title: Stereocontrolled Photoinduced Glycosylation Using an Aryl Thiourea as an Organo photoacid.
abstract: Photoinduced glycosylation of alcohols with α-glucosyl trichloroacetimidates, using aryl urea and thioureas as organo photoacids, was examined under long wavelength UV (ultraviolet) irradiation. The results show, for the first time, that such glycosylations proceed effectively to give the corresponding glycosides in high yields. In addition, high β-stereoselectivity was obtained under high concentration conditions, whereas high α-stereoselectivity was realized under low concentration conditions.
authors.affiliation: Department of Applied Chemistry, Faculty of Science and Technology, Keio University , 3-14-1 Hiyoshi, Kohoku-ku, Yokohama 223-8522, Japan.
authors.forename: Tomoya
authors.initials: T
authors.lastname: Kimura
authors.affiliation: Department of Applied Chemistry, Faculty of Science and Technology, Keio University , 3-14-1 Hiyoshi, Kohoku-ku, Yokohama 223-8522, Japan.
authors.forename: Takahiro
authors.initials: T
authors.lastname: Eto
authors.affiliation: Department of Applied Chemistry, Faculty of Science and Technology, Keio University , 3-14-1 Hiyoshi, Kohoku-ku, Yokohama 223-8522, Japan.
authors.forename: Daisuke
authors.initials: D
authors.lastname: Takahashi
authors.affiliation: Department of Applied Chemistry, Faculty of Science and Technology, Keio University , 3-14-1 Hiyoshi, Kohoku-ku, Yokohama 223-8522, Japan.
authors.forename: Kazunobu
authors.initials: K
authors.lastname: Toshima