title: Diterpenoids from Calceolaria alba.
abstract: Chemical examination of the petrol ether (60-80) extract of the aerial parts of Calceolaria alba R. et Pav., collected in Santa Juana, VIII Region, Chile, resulted in the isolation of 3 new diterpenoids. Their structures have been elucidated by a study of their physical and spectral data; in particular using 2 NMR spectroscopy (DEPT, 1H-1H, COSY, NOESY, HMQC and HMBC).
authors: Departament of Chemistry, Universidad Técnica Federico Santa María, Casilla 110-V, Valparaíso, Chile.
authors: M C
authors: MC
authors: Chamy
authors: M
authors: M
authors: Piovano
authors: J A
authors: JA
authors: Garbarino
mesh_terms: D004224:Diterpenes / Q000737:chemistry* / Q000302:isolation & purification; D009682:Magnetic Resonance Spectroscopy; D015394:Molecular Structure; D010936:Plant Extracts / Q000737:chemistry / Q000302:isolation & purification; D028083:Scrophulariaceae / Q000737:chemistry*
chemical_list: D004224:Diterpenes; D010936:Plant Extracts