selected structural and stereochemical features with a view to modelling natural phenolic oligoflavanoids.
ISSN:	0749-1581 1097-458X
DOI:	10.1002/mrc.1260311206