STRUCTURE AND SYNTHESIS OF PHLOBATANNINS RELATED TO THE (4-ALPHA,6 4-BETA,8)-BIS-FISETINIDOL-CATECHIN PROFISETINIDIN TRIFLAVANOID

Authors
BONNET SL STEYNBERG JP BEZUIDENHOUDT BCB SAUNDERS CM FERREIRA D
Citation
Sl. Bonnet et al., STRUCTURE AND SYNTHESIS OF PHLOBATANNINS RELATED TO THE (4-ALPHA,6 4-BETA,8)-BIS-FISETINIDOL-CATECHIN PROFISETINIDIN TRIFLAVANOID, Phytochemistry, 43(1), 1996, pp. 241-251
Citations number
15
Categorie Soggetti
Plant Sciences
Journal title
Phytochemistry → ACNP
ISSN journal
00319422
Volume
43
Issue
1
Year of publication
1996
Pages
241 - 251
Database
ISI
SICI code
0031-9422(1996)43:1<241:SASOPR>2.0.ZU;2-3
Abstract
The natural class of phlobaphene condensed tannins is complemented by two functionalized hexahydrodipyrano[2,3-f:2',3'-h]chromene representi ng the products of stereoselective pyran ring rearrangement of the 2,3 -trans-3,4-trans- and 2,3-trans-3,4-cis-flavan-3-ol moieties in the bi s-fisetinidol-(4 alpha,6:4 beta,8)-catechin triflavanoid. Structural e ludication of these complex natural products was effected by synthesis via base-catalysed conversion of the 4-O(E)-methyl ether of their pre sumed profisetinidin triflavanoid precursor. Copyright (C) 1996 Elsevi er Science Ltd