title: A novel cyclodione coumarin from the stem bark of Mesua beccariana.
abstract: Our ongoing investigations on the stem bark of Mesua beccariana afforded a novel cyclodione coumarin, beccamarin, together with two known xanthones, mesuarianone, mesuasinone, two anthraquinones, 4-methoxy-1,3,5-trihydroxy-anthraquinone and 2,5-dihydroxy-1,3,4-trimethoxyanthraquinone and one coumarin, mammea A/AB. The structures were elucidated by 1D and 2D NMR and MS techniques.
authors.affiliation: Department of Chemistry, Faculty of Science, Universiti Putra Malaysia, Serdang, Selangor 43400, Malaysia. gwen@science.upm.edu.my
authors.forename: Gwendoline Cheng Lian
authors.initials: GC
authors.lastname: Ee
authors.forename: Soek Sin
authors.initials: SS
authors.lastname: Teh
authors.forename: Siau Hui
authors.initials: SH
authors.lastname: Mah
authors.forename: Mawardi
authors.initials: M
authors.lastname: Rahmani
authors.forename: Yun Hin
authors.initials: YH
authors.lastname: Taufiq-Yap
authors.forename: Khalijah
authors.initials: K
authors.lastname: Awang
mesh_terms: D028084:Clusiaceae / Q000737:chemistry*; D003374:Coumarins / Q000737:chemistry / Q000302:isolation & purification*; D009682:Magnetic Resonance Spectroscopy; D015394:Molecular Structure; D024301:Plant Bark / Q000737:chemistry*; D010936:Plant Extracts / Q000737:chemistry / Q000302:isolation & purification*; D017550:Spectroscopy, Fourier Transform Infrared; D044366:Transition Temperature
chemical_list: D003374:Coumarins; D010936:Plant Extracts; C568715:beccamarin