title: Co-occurrence of phenylphenalenones and flavonoids in Xiphidium caeruleum Aubl. flowers.
abstract: A Xiphidium caeruleum flower extract was separated by semi-preparative HPLC into five fractions, from which three flavonoids, two phenylphenalenones and 17 phenylphenalenone-related compounds including five unknown compounds, were isolated and their structures elucidated by Liquid Chromatography-Diode Array Detection-Solid Phase Extraction-Nuclear Magnetic Resonance spectroscopy (LC-DAD-SPE-NMR) and mass spectrometry (MS). This is the first report of the co-occurrence of phenylphenalenones and flavonoids in the Haemodoraceae family. The ecological implications of flavonoids and various phenylphenalenone-type compounds and their putative biosynthesis sites in X. caeruleum are subject to discussion.
authors.affiliation: Max Planck Institute for Chemical Ecology, Beutenberg Campus, Hans-Knöll Strasse 8, Jena, Germany.
authors.forename: Jingjing
authors.initials: J
authors.lastname: Fang
authors.forename: Dirk
authors.initials: D
authors.lastname: Hölscher
authors.forename: Bernd
authors.initials: B
authors.lastname: Schneider
mesh_terms: D005419:Flavonoids / Q000737:chemistry / Q000378:metabolism*; D035264:Flowers / Q000378:metabolism*; D019684:Magnoliopsida / Q000378:metabolism*; D043803:Phenalenes / Q000737:chemistry / Q000378:metabolism*
chemical_list: D005419:Flavonoids; D043803:Phenalenes