Biflavonoids, part 4. Structure and stereochemistry of novel flavanone- and the first isoflavanone-benzofuranone biflavonoids

Authors
Bekker, R Brandt, EV Ferreira, D
Citation
R. Bekker et al., Biflavonoids, part 4. Structure and stereochemistry of novel flavanone- and the first isoflavanone-benzofuranone biflavonoids, TETRAHEDRON, 55(33), 1999, pp. 10005-10012
Citations number
12
Categorie Soggetti
Chemistry & Analysis","Organic Chemistry/Polymer Science
Journal title
TETRAHEDRON
ISSN journal
00404020 → ACNP
Volume
55
Issue
33
Year of publication
1999
Pages
10005 - 10012
Database
ISI
SICI code
0040-4020(19990813)55:33<10005:BP4SAS>2.0.ZU;2-C
Abstract
The structure and stereochemistry of (2R,3S)-naringenin-(3 alpha-->5)-(2R)- maesopsin its isoflavanone analogue, (2S,3R)-dibydrogenistein-(2 alpha-->7) -(2R )-maesopsin, and the 2S (F-ring) diastereomers of both compounds from the heartwood of Berchemia zeyheri were established by H-1 NMR and CD data. The isoflavanone analogues represent the first isoflavanone-benzofuranone biflavonoids. (C) 1999 Elsevier Science Ltd. All rights reserved.