Biflavonoids. Part 5: Structure and stereochemistry of the first bibenzofuranoids

Authors
Bekker, R Ferreira, D Swart, KJ Brandt, EV
Citation
R. Bekker et al., Biflavonoids. Part 5: Structure and stereochemistry of the first bibenzofuranoids, TETRAHEDRON, 56(30), 2000, pp. 5297-5302
Citations number
11
Categorie Soggetti
Chemistry & Analysis","Organic Chemistry/Polymer Science
Journal title
TETRAHEDRON
ISSN journal
00404020 → ACNP
Volume
56
Issue
30
Year of publication
2000
Pages
5297 - 5302
Database
ISI
SICI code
0040-4020(20000721)56:30<5297:BP5SAS>2.0.ZU;2-2
Abstract
The rare series of biflavonoids with benzofuranoid constituent units is ext ended by identification of (2S)-2-deoxymaesopsin(2-->7)-(2R)-maesopsin, its 2R(C):2S(F)-enantiomer, (2R)-2-deoxymaesopsin-(2-->7)-(2R) -maesopsin, and its 2S(C):2S(F)-enantiomer. The collective use of chiral resolution, NMR, X-ray analysis, CD and molecular modeling permit definition of the absolute configuration of all four stereoisomers. (C) 2000 Elsevier Science Ltd. Al l rights reserved.