title: A new kaurane diterpene dimer from Parinari campestris.
abstract: A new kaurane diterpene dimer, 15-oxozoapatlin-13alpha-yl-10'alpha,16'alpha-dihydroxy-9'alpha-methyl-20'-nor-kauran-19'-oic acid gamma-lactone-17'-oate (1), together with the known 13-hydroxy-15-oxozoapatlin (2), 10alpha,13alpha,16alpha,17-tetrahydroxy-9alpha-methyl-15-oxo-20-nor-kauran-19-oic acid gamma-lactone (3), 2alpha,10alpha,13alpha,16alpha,17-pentahydroxy-9alpha-methyl-15-oxo-20-nor-kauran-19-oic acid (19,10)-lactone (4), 3alpha,10alpha,13alpha,16alpha,17-pentahydroxy-9alpha-methyl-15-oxo-20-nor-kauran-19-oic acid gamma-lactone (5), and 1beta,16alpha,17-trihydroxy-ent-kaurane (6) were isolated from the leaves of Parinari campestris and identified on the basis of detailed spectral analysis, including 2D NMR spectrometry and ESI-MS.
authors.affiliation: Dipartimento di Chimica Bioorganica e Biofarmacia, Università di Pisa, Via Bonanno, 33, 56126 Pisa, Italy. braca@farm.unipi.it
authors.forename: Alessandra
authors.initials: A
authors.lastname: Braca
authors.forename: Ayman F
authors.initials: AF
authors.lastname: Abdel-Razik
authors.forename: Jeannette
authors.initials: J
authors.lastname: Mendez
authors.forename: Ivano
authors.initials: I
authors.lastname: Morelli
mesh_terms: D045469:Chrysobalanaceae / Q000737:chemistry*; D045786:Diterpenes, Kaurane / Q000737:chemistry* / Q000302:isolation & purification*; D007783:Lactones / Q000737:chemistry*; D009682:Magnetic Resonance Spectroscopy; D015394:Molecular Structure; D018515:Plant Leaves / Q000737:chemistry
chemical_list: C507782:15-oxozoapatlin-13alpha-yl-10'alpha,16'alpha-dihydroxy-9'alpha-methyl-20'-nor-kauran-19'-oic acid gamma-lactone-17'-oate; D045786:Diterpenes, Kaurane; D007783:Lactones