title: Xanthones from the twigs of Mammea siamensis.
abstract: 1,2-Dimethoxy-5-hydroxyxanthone, a new xanthone, was isolated from the twigs of Mammea siamensis, in addition to six known xanthones (5-hydroxy-1-methoxy-, 1,3-dimethoxy-5-hydroxy-, 2,5-dihydroxy-1-methoxy-, 1,7-dihydroxy-, 1,3,7-trihydroxy- and 3,5-dihydroxy-1-methoxyxanthone). Structures for these compounds were deduced from their spectral data.
authors.affiliation: Department of Medicinal Chemistry and Pharmacognosy, College of Pharmacy, University of Illinois at Chicago 60612, USA.
authors.forename: O
authors.initials: O
authors.lastname: Poobrasert
authors.forename: H L
authors.initials: HL
authors.lastname: Constant
authors.forename: C W
authors.initials: CW
authors.lastname: Beecher
authors.forename: N R
authors.initials: NR
authors.lastname: Farnsworth
authors.forename: A D
authors.initials: AD
authors.lastname: Kinghorn
authors.forename: J M
authors.initials: JM
authors.lastname: Pezzuto
authors.forename: G A
authors.initials: GA
authors.lastname: Cordell
authors.forename: T
authors.initials: T
authors.lastname: Santisuk
authors.forename: V
authors.initials: V
authors.lastname: Reutrakul
mesh_terms: D000972:Antineoplastic Agents, Phytogenic / Q000737:chemistry / Q000302:isolation & purification* / Q000494:pharmacology; D002851:Chromatography, High Pressure Liquid / Q000379:methods; D006801:Humans; D009682:Magnetic Resonance Spectroscopy; D013058:Mass Spectrometry / Q000379:methods; D014197:Trees / Q000737:chemistry*; D014407:Tumor Cells, Cultured; D014966:Xanthenes / Q000737:chemistry / Q000302:isolation & purification* / Q000494:pharmacology; D044004:Xanthones
chemical_list: D000972:Antineoplastic Agents, Phytogenic; D014966:Xanthenes; D044004:Xanthones; C009689:xanthone