A convenient synthesis of new (E)-5-hydroxy-2-styrylchromones by modifications of the Baker-Venkataraman method

Citation
Dcga. Pinto et al., A convenient synthesis of new (E)-5-hydroxy-2-styrylchromones by modifications of the Baker-Venkataraman method, NEW J CHEM, 24(2), 2000, pp. 85-92
Citations number
27
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Chemistry
Journal title
NEW JOURNAL OF CHEMISTRY
ISSN journal
1144-0546 → ACNP
Volume
24
Issue
2
Year of publication
2000
Pages
85 - 92
Database
ISI
SICI code
1144-0546(200002)24:2<85:ACSON(>2.0.ZU;2-5
Abstract
New 5-hydroxy-2-styrylchromones and 3-cinnamoyl-5-hydroxy-2-styrylchromones have been prepared by modifications of the Baker-Venkataraman method. All compounds were fully characterized using several ID and 2D NMR techniques. The E stereochemistry of the double bonds of all the 5-hydroxy-2-styrylchro mones and the conformational features of those substituted in the 2' and 2 " positions were unambiguously established by NOE experiments.