title: Triterpene saponins from Tetrapanax papyriferum K. Koch.
abstract: Four new oleanane-type saponins, papyrioside LA--LD, were isolated from the leaves of Tetrapanax papyriferum. The structures of these new compounds were elucidated as 11 alpha-hydroxy-3,21-dioxo-olean-12-en-28-oyl-alpha-L-rhamnopyranosy l- (1-->4)-(6-O-acetyl-beta-D-glucopyranosyl)-(1-->6)- beta-D-glucopyranoside, 11 alpha-methoxy-3,21-dioxo-olean-12-en-28-oyl-alpha-L-rhamnopyranosy l- (1-->4)-(6-O-acetyl-beta-D-glucopyranosyl)-(1-->6)- beta-D-glucopyranoside, 3 alpha-hydroxy-11 alpha-methoxy-21-oxo-olean-12-en-28-oyl-alpha-L-rhamnopyranosyl-(1 -->4)- (6-O-acetyl-beta-D-glucopyranosyl)-(1-->6)-beta-D-glucopyranoside and 21 alpha-hydroxy-11 alpha-methoxy-3-oxo-olean-12-en-28-oyl-alpha-L- rhamnopyranosyl-(1-->4)-beta-D-glucopyranosyl-(1-->6)- beta-D-glucopyranoside, respectively, on the basis of spectroscopic and chemical evidence.
authors.affiliation: Department of Pharmacognosy, Faculty of Pharmaceutical Sciences, Nagoya City University, Japan.
authors.forename: K
authors.initials: K
authors.lastname: Kojima
authors.forename: I
authors.initials: I
authors.lastname: Saracoglu
authors.forename: M
authors.initials: M
authors.lastname: Mutsuga
authors.forename: Y
authors.initials: Y
authors.lastname: Ogihara
mesh_terms: D002240:Carbohydrate Sequence; D009682:Magnetic Resonance Spectroscopy; D018515:Plant Leaves / Q000737:chemistry*; D012503:Saponins / Q000737:chemistry / Q000302:isolation & purification*; D016339:Spectrometry, Mass, Fast Atom Bombardment; D013729:Terpenes / Q000737:chemistry / Q000302:isolation & purification*
chemical_list: D012503:Saponins; D013729:Terpenes