Two 8C-methylated Flavonols from the Leaves of Vellozia candida Mikan (Velloziaceae)
From the leaves of Vellozia candida Mikan (Velloziaceae) the new flavonol 3',4',5,7-tetrahydroxy-3,6-dimethoxy-8-methylflavone and its known 7-O-methyl derivative, 3',4',5-trihydroxy-3,6,7-trimethoxy-8-methylflavone, were isolated and characterized by spectral data, including 2D NMR and tandem mass spectrometry experiments. The 5-hydroxy-3,3',4',6,7-pentamethoxy-8-methylflavone derivative was obtained by methylation with diazomethane.
Saved in:
| Main Authors: | , , , |
|---|---|
| Format: | Digital revista |
| Language: | English |
| Published: |
Sociedade Brasileira de Química
2002
|
| Online Access: | http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-50532002000300005 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|