title: Diterpenes, ionol-derived, and flavone glycosides from Podocarpus elongatus.
abstract: Eight compounds, nagilactone C 7-O-α-L-arabinopyranosyl-(1→4)-β-D-xylopyranoside, nagilactone C 7-O-β-D-glucopyranosyl-(1→4)-β-D-xylopyranoside, nagilactone C 7-O-β-D-xylopyranoside, nagilactone A 7-O-α-L-arabinopyranosyl-(1→4)-β-D-xylopyranoside, 2β,15S,16,17,19-pentahydroxy-isopimar-8(14)-ene 17-O-β-D-glucopyranoside, 2β,15R,16,17,19-pentahydroxy-isopimar-8(14)-ene 17-O-β-D-glucopyranoside, 1-(2,6,6-trimethyl-4-hydroxycyclohexenyl)-1-hydroxy-buta-1-en-3-one 4-O-β-D-glucopyranoside, and vitexin 2″-O-β-D-(6'''-acetyl)-glucopyranoside together with 13 known compounds, were isolated from the leaves of Podocarpus elongatus. Structures were elucidated by 1D and 2D NMR spectroscopy as well as by ESI mass spectrometry and chemical methods. The absolute configurations of the 15,16-diol moieties in two compounds were determined using Snatzke's method.
authors.affiliation: Dipartimento di Scienze Farmaceutiche, Università di Pisa, Pisa, Italy.
authors.forename: Laura
authors.initials: L
authors.lastname: Faiella
authors.forename: Abeer
authors.initials: A
authors.lastname: Temraz
authors.forename: Nunziatina
authors.initials: N
authors.lastname: De Tommasi
authors.forename: Alessandra
authors.initials: A
authors.lastname: Braca
mesh_terms: D000143:Acids / Q000737:chemistry; D002084:Butylated Hydroxytoluene / Q000737:chemistry*; D005591:Chemical Fractionation / Q000379:methods; D002851:Chromatography, High Pressure Liquid / Q000379:methods; D004224:Diterpenes / Q000737:chemistry / Q000302:isolation & purification*; D047309:Flavones / Q000737:chemistry* / Q000302:isolation & purification; D006027:Glycosides / Q000737:chemistry* / Q000302:isolation & purification; D006868:Hydrolysis; D009682:Magnetic Resonance Spectroscopy; D008968:Molecular Conformation; D010936:Plant Extracts / Q000737:chemistry; D018515:Plant Leaves / Q000737:chemistry*; D021241:Spectrometry, Mass, Electrospray Ionization; D064028:Tracheophyta / Q000737:chemistry*
chemical_list: D000143:Acids; D004224:Diterpenes; D047309:Flavones; D006027:Glycosides; D010936:Plant Extracts; D002084:Butylated Hydroxytoluene; C004552:nagilactone C