title: Glycosides from Aster yunnanensis.
abstract: A new oleanane-type triterpene saponin named asteryunnanoside E and a new acetylene glycoside named asteryunnanoside I have been isolated from the roots of Aster yunnanensis, and their structures elucidated as 3-O-beta-D-glucopyranosyl-bayogenin-28-O-beta-D- glucopyranosyl-(1-->2)-beta-D-glucopyranoside and 2Z,8E-decadiene-4,6-diyn-1-O-beta-D-glucopyranos yl-(1-->2)-beta-D- glucopyranoside by means of 1D and 2D NMR techniques (COSY, HETCOR, COLOC, HOHAHA and ROESY) and chemical transformations.
authors.affiliation: Shanghai Institute of Materia Medica, Academia Sinica, China.
authors.forename: Y
authors.initials: Y
authors.lastname: Shao
authors.forename: B N
authors.initials: BN
authors.lastname: Zhou
authors.forename: J H
authors.initials: JH
authors.lastname: Gao
authors.forename: L Z
authors.initials: LZ
authors.lastname: Lin
authors.forename: G A
authors.initials: GA
authors.lastname: Cordell
mesh_terms: D002236:Carbohydrate Conformation; D002240:Carbohydrate Sequence; D006027:Glycosides / Q000737:chemistry* / Q000302:isolation & purification; D009682:Magnetic Resonance Spectroscopy; D008969:Molecular Sequence Data; D009844:Oligosaccharides / Q000737:chemistry* / Q000302:isolation & purification; D018517:Plant Roots / Q000737:chemistry; D010944:Plants / Q000737:chemistry*; D016339:Spectrometry, Mass, Fast Atom Bombardment; D013055:Spectrophotometry, Infrared
chemical_list: D006027:Glycosides; D009844:Oligosaccharides