title: New dihydrochalcone and propenamide from Lithocarpus polystachyus.
abstract: 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.
authors.forename: Xiong
authors.initials: X
authors.lastname: Li
authors.forename: Ya
authors.initials: Y
authors.lastname: Zhao
authors.forename: Song
authors.initials: S
authors.lastname: Huang
authors.forename: Weifeng
authors.initials: W
authors.lastname: Song
authors.forename: Xing
authors.initials: X
authors.lastname: Zeng
authors.forename: Shao Zhen
authors.initials: SZ
authors.lastname: Hou
authors.forename: Xiao Ping
authors.initials: XP
authors.lastname: Lai
mesh_terms: D000577:Amides / Q000737:chemistry / Q000302:isolation & purification*; D047188:Chalcones / Q000737:chemistry / Q000302:isolation & purification*; D029962:Fagaceae / Q000737:chemistry*; D009682:Magnetic Resonance Spectroscopy
chemical_list: D000577:Amides; D047188:Chalcones; C015812:dihydrochalcone