title: Clockwise-counterclockwise differentiation on the upper rim of a monofunctional gamma-cyclodextrin: efficient topological control in the syntheses of capped cyclodextrins.
abstract: Intramolecular condensation of 6(A)-(N-dansyl-l-cysteine)-gamma-cyclodextrin occurred only at 6(B)-OH of the many OH groups to afford the corresponding lactone with an exo-topology.
authors.affiliation: Department of Molecular Medicinal Sciences, Graduate School of Biomedical Sciences, Nagasaki University, Bunkyo-machi 1-14, Nagasaki 852-8521, Japan.
authors.forename: Hua
authors.initials: H
authors.lastname: Yu
authors.forename: De-Qi
authors.initials: DQ
authors.lastname: Yuan
authors.forename: Yuji
authors.initials: Y
authors.lastname: Makino
authors.forename: Makoto
authors.initials: M
authors.lastname: Fukudome
authors.forename: Ru-Gang
authors.initials: RG
authors.lastname: Xie
authors.forename: Kahee
authors.initials: K
authors.lastname: Fujita
mesh_terms: D000215:Acylation; D002851:Chromatography, High Pressure Liquid; D003500:Cyclization; D003545:Cysteine / Q000737:chemistry; D003619:Dansyl Compounds / Q000737:chemistry; D007783:Lactones / Q000138:chemical synthesis / Q000737:chemistry; D009682:Magnetic Resonance Spectroscopy; D008968:Molecular Conformation; D015394:Molecular Structure; D047408:gamma-Cyclodextrins / Q000138:chemical synthesis* / Q000737:chemistry
chemical_list: D003619:Dansyl Compounds; D007783:Lactones; D047408:gamma-Cyclodextrins; D003545:Cysteine; C029038:dansyl chloride