New flavonol glycosides from Aconitum burnatii Gáyer and Aconitum variegatum L.
Six flavonol glycosides, compounds 1-3 from A. burnatii Gáyer and 4-6 from A. variegatum L., were obtained from their methanol extracts of aerial parts. The identified structures were quercetin 3-O-β-D-glucopyranoside-7-O-(6-E-p-coumaroyl)-β-D-glucopyranosyl-(1 → 3)-α-L-rhamnopyranoside (1), quercetin 3-O-β-D-glucopyranoside-7-O-β-D-glucopyranosyl-(1 → 3)-α-L-rhamnopyranoside (2), quercetin 3-O-β-D-glucopyranoside-7-O-(6-E-caffeoyl)-β-D-glucopyranosyl-(1 → 3)-α-L-rhamnopyranoside (3), kaempferol 3-O-β-D-galactopyranoside-7-O-α-L-arabinopyranoside (4), quercetin 3-O-β-D-glucopyranoside (5), and kaempferol 3-O-β-D-glucopyranoside (6). Compounds 1, 2 and 4 were isolated for the first time. The antioxidant potential of the methanol extracts and pure compounds was tested with different assays.
Vitalini
Sara
S
Dipartimento di Produzione Vegetale, Università degli Studi di Milano, via Celoria 2, 20133 Milano, Italy.
Braca
Alessandra
A
Passarella
Daniele
D
Fico
Gelsomina
G
D031841:Aconitum / Q000737:chemistry*; D000975:Antioxidants / Q000737:chemistry / Q000302:isolation & purification / Q000494:pharmacology; D044948:Flavonols / Q000737:chemistry / Q000302:isolation & purification* / Q000494:pharmacology; D006027:Glycosides / Q000737:chemistry / Q000302:isolation & purification* / Q000494:pharmacology; D015394:Molecular Structure; D035261:Plant Components, Aerial; D010936:Plant Extracts / Q000737:chemistry / Q000302:isolation & purification / Q000494:pharmacology
D000975:Antioxidants; D044948:Flavonols; D006027:Glycosides; D010936:Plant Extracts