Proguibourtinidin

A Proguibourtinidin is a type of condensed tannins formed from guibourtinidol (leucoguibourtinidin). They yield guibourtinidin when depolymerized under oxidative conditions.

They can be found in Guibourtia coleosperma (the African rosewood)[1] or in Cassia abbreviata.[2]

  1. ^ Synthesis of condensed tannins. Part 18. Stilbenes as potent nucleophiles in regio- and stereo-specific condensations: novel guibourtinidol-stilbenes from Guibourtia coleosperma, Jan P. Steynberg, Daneel Ferreira and David G. Roux, 1987
  2. ^ The structure and synthesis of proguibourtinidins from Cassia abbreviata, Elfranco Malan, , Ewald Swinny, Daneel Ferreira and Petrus Steynberg, 1996