Oligomeric Flavanoids. Part 28. Structure and Synthesis of Ether-linked (4-O-3)-Bis-teracacidins, a Novel Class of Naturally Occurring Proanthocyanidins

(Note: The full text of this document is currently only available in the PDF Version )

Johan Coetzee, Elfranco Malan and Daneel Ferreira


The range of natural dimeric proteracacinidins is extended by identification of the first (4-O-3)-linked bis-teracacidins, epioritin-(4β→3)-epioritin-4α-ol 13 and epioritin-(4β→3)-oritin-4α-ol 16 in the heartwood extract of Acacia galpinii.


References

  1. L. J. Porter, in The Flavonoids Advances in Research since 1980, ed. J. B. Harborne, Chapman and Hall, London, 1988, p. 21 Search PubMed; and in The Flavonoids Advances in Research since 1986, ed. J. B. Harborne, Chapman and Hall, London, 1994, p. 23 Search PubMed.
  2. L. Y. Foo, J. Chem. Soc., Chem. Commun., 1989, 1505 RSC.
  3. P. J. Steynberg, J. P. Steynberg, E. V. Brandt, D. Ferreira and R. W. Hemingway, J. Chem. Soc., Perkin Trans. 1, 1997, 1943 RSC.
  4. J. J. Botha, D. Ferreira and D. G. Roux, J. Chem. Soc., Chem. Commun., 1978, 700 RSC; J. Chem. Soc., Perkin Trans. 1, 1981, 1235 Search PubMed.
  5. E. Malan and A. Sireeparsad, Phytochemistry, 1995, 38, 237 CrossRef CAS.
  6. E. Malan, Phytochemistry, 1995, 40, 1519 CrossRef CAS.