title: Macrophyllicin, a saponin from Primula macrophylla.
abstract: A new triterpenoid saponin, macrophyllicin has been isolated from the methanolic extract of the whole plant of Primula macrophylla. On the basis of chemical and spectral evidence, the structure of macrophyllicin was determined as 3-O-[alpha-L-rhamnopyranosyl-(1-->2)-beta-D-glucopyranosyl- (1-->2)-beta-D-galactopyranosyl-(1-->2)-beta-D-glucuronopyranosyl] -6 beta,16 alpha,28-trihydroxy-olean-12-ene. The 2D NMR experiments were useful in providing complete information on the structure of macrophyllogenin, a new sapogenin.
authors.affiliation: H.E.J. Research Institute of Chemistry, University of Karachi, Pakistan.
authors.forename: V U
authors.initials: VU
authors.lastname: Ahmad
authors.forename: M G
authors.initials: MG
authors.lastname: Shah
authors.forename: F V
authors.initials: FV
authors.lastname: Mohammad
authors.forename: F T
authors.initials: FT
authors.lastname: Baqai
mesh_terms: D002240:Carbohydrate Sequence; D009682:Magnetic Resonance Spectroscopy; D008969:Molecular Sequence Data; D015394:Molecular Structure; D009828:Oleanolic Acid / Q000031:analogs & derivatives*; D010944:Plants / Q000737:chemistry*; D012503:Saponins / Q000737:chemistry / Q000302:isolation & purification*; D014315:Triterpenes / Q000737:chemistry / Q000302:isolation & purification*
chemical_list: D012503:Saponins; D014315:Triterpenes; C080850:macrophyllicin; D009828:Oleanolic Acid