DPPH radical scavenging activity of two flavonol glycosides from Aconitum napellus sp. lusitanicum.
The DPPH radical scavenging activity of two flavonol glycosides obtained from ethanolic extracts of Aconitum napellus sp. lusitanicum was studied. The results showed a high DPPH antiradical activity of compound 1 (quercetin 3-O-(6-trans-caffeoyl)-beta-glucopyranosyl-(1-->2)-beta-glucopyranosyl-7-O-alpha-rhamnopyranoside) when compared with compound 2 (quercetin-3-sophoroside-7-rhamnopyranoside), rutin and ascorbic acid. The relationship between the caffeoyl and rhamnopyranoside groups in the flavonol glycosides structures and the DPPH antiradical activity was also discussed.
Luis
J C
JC
Facultad de Farmacia, Departamento de Biología Vegetal y Fisiología Vegetal, Universidad de La Laguna, Avenida Astrofísico Francisco Sánchez s/n, C. P. 38206, La Laguna, Tenerife, Spain. jcluis@ull.es
Valdés
F
F
Martín
R
R
Carmona
A J
AJ
Díaz
Jesús G
JG
D031841:Aconitum; D001713:Biphenyl Compounds; D044948:Flavonols / Q000737:chemistry / Q000494:pharmacology; D016166:Free Radical Scavengers / Q000737:chemistry / Q000494:pharmacology*; D006027:Glycosides / Q000737:chemistry / Q000494:pharmacology; D006801:Humans; D008517:Phytotherapy; D010851:Picrates / Q000737:chemistry; D010936:Plant Extracts / Q000737:chemistry / Q000494:pharmacology*
D001713:Biphenyl Compounds; D044948:Flavonols; D016166:Free Radical Scavengers; D006027:Glycosides; D010851:Picrates; D010936:Plant Extracts; C004931:1,1-diphenyl-2-picrylhydrazyl