C-glycosidic flavonoids from Cassia occidentalis

Authors
Hatano, T Mizuta, S Ito, H Yoshida, T
Citation
T. Hatano et al., C-glycosidic flavonoids from Cassia occidentalis, PHYTOCHEM, 52(7), 1999, pp. 1379-1383
Citations number
10
Categorie Soggetti
Agricultural Chemistry","Animal & Plant Sciences
Journal title
PHYTOCHEMISTRY
ISSN journal
00319422 → ACNP
Volume
52
Issue
7
Year of publication
1999
Pages
1379 - 1383
Database
ISI
SICI code
0031-9422(199912)52:7<1379:CFFCO>2.0.ZU;2-W
Abstract
Three new C-glycosidic flavonoids, cassiaoccidentalins A, B and C, were iso lated from aerial parts of Cassia occidentalis and their structures with a 3-keto sugar were established on the basis of spectroscopic and chemical ev idence. They showed signals of two conformers in their H-1- and C-13-NMR sp ectra due to hindered rotation around their C-glycosidic linkages, and the conformations in solution were analyzed by NMR spectroscopic analyses. (C) 1999 Elsevier Science Ltd. All rights reserved.