title: Xanthones from the roots of Cudrania fruticosa Wight.
abstract: Chemical investigation on the roots of Cudrania fruticosa resulted in the isolation of two new xanthones, 1,6,7-trihydroxy-2-(1,1-dimethyl-2-propenyl)-3-methoxyxanthone (1) and 3,6,7-trihydroxy-1-methoxyxanthone (2), together with three known ones, 1,3,5-trihydroxy-4-(3-hydroxy-3-methylbutyl)xanthone (3), 1,3-dihydroxy-6,7-dimethoxyxanthone (4) and 3,5,6-trihydroxy-1-methoxyxanthone (5), respectively. Their structures were elucidated on the basis of spectral and chemical techniques.
authors.affiliation: Institute of Medicinal Plant Development, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100094, China. beibeiliang@263.net
authors.forename: B
authors.initials: B
authors.lastname: Liang
authors.forename: H-R
authors.initials: HR
authors.lastname: Li
authors.forename: L-Z
authors.initials: LZ
authors.lastname: Xu
authors.forename: S-L
authors.initials: SL
authors.lastname: Yang
mesh_terms: D009682:Magnetic Resonance Spectroscopy; D029586:Moraceae / Q000737:chemistry*; D018517:Plant Roots / Q000737:chemistry*; D044004:Xanthones / Q000737:chemistry / Q000302:isolation & purification*
chemical_list: C525316:1,6,7-trihydroxy-2-(1,1-dimethyl-2-propenyl)-3-methoxyxanthone; C525317:3,6,7-trihydroxy-1-methoxyxanthone; D044004:Xanthones