title: Norcyperone, a novel skeleton norsesquiterpene from Cyperus rotundus L.
mesh_terms: D029786:Cyperus / Q000737:chemistry*; D005663:Furans; D009682:Magnetic Resonance Spectroscopy; D013058:Mass Spectrometry; D015394:Molecular Structure; D012717:Sesquiterpenes / Q000737:chemistry*; D014961:X-Ray Diffraction
chemical_list: D005663:Furans; D012717:Sesquiterpenes; C018674:tetrahydrofuran