title: A new ellagic acid derivative from the fruits of Eucalyptus globulus Labill.
abstract: Four ellagic acid derivatives have been isolated from the fruits of Eucalyptus globulus Labill., one of which is new compound, identified as 3-O-methylellagic acid 4'-O-alpha-L-2"-O-acetyl-rhamnopyranoside (1), the known compounds were identified as 3-O-methylellagic acid 4'-O-alpha-L-rhamnopyranoside (2), ellagic acid (3) and 3-O-methylellagic acid (4), on the basis of the analysis of 1H NMR, 13C NMR, HSQC, HMBC, IR and MS spectral data. It is alsoassignment the 13C NMR signals of 3-O-methylellagic acid 4'-O-alpha-L-rhamnopyranoside for the first.
authors.affiliation: State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, and Medical and Healthy Analysis Center, Peking University, Beijing, China.
authors.forename: Qing-Mei
authors.initials: QM
authors.lastname: Guo
authors.forename: Xiu-Wei
authors.initials: XW
authors.lastname: Yang
mesh_terms: D004610:Ellagic Acid / Q000031:analogs & derivatives* / Q000737:chemistry* / Q000302:isolation & purification; D005052:Eucalyptus / Q000737:chemistry*; D005638:Fruit / Q000737:chemistry; D009682:Magnetic Resonance Spectroscopy; D013058:Mass Spectrometry; D009005:Monosaccharides / Q000737:chemistry* / Q000302:isolation & purification; D010936:Plant Extracts / Q000032:analysis; D013055:Spectrophotometry, Infrared; D017550:Spectroscopy, Fourier Transform Infrared
chemical_list: C505645:3-O-methylellagic acid 4'-O-alpha-L-2''-O-acetyl-rhamnopyranoside; D009005:Monosaccharides; D010936:Plant Extracts; D004610:Ellagic Acid