Six flavonol glycosides, compds. 1-3 from A. burnatii Gayer and 4-6 from A. variegatum L., were obtained from their methanol exts. 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-D-rhamnopyranoside (1), quercetin 3-O-β-D-glucopyranoside-7-O-β-L-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). Compds. 1, 2 and 4 were isolated for the first time. The antioxidant potential of the methanol exts. and pure compds. was tested with different assays.
New flavonol glycosides from Aconitum burnatii Gáyer and Aconitum variegatum L
BRACA, ALESSANDRA;
2010-01-01
Abstract
Six flavonol glycosides, compds. 1-3 from A. burnatii Gayer and 4-6 from A. variegatum L., were obtained from their methanol exts. 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-D-rhamnopyranoside (1), quercetin 3-O-β-D-glucopyranoside-7-O-β-L-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). Compds. 1, 2 and 4 were isolated for the first time. The antioxidant potential of the methanol exts. and pure compds. was tested with different assays.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
