New Aurone Glucosides and New Phenylpropanoid Glucosides from Bidens pilosa

抄録

Three new glucosides of (Z)-6, 7, 3', 4'-tetrahydroxyaurone, (Z)-7-O-β-D-glucopyranosyl-6, 7, 3', 4'-tetrahydroxyaurone, (Z)-6-O-(6-O-p-coumaroyl-β-D-glucopyranosyl)-6, 7, 3', 4'-tetrahydroxyaurone, (Z)-6-O-(6-O-acetyl-β-D-glucopyranosyl)-6, 7, 3', 4'-tetrahydroxyaurone, together with (Z)-6-O-β-D-glucopyranosyl-6, 7, 3', 4'-tetrahydroxyaurone, and two new phenylpropanoid glucosides, 4-O-(6-O-p-coumaroyl-β-D-glucopyranosyl)-p-coumaric acid and 4-O-(2-O-acetyl-6-O-p-coumaroyl-β-D-glucopyranosyl)-p-coumaric acid, have been isolated from the fresh leaves of Bidens pilosa. These structures have been elucidated on the basis of spectral data and chemical correlation.