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    Author(s): Richard W. Hemingway; Weiling Peng; Anthony H. Conner; Petrus J. Steynberg; Jan P. Steynberg
    Date: 1998
    Source: olyphenols Communications 98; XIXth international conference on polyphenols; volume 1; 1998 September 1-4; Lille, France.Bordeaux Cedex, France: Groupe Polyphenols: 191-192.
    Publication Series: Miscellaneous Publication
    PDF: View PDF  (95 KB)

    Description

    The objective of this work was to define reactions that occur when proanthocyanidins and their derivatives are reacted in the presence of acid catalysts. Pure compounds (either as the free phenols, the methyl ether, or the methyl ether-acetate derivatives) were isolated by a variety of chromatographic methods. Proof of their structure was based mainly on 2D-NMR, as well as high-resolution MS and CD experiments. This publication summarizes some of the results of these experiments.

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    Citation

    Hemingway, Richard W.; Peng, Weiling; Conner, Anthony H.; Steynberg, Petrus J.; Steynberg, Jan P. 1998. Acid-catalyzed rearrangements of flavans to novelbenzofuran derivatives. olyphenols Communications 98; XIXth international conference on polyphenols; volume 1; 1998 September 1-4; Lille, France.Bordeaux Cedex, France: Groupe Polyphenols: 191-192.

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