title: Labdane diterpenes from Haplopappus illinitus.
abstract: A chemical study of aerial parts of Haplopappus illinitus afforded five labdane diterpenoids whose structures were elucidated by high field NMR spectroscopy and 2D techniques. Four of them are dicarboxylic acids previously reported as the corresponding dimethyl ester derivatives and the fifth is a new compound.
authors.affiliation: Departamento de Química, Facultad de Ciencias, Universidad de Chile, Santiago. ffaini@uchile.cl
authors.forename: Francesca
authors.initials: F
authors.lastname: Faini
authors.forename: Cecilia
authors.initials: C
authors.lastname: Labbé
authors.forename: René
authors.initials: R
authors.lastname: Torres
authors.forename: Giuliano
authors.initials: G
authors.lastname: Delle Monache
authors.forename: Franco
authors.initials: F
authors.lastname: Delle Monache
mesh_terms: D002677:Chile; D004224:Diterpenes / Q000737:chemistry / Q000302:isolation & purification*; D031206:Haplopappus / Q000737:chemistry*; D015394:Molecular Structure; D019906:Nuclear Magnetic Resonance, Biomolecular; D018515:Plant Leaves / Q000737:chemistry; D018547:Plant Stems / Q000737:chemistry; D010946:Plants, Medicinal / Q000737:chemistry*; D013055:Spectrophotometry, Infrared
chemical_list: D004224:Diterpenes; C433017:labdane