title: Two new dammarane triterpenoids from Kageneckia angustifolia D. Don.
abstract: Two new dammarane triterpenoids, 20R,21-epoxydammar-24-ene-3,23-dione and 20R,21-epoxy-3beta-hydroxydammar-24-ene-23-one have been isolated from the aerial parts of Kageneckia angustifolia D. Don, Rosaceae, along with the previously reported triterpenoids oleanolic acid and 3beta-(beta-D-glucosyloxy)-16alpha,23alpha-epoxycucurbita-5,24-dien-11-one and the phenolic prunasin. The structures of these compounds were established by MS, 1D- and 2D-NMR experiments, and the structure of the new compounds were confirmed by X-ray diffraction analysis.
authors.affiliation: Department of Pharmaceutical Chemistry, Faculty of Pharmacy, University of Salamanca, E-37007 Salamanca, Spain. lopez@usal.es
authors.forename: José Luis
authors.initials: JL
authors.lastname: López-Pérez
authors.forename: Silvia
authors.initials: S
authors.lastname: Erazo
authors.forename: Carla
authors.initials: C
authors.lastname: Delporte
authors.forename: Rosa
authors.initials: R
authors.lastname: Negrete
authors.forename: Orlando
authors.initials: O
authors.lastname: Muñoz
authors.forename: Rubén
authors.initials: R
authors.lastname: García
authors.forename: Nadine
authors.initials: N
authors.lastname: Backhouse
authors.forename: Arturo
authors.initials: A
authors.lastname: San Feliciano
mesh_terms: D002247:Carbon Isotopes; D018360:Crystallography, X-Ray; D009682:Magnetic Resonance Spectroscopy / Q000379:methods* / Q000592:standards; D008958:Models, Molecular; D008968:Molecular Conformation; D011522:Protons; D012015:Reference Standards; D027824:Rosaceae / Q000737:chemistry*; D013237:Stereoisomerism; D014315:Triterpenes / Q000737:chemistry* / Q000302:isolation & purification; D000097669:Dammaranes
chemical_list: D002247:Carbon Isotopes; D011522:Protons; D014315:Triterpenes; D000097669:Dammaranes; C507893:20,21-epoxy-3-hydroxydammar-24-ene-23-one; C507892:20,21-epoxydammar-24-ene-3,23-dione