| Popis: |
Three new isomeric biisoflavonoids, dapholidins A–C (1–3, resp.), have been isolated from the AcOEt-soluble fraction of the MeOH-soluble extract of the roots of Daphne oleoides, along with the known compounds daphwazirin (4), daphnetin 8-O-β-D-glucopyranoside (5), daphnin (6), daphneticin 4″-O-β-D-glucopyranoside (7), and 6,7-dihydroxy-3-methoxy-8-[2-oxo-2H-1-benzopyran-7-(O-β-D-glucopyranosyl)-8-yl]-2H-1-benzopyran-2-one (8). The structures of the new compounds were determined by spectroscopic analyses, including 1D- and 2D-NMR. |
