Two new compounds from Psoralea corylifolia L.

To study the chemical constituents of the fruits of Psoralea corylifolia L., the constituents were isolated and purified by chromatography.  Two new compounds were isolated from the ethyl acetate-soluble fraction of the ethanol extract.  On the basis of chemical and spectroscopic data 1D and 2D NMR, they were identified as 2-(3, 4-dihydroxyphenyl)-8, 8-dimethyl-8H-pyrano2, 3-hchromen-4-one (1) and 5-(2-hydroxyl-1- methyl)-ethyl-4, 5-dihydrofurano2, 3-h(4'-hydroxyl-3', 5'-dimethoxy)-isoflavone (2), and named as coryfolia D and bavarigenin separately.