title: [Monoterpenes and sesquiterpenes from Clausena excavata].
abstract: To investigate monoterpenes and sesquiterpenes of the stems and leaves of Clausena excavata, an AcOEt fraction of the methanol extract was subjected on column chromatographies including silica gel and RP-18, as well as preparative HPLC. The structures of compounds isolated were identified on the basis of spectroscopic data as excamonoterpene (1), (6R, 9S)-9, 10-dihydroxy-4-megastigmen-3-one (2), (3R, 6R, 7E) -3-hydroxy-4, 7-megastigmadien-9-one (3), (3S) -3-hydroxy-7, 8-dihydro-beta-ionone (4), (3S, 5R, 6S) -3-hydroxy-5,6-epoxy-beta-ionone (5), (6R, 9R) -9-hydroxy-4-megastigmen-3-one (6), (3S, SR) -dihydroxy-6, 7-megstigmadien-9-one(7), (-)-loliolide(8), caryolane-1, 9alpha-diol(9) and 2, 6-dihydroxyhumula-3 (12), 7 (13), 9(E)-triene (10), were isolated from the stems and leaves of C. excavata. Compound 1 is a new monoterpene, named as excamonoterpene. Compounds 2-10 were isolated from this plant for the first time.
authors.forename: Wen-Wen
authors.initials: WW
authors.lastname: Peng
authors.forename: Wei-Wu
authors.initials: WW
authors.lastname: Song
authors.forename: Mao-Bo
authors.initials: MB
authors.lastname: Huang
authors.forename: Ning-Hua
authors.initials: NH
authors.lastname: Tan
mesh_terms: D002851:Chromatography, High Pressure Liquid / Q000379:methods*; D054700:Clausena / Q000737:chemistry*; D009682:Magnetic Resonance Spectroscopy; D000432:Methanol / Q000737:chemistry; D015394:Molecular Structure; D039821:Monoterpenes / Q000032:analysis* / Q000737:chemistry; D018515:Plant Leaves / Q000737:chemistry; D018547:Plant Stems / Q000737:chemistry; D012717:Sesquiterpenes / Q000032:analysis* / Q000737:chemistry; D021241:Spectrometry, Mass, Electrospray Ionization
chemical_list: D039821:Monoterpenes; D012717:Sesquiterpenes; C000592637:excamonoterpene; D000432:Methanol