title: New triterpenoid saponins, asterbatanoside D and E, from Aster batangensis.
abstract: Two new triterpenoid saponins named asterbatanoside D and E have been isolated from Aster batangensis and their structures elucidated as 3-O-beta- D-glucopyranosyl-bayogenin-28-O-beta-D-glucopyranosyl-(1-->6)-beta -D- glucopyranoside and 3-O-6'-acetyl-beta-D-glucopyranosyl-bayogenin-28-O-beta-D- glucopyranosyl-(1-->6)-beta-D-glucopyranoside by means of MS, 1D and 2D NMR techniques (COSY, TOCSY, ROESY, HMQC, and HMBC), and chemical reactions.
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: K
authors.initials: K
authors.lastname: Ma
authors.forename: H M
authors.initials: HM
authors.lastname: Wu
mesh_terms: D002236:Carbohydrate Conformation; D002240:Carbohydrate Sequence; D008968:Molecular Conformation; D008969:Molecular Sequence Data; D015394:Molecular Structure; D009828:Oleanolic Acid / Q000031:analogs & derivatives*; D010946:Plants, Medicinal / Q000737:chemistry*; D012503:Saponins / Q000737:chemistry* / Q000302:isolation & purification; D014315:Triterpenes / Q000737:chemistry* / Q000302:isolation & purification
chemical_list: D012503:Saponins; D014315:Triterpenes; C094633:asterbatanoside D; C094649:asterbatanoside E; D009828:Oleanolic Acid