Anthocyanin trisaccharides in blue berries of Vaccinium padifolium

Delphinidin 3-O-α-rhamnoside, malvidin 3-O-(6″-O-α-rhamnopyranosyl-β-glucopyranoside) and the 3-O-(6″-O-α-rhamnopyranosyl-2″-O-β-xylopyranosyl-β-glucopyranosides) of cyanidin, petunidin and peonidin were isolated by various chromatographic techniques from the edible berries of Vaccinium padifolium. Their complete structures were elucidated mainly by one- and two-dimensional nuclear magnetic resonance spectroscopy. Together they account for 7% of the anthocyanin content in this species. No anthocyanidin 3-triglycoside, 3-rutinoside or 3-rhamnoside had previously been found in the genus Vaccinium. The 3-O-(6″-O-α-rhamnopyranosyl-2″-O-β-xylopyranosyl-β-glucopyranosides) of petunidin and peonidin are novel compounds.