title: Trisaccharides from Marsdenia roylei.
abstract: The structures of two novel trisaccharides viz. royleose and deniose isolated from Marsdenia roylei were elucidated with the help of modern physico-chemical techniques and chemical transformations. They were defined as O-beta-D-oleandropyranosyl-(1-->4)-O-beta- D-cymaropyranosyl-(1-->4)-beta-D-oleandropyranose and O-beta-D-oleandropyranosyl-(1-->4)-O-beta-D-digitoxopyranosyl++ +-(1-->4)- beta-D-oleandropyranose respectively. This is the first report on the isolation of trisaccharides of rare deoxy sugars in free state from nature.
authors.affiliation: Department of Chemistry, Lucknow University, India.
authors.forename: A
authors.initials: A
authors.lastname: Kumar
authors.forename: A
authors.initials: A
authors.lastname: Khare
authors.forename: N K
authors.initials: NK
authors.lastname: Khare
mesh_terms: D000107:Acetylation; D002236:Carbohydrate Conformation; D002240:Carbohydrate Sequence; D006868:Hydrolysis; D008969:Molecular Sequence Data; D019906:Nuclear Magnetic Resonance, Biomolecular; D010946:Plants, Medicinal / Q000737:chemistry*; D016339:Spectrometry, Mass, Fast Atom Bombardment; D014312:Trisaccharides / Q000737:chemistry* / Q000302:isolation & purification*
chemical_list: D014312:Trisaccharides; C401854:deniose; C401855:royleose