Two new compounds, (E)-4-(3, 4-dihydroxyphenyl)-N-(1 -hydroxy-2-(4-hydroxyphenyl) ethyl)-2-oxobut-3-enamide (1) and phloretin2-O-beta-apiofuranosyl (1-->06)-beta-D-glucopyranoside (2) were isolated from Lithocarpus polystachyus Rehd. Their structures were determined on the basis of analysis of their 1D and 2D NMR spectroscopic and mass spectral data.
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