title: Two new xanthones from Hypericum japonicum.
abstract: Two new xanthones, 1,6-dihydroxyisojacereubin-5-O-beta-D-glucoside (1) and 3,6,7-tri-hydroxy-1-methoxy-xanthone (2), were isolated from Hypericum japonicum. The structural elucidation of the isolated compounds were primarily based on HREIMS, EIMS, UV, IR, 1D-, and 2D-NMR analyses, including COSY, HMQC, HMBC, and NOESY correlations.
authors.affiliation: Department of Phytochemistry, College of Pharmacy, Second Military Medical University, Shanghai, PR China.
authors.forename: P
authors.initials: P
authors.lastname: Fu
authors.forename: W-D
authors.initials: WD
authors.lastname: Zhang
authors.forename: R H
authors.initials: RH
authors.lastname: Liu
authors.forename: T-Z
authors.initials: TZ
authors.lastname: Li
authors.forename: Y-H
authors.initials: YH
authors.lastname: Shen
authors.forename: H-L
authors.initials: HL
authors.lastname: Li
authors.forename: W
authors.initials: W
authors.lastname: Zhang
authors.forename: H-S
authors.initials: HS
authors.lastname: Chen
mesh_terms: D002681:China; D020902:Hypericum / Q000737:chemistry*; D013058:Mass Spectrometry; D019906:Nuclear Magnetic Resonance, Biomolecular; D009904:Optical Rotation; D010936:Plant Extracts / Q000737:chemistry / Q000302:isolation & purification*; D013055:Spectrophotometry, Infrared; D013056:Spectrophotometry, Ultraviolet; D044004:Xanthones / Q000737:chemistry / Q000302:isolation & purification*
chemical_list: D010936:Plant Extracts; D044004:Xanthones