title: Preparation of di-O-triphenylmethyl-(trityl-)cyclomalto-octaoses, and isolation and characterization by "hex-5-enose degradation" of four positional isomers.
abstract: Four regioisomeric ditritylated derivatives of cyclomalto-octaose (1, cG8), namely, 6(I),6(n)-di-O-trityl-cG8S have been prepared by the reaction of 1 with chlorotriphenylmethane in pyridine and isolated by high-performance liquid chromatography. The regiochemical determination of the four ditrityl-substituted derivatives has been achieved by means of the "hex-5-enose degradation," followed by examination of the products by fast-atom bombardment-mass spectrometry.
authors.affiliation: Faculty of Pharmaceutical Sciences, Mukogawa Women's University, Nishinomiya, Japan.
authors.forename: T
authors.initials: T
authors.lastname: Tanimoto
authors.forename: T
authors.initials: T
authors.lastname: Sakaki
authors.forename: K
authors.initials: K
authors.lastname: Koizumi
mesh_terms: D002240:Carbohydrate Sequence; D003505:Cyclodextrins / Q000138:chemical synthesis* / Q000737:chemistry; D007536:Isomerism; D008969:Molecular Sequence Data; D009844:Oligosaccharides / Q000138:chemical synthesis* / Q000737:chemistry; D014320:Triphenylmethyl Compounds / Q000138:chemical synthesis* / Q000737:chemistry
chemical_list: D003505:Cyclodextrins; D009844:Oligosaccharides; D014320:Triphenylmethyl Compounds