Chemical constituents from Belamcanda chinensis

One new flavone and one new isoflavone glycoside were isolated along with 15 known compounds from the rhizome of Belamcanda chinensis (Iridaceae), and their structures were characterised as 5,4'-dihydroxy-6,7-methylenedioxy-3'-methoxyflavone (1) and 3',5'-dimethoxy irisolone-4'-O-beta-D-glucoside (2) on the basis of spectroscopic methods.