title: Diterpenoids from Humirianthera ampla.
abstract: Two diterpenoids, humirianthol and acrenol, as well as the known annonalide, were isolated from Humirianthera ampla. Humirianthol and acrenol were determined by 1D and 2D NMR spectroscopic techniques to be 3 beta,20:14 beta,16-diepoxy-3 alpha, 15 alpha-dihydroxy-7-pimaren-19,6 beta-olide and 3 beta,20-epoxy-3 alpha,15,16-trihydroxy-7-pimaren-19,6 beta-olide, respectively.
authors.affiliation: Departamento de Química (NPPN), Universidade Federal de Santa Maria, RS, Brazil.
authors.forename: I B
authors.initials: IB
authors.lastname: Graebner
authors.forename: M A
authors.initials: MA
authors.lastname: Mostardeiro
authors.forename: E M
authors.initials: EM
authors.lastname: Ethur
authors.forename: R A
authors.initials: RA
authors.lastname: Burrow
authors.forename: E C
authors.initials: EC
authors.lastname: Dessoy
authors.forename: A F
authors.initials: AF
authors.lastname: Morel
mesh_terms: D001938:Brazil; D002849:Chromatography, Gas; D004224:Diterpenes / Q000737:chemistry*; D009682:Magnetic Resonance Spectroscopy; D010946:Plants, Medicinal / Q000737:chemistry*; D016339:Spectrometry, Mass, Fast Atom Bombardment
chemical_list: D004224:Diterpenes