title: Sesquiterpenoid constituents of the liverworts Lepidozia fauriana and Lepidozia vitrea.
abstract: The sesquiterpene constituents of the essential oils of the Taiwanese liverworts Lepidozia fauriana and L. vitrea were investigated. 11,12-Dihydrochiloscyphone and 7,10-anhydro-11,12-dihydrochiloscypholone were isolated from L. fauriana and spectroscopically characterised together with their hydrogenation products. From the same species three amorphane derivatives amorpha-4,9-dien-14-al, amorpha-4,9-dien-2-ol and 7,14-anhydroamorpha-4,9-diene, and from L. vitrea two oxygenated elemanes, namely 7-acetoxy-elema-1,3-dien-8-ol and elema-1,3-dien-7-ol, were isolated and identified. Structure elucidation was carried out by NMR spectroscopy and chemical correlations in conjunction with enantioselective gas chromatography were utilized to establish absolute configurations.
authors.affiliation: Institut für Organische Chemie, Universität Hamburg, Martin-Luther-King-Platz 6, D-20146, Hamburg, Germany.
authors.forename: C
authors.initials: C
authors.lastname: Paul
authors.forename: W A
authors.initials: WA
authors.lastname: König
authors.forename: C L
authors.initials: CL
authors.lastname: Wu
mesh_terms: D008401:Gas Chromatography-Mass Spectrometry / Q000379:methods; D009682:Magnetic Resonance Spectroscopy / Q000379:methods; D009822:Oils, Volatile / Q000737:chemistry*; D010946:Plants, Medicinal / Q000737:chemistry*; D012717:Sesquiterpenes / Q000032:analysis*
chemical_list: D009822:Oils, Volatile; D012717:Sesquiterpenes