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: | Branco,Alexsandro, Pinto,Ângelo C., Ifa,Demian R., Braz-Filho,Raimundo |
---|---|
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!
|
Similar Items
-
Chemical constituents from Vellozia graminifolia (Velloziaceae)
by: Branco,Alexsandro, et al.
Published: (2004) -
Sistemática de Vellozia candida (Velloziaceae)
by: Mello-Silva,Renato de
Published: (2004) -
Circumscribing Vellozia hirsuta and V. tubiflora (Velloziaceae)
by: Mello-Silva,Renato de
Published: (2010) -
A new isopimarane diterpenoid from Vellozia pusilla pohl (velloziaceae)
by: Dantas,Ana Letícia A., et al.
Published: (2003) -
Pollination of two species of Vellozia (Velloziaceae) from high-altitude quartzitic grasslands, Brazil
by: Jacobi,Claudia Maria, et al.
Published: (2007)