title: New flavonoid C-O-C dimers and other chemical constituents from Garcinia brevipedicellata stem heartwood.
abstract: The methanol extract of the stem heartwood of Garcinia brevipedicellata has furnished three new flavonoid C-O-C dimers, brevipedicilones A (6), B (8) and C (10), along with five previously reported flavonoid dimers, viz. amentoflavone (1), 4″'-O-methylamentoflavone (2), robustaflavone (3), 4'-O-methyl robustaflavone (4) and tetrahinokiflavone (5). The new structures, which are composed of flavanone-flavanonol or flavanonol-flavanonol sub-units, were established based on spectroscopic analysis including 1D and 2D NMR (1H-1H COSY, HSQC, HMBC, and NOESY) spectroscopy, and by comparing their spectral data with those reported for related compounds.
authors.forename: Bintou
authors.initials: B
authors.lastname: Abderamane
authors.forename: Anastasie E
authors.initials: AE
authors.lastname: Tih
authors.forename: Raphael T
authors.initials: RT
authors.lastname: Ghogomu
authors.forename: Alain
authors.initials: A
authors.lastname: Blond
authors.forename: Bernard
authors.initials: B
authors.lastname: Bodo
mesh_terms: D044950:Flavanones / Q000737:chemistry; D005419:Flavonoids / Q000737:chemistry* / Q000302:isolation & purification; D029760:Garcinia / Q000737:chemistry*; D009682:Magnetic Resonance Spectroscopy / Q000379:methods; D000432:Methanol / Q000737:chemistry; D015394:Molecular Structure; D018547:Plant Stems / Q000737:chemistry*; D014934:Wood / Q000737:chemistry*
chemical_list: D044950:Flavanones; D005419:Flavonoids; C028610:flavanone; D000432:Methanol