title: Hopane-type saponins from the seeds of Glinus lotoides.
abstract: Four new hopane-type saponins, glinusides F, G, H, and I (1-4), and the known succulentoside B (5), as well as the two known flavones 5,7,4'-trihydroxyflavone-6,8-di-C-glucoside (vicenin-2) and 5,7,4'-trihydroxyflavone-8-C-sophoroside (vitexin-2' '-O-glucoside), were isolated from the seeds of Glinus lotoides growing in Ethiopia. On the basis of the spectroscopic data analysis, including 2D NMR and HRESIMS, the new structures were characterized as 3beta-O-beta-D-xylopyranosyl-6alpha-O-beta-D-xylopyranosyl-16beta-O-beta-D-xylopyranosyl-22-hydroxyhopane (1), 3beta-O-alpha-L-rhamnopyranosyl-(1-->2)-beta-D-xylopyranosyl-6alpha,16beta-dihydroxy-22-O-alpha-L-rhamnopyranosylhopane (2), 3beta-O-alpha-L-rhamnopyranosyl-(1-->2)-beta-D-xylopyranosyl-6alpha-O-beta-D-xylopyranosyl-16beta-hydroxy-22-O-alpha-L-rhamnopyranosylhopane (3), and 3beta-O-alpha-L-rhamnopyranosyl-(1-->2)-beta-d-xylopyranosyl-6alpha-O-beta-D-xylopyranosyl-16beta-O-beta-D-xylopyranosyl-22-hopane (4).
authors.affiliation: Pharmazeutisches Institut, Pharmazeutische Technologie, Auf der Morgenstelle 8, D-72076 Tübingen, Germany.
authors.forename: Abebe
authors.initials: A
authors.lastname: Endale
authors.forename: Victor
authors.initials: V
authors.lastname: Wray
authors.forename: Renato
authors.initials: R
authors.lastname: Murillo
authors.forename: Peter C
authors.initials: PC
authors.lastname: Schmidt
authors.forename: Irmgard
authors.initials: I
authors.lastname: Merfort
mesh_terms: D005002:Ethiopia; D015394:Molecular Structure; D035704:Molluginaceae / Q000737:chemistry*; D019906:Nuclear Magnetic Resonance, Biomolecular; D010946:Plants, Medicinal / Q000737:chemistry*; D012503:Saponins / Q000737:chemistry / Q000302:isolation & purification*; D012639:Seeds / Q000737:chemistry; D014315:Triterpenes / Q000737:chemistry / Q000302:isolation & purification*
chemical_list: D012503:Saponins; D014315:Triterpenes; C025206:hopane