title: Pentacyclic triterpenoid saponin from Cyclamen coum.
abstract: A new triterpenoid saponin, coumoside B, has been isolated from the whole plant of Cyclamen coum. The structure of the compound 3 (C58H92O27) has been deduced by NMR (400 MHz) methods based on the 1H, 13C, DEPT, 1H-1H COSY, HETCOR, NOESY-NMR experiments, and FAB-mass spectrum. Compound 3 was shown to have the structure 16 alpha-hydroxy-3 beta-[[[[beta-xylopyranosyl-(1-->2)]-[beta-glucopyranosyl-(1-->4)]- [beta-glucopyranosyl-(1-->2)]- alpha-arabinopyranosyl]-oxy]olean-12-eno-30,28-lactone and is named coumoside B.
authors.forename: N
authors.initials: N
authors.lastname: Yayli
authors.forename: C
authors.initials: C
authors.lastname: Baltaci
authors.forename: A
authors.initials: A
authors.lastname: Zengin
authors.forename: M
authors.initials: M
authors.lastname: Küçükislamoğlu
authors.forename: H
authors.initials: H
authors.lastname: Genç
authors.forename: M
authors.initials: M
authors.lastname: Küçük
mesh_terms: D002236:Carbohydrate Conformation; D002240:Carbohydrate Sequence; D009682:Magnetic Resonance Spectroscopy; D008969:Molecular Sequence Data; D009828:Oleanolic Acid / Q000031:analogs & derivatives*; D010944:Plants / Q000737:chemistry*; D012503:Saponins / Q000737:chemistry / Q000302:isolation & purification*; D016339:Spectrometry, Mass, Fast Atom Bombardment
chemical_list: D012503:Saponins; C112692:coumoside B; D009828:Oleanolic Acid