Magnetic Resonance in Chemistry p. 1057 - 1063 (1993)
Update date:2022-07-31
Topics:
Zyl, Pieter W. van
Steynberg, Jan P.
Brandt, Edward V.
Ferreira, Daneel
A unique range of free phenolic 4-arylflavan-3-ols consisting of four sets (3',4',5,7-tertrahydroxyflavan-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. - Key words: 4-Arylflavan-3-ols 1H NMR 13C NMR Circular dichroism Condensed tannins
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