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]
References
- ^ Steynberg, Jan P.; Ferreira, Daneel; Roux, David G. (1987). "Synthesis of condensed tannins. Part 18. Stilbenes as potent nucleophiles in regio- and stereo-specific condensations: Novel guibourtinidol-stilbenes from Guibourtia coleosperma". Journal of the Chemical Society, Perkin Transactions 1: 1705–1712. doi:10.1039/P19870001705.
- ^ Malan, Elfranco; Swinny, Ewald; Ferreira, Daneel; Steynberg, Petrus (1996). "The structure and synthesis of proguibourtinidins from Cassia abbreviata". Phytochemistry. 41 (4): 1209–1213. Bibcode:1996PChem..41.1209M. doi:10.1016/0031-9422(95)00656-7.
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