title: Triterpenoid saponins from Mimusops elengi.
abstract: A novel minor triterpenoid saponin mimusin (3-O-[beta-D-glucopyranosyl- (1-->6)-beta-D-glucopyranosyl]-2 beta,3 beta,6 beta,23-tetrahydroxyolean- 12-en-28-oic acid 28-O-alpha-L-rhamnopyranosyl-(1-->3)-beta-D-xylopyranosyl-(1-->4)-alpha- L- rhamnopyranosyl-(1-->2)-alpha-L-arabinopyranoside was isolated from the seeds of Mimusops elengi, in addition to two known triterpenoid saponins, Mi-saponin A and 16 alpha-hydroxy Mi-saponin A. The structure of the minor saponin was established by comparing its 13C NMR and LS-MS linked-scan, ESI-MS data with FAB-MS of the mimusopsin isolated earlier from the same source.
authors.affiliation: Indian Institute of Chemical Biology, Calcutta, India.
authors.forename: N P
authors.initials: NP
authors.lastname: Sahu
authors.forename: K
authors.initials: K
authors.lastname: Koike
authors.forename: Z
authors.initials: Z
authors.lastname: Jia
authors.forename: T
authors.initials: T
authors.lastname: Nikaido
mesh_terms: D002236:Carbohydrate Conformation; D002240:Carbohydrate Sequence; D007194:India; D009682:Magnetic Resonance Spectroscopy; D008519:Medicine, Traditional; D008969:Molecular Sequence Data; D015394:Molecular Structure; D009828:Oleanolic Acid / Q000031:analogs & derivatives*; D010946:Plants, Medicinal; D012503:Saponins / Q000737:chemistry* / Q000302:isolation & purification; D012639:Seeds; D016339:Spectrometry, Mass, Fast Atom Bombardment; D018629:Spectrometry, Mass, Secondary Ion; D017550:Spectroscopy, Fourier Transform Infrared; D014197:Trees; D014315:Triterpenes / Q000737:chemistry* / Q000302:isolation & purification
chemical_list: D012503:Saponins; D014315:Triterpenes; C105006:mimusin; D009828:Oleanolic Acid