title: Titerpenoid saponins from Atriplex semibaccata.
abstract: Four new triterpenoid saponins, 3-O-([beta-D-glucopyranosyl-(1-->2)]-beta-D-galactopyranosyl)-11alpha-methoxy-23-hydroxylongispinogenin, 3-O-([beta-D-glucopyranosyl-(1-->2)]-beta-D-galactopyranosyl)-11alpha-methoxy-23,29-dihydroxylongispinogenin, 3-O-([beta-D-glucopyranosyl-(1-->2)]-beta-D-galactopyranosyl)-29-hydroxysaikogenin F and 3-O-([beta-D-glucopyranosyl-(1-->2)]-beta-D-galactopyranosyl)-saikogenin F, have been isolated from Atriplex semibaccata. The structures were determined primarily by NMR spectroscopy. The assignment of NMR signals was performed by means of 1H-1H COSY, ROESY, HMQC and HMBC experiments.
authors.affiliation: University of Bayreuth, Organic Chemistry, NW II, D-95440 Bayreuth, Germany.
authors.forename: Kamel H
authors.initials: KH
authors.lastname: Shaker
authors.forename: Katja
authors.initials: K
authors.lastname: Dockendorff
authors.forename: Karlheinz
authors.initials: K
authors.lastname: Seifert
mesh_terms: D027466:Atriplex / Q000737:chemistry*; D002247:Carbon Isotopes; D006859:Hydrogen; D009682:Magnetic Resonance Spectroscopy; D000432:Methanol; D008958:Models, Molecular; D015394:Molecular Structure; D010936:Plant Extracts / Q000737:chemistry / Q000302:isolation & purification; D012503:Saponins / Q000737:chemistry* / Q000302:isolation & purification; D014315:Triterpenes / Q000737:chemistry* / Q000302:isolation & purification
chemical_list: D002247:Carbon Isotopes; D010936:Plant Extracts; D012503:Saponins; D014315:Triterpenes; D006859:Hydrogen; D000432:Methanol