Dapholidins A – C, New Isomeric Biisoflavonoids From Daphne oleoides. Issue 9 (18th September 2013) - Aijaz Anwar, Muhammad
Abstract 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.