title: Triterpenoidal lupin saponins from the Chilean legume Lupinus oreophilus Phil.
abstract: Two lupin saponins, 3beta,21alpha,22beta,24-tetrahydroxyolean-12-en-3-O-alpha-L-rhamnopyranosyl-(1-->2)-beta-D-galactopyranosyl-(1-->2)-beta-D-glucuronopyranosyl-21-O-alpha-L-arabinopyranoside and 3beta,21alpha,22beta,24-tetrahydroxyolean-12-en-3-O-beta-D-galactopyranosyl-(1-->2)-beta-D-glucuronopyranosyl-21-O-alpha-L-rhamnopyranoside, along with eight other saponins and one triterpene previously reported from other legumes, were isolated from the aerial parts of Lupinus oreophilus collected in northern Chile. The structures of the isolated compounds were established with the help of extensive spectroscopic techniques.
authors.affiliation: Department of Pharmacology and Toxicology, College of Pharmacy, University of Arizona, 1703 E. Mabel St., Tucson, AZ 85721-0207, USA.
authors.forename: Girma M
authors.initials: GM
authors.lastname: Woldemichael
authors.forename: Gloria
authors.initials: G
authors.lastname: Montenegro
authors.forename: Barbara N
authors.initials: BN
authors.lastname: Timmermann
mesh_terms: D002236:Carbohydrate Conformation; D002240:Carbohydrate Sequence; D002677:Chile; D031297:Lupinus / Q000737:chemistry*; D008969:Molecular Sequence Data; D019906:Nuclear Magnetic Resonance, Biomolecular; D035261:Plant Components, Aerial / Q000737:chemistry; D012503:Saponins / Q000737:chemistry* / Q000302:isolation & purification*; D019032:Spectrometry, Mass, Matrix-Assisted Laser Desorption-Ionization / Q000379:methods; D013055:Spectrophotometry, Infrared; D014315:Triterpenes / Q000737:chemistry* / Q000302:isolation & purification*
chemical_list: D012503:Saponins; D014315:Triterpenes