title: Sesquiterpenes from the leaves of Tithonia diversifolia.
abstract: Two new compounds, a germacrane sesquiterpene, 1-acetyltagitinin A (1), and a guaianane sesquiterpene, 8beta-isobutyryloxycumambranolide (2), were isolated from leaves of Tithonia diversifolia, together with two known compounds, methyl 3alpha-acetoxy-4alpha-hydroxy-11(13)-eudesmen-12-oa te and tagitinin A. The structures of compounds 1 and 2 were elucidated on the basis of spectral and chemical evidence.
authors.affiliation: Department of Chemistry, National Taiwan University, Taipei, Taiwan, Republic of China.
authors.forename: Y H
authors.initials: YH
authors.lastname: Kuo
authors.forename: C H
authors.initials: CH
authors.lastname: Chen
mesh_terms: D002240:Carbohydrate Sequence; D004224:Diterpenes / Q000737:chemistry / Q000302:isolation & purification*; D009682:Magnetic Resonance Spectroscopy; D013058:Mass Spectrometry; D008969:Molecular Sequence Data; D018515:Plant Leaves / Q000737:chemistry*; D010946:Plants, Medicinal / Q000737:chemistry*; D012717:Sesquiterpenes / Q000737:chemistry / Q000302:isolation & purification*; D013055:Spectrophotometry, Infrared; D013056:Spectrophotometry, Ultraviolet
chemical_list: C113228:1-acetyltagitinin A; C113229:8-isobutyryloxycumambranolide; D004224:Diterpenes; D012717:Sesquiterpenes