title: Chemical study of the essential oil of Cyperus rotundus.
abstract: Minor constituents of the essential oil of Cyperus rotundus have been investigated. The three new sesquiterpene hydrocarbons (-)-isorotundene, (-)-cypera-2,4(15)-diene, (-)-norrotundene and the ketone (+)-cyperadione were isolated and their structures elucidated. The absolute configuration of (-)-rotundene was derived by chemical correlation and enantioselective gas chromatography.
authors.affiliation: Institut für Organische Chemie, Universität Hamburg, D-20146 Hamburg, Germany.
authors.forename: M M
authors.initials: MM
authors.lastname: Sonwa
authors.forename: W A
authors.initials: WA
authors.lastname: König
mesh_terms: D029786:Cyperus / Q000737:chemistry*; D008401:Gas Chromatography-Mass Spectrometry / Q000379:methods; D007659:Ketones / Q000302:isolation & purification*; D009682:Magnetic Resonance Spectroscopy / Q000379:methods; D009822:Oils, Volatile / Q000737:chemistry*; D012717:Sesquiterpenes / Q000032:analysis* / Q000302:isolation & purification*
chemical_list: D007659:Ketones; D009822:Oils, Volatile; D012717:Sesquiterpenes; C448121:cypera-2,4(15)-diene; C448119:cyperadione; C448120:isorotundene