Young, Desmond A.; Kolodziej, Herbert; Ferreira, Daneel, Journal of the Chemical Society. Perkin transactions I, 1985, p. 2537 - 2544
作者:Young, Desmond A.、Kolodziej, Herbert、Ferreira, Daneel、Roux, David G.
DOI:——
日期:——
Synthesis of condensed tannins. Part 4. A direct biomimetic approach to [4,6]- and[4,8]-biflavanoids
作者:Jacobus J. Botha、Daneel Ferreira、David G. Roux
DOI:10.1039/p19810001235
日期:——
their condensation with nucleophilic flavan-3-ols to form [4,6]- and [4,8]-biflavanoids at ambient temperatures and under mildly acidic aqueous conditions apparently simulates the initial step in condensedtannin formation in a number of natural sources. The stereospecificity (or stereoselectivity) of the reaction is conditioned mainly by the 2,3-cis or 2,3-trans stereochemistry of the parent flavan-3