title: Homolytic cleavage of the O-glycoside bond in carbohydrates: a steady-state radiolysis study.
abstract: The formation of products resulting from the O-glycoside bond cleavage following radiolysis of aqueous solutions of methyl-alpha-D-glucopyranoside (I), 3-O-methyl-alpha-D-glucopyranose (II), maltose, lactose, gentiobiose and cellobiose were studied. Radiation-induced destruction yields were also determined for dextran, laminarin and trimethylcelulose upon irradiation of their aqueous solutions. Oxygen, quinones and compounds capable of forming quinoid structures were found to inhibit radiation-induced homolytic destruction processes taking place in glycosides, di- and polysaccharides. The data obtained in this study enabled the authors to demonstrate an important role played by the fragmentation reaction of C-2 radicals which were generated from the starting substances in the formation of final radiolysis products.
authors.affiliation: Department of Chemistry, Belarusian State University, 220-050 Minsk, Belarus.
authors.forename: Irina P
authors.initials: IP
authors.lastname: Edimecheva
authors.forename: Ruslan M
authors.initials: RM
authors.lastname: Kisel
authors.forename: Oleg I
authors.initials: OI
authors.lastname: Shadyro
authors.forename: Kamel
authors.initials: K
authors.lastname: Kazem
authors.forename: Hironobu
authors.initials: H
authors.lastname: Murase
authors.forename: Tsutomu
authors.initials: T
authors.lastname: Kagiya
mesh_terms: D001665:Binding Sites / Q000528:radiation effects; D002241:Carbohydrates / Q000032:analysis / Q000737:chemistry* / Q000528:radiation effects*; D004307:Dose-Response Relationship, Radiation; D006027:Glycosides / Q000032:analysis / Q000737:chemistry* / Q000528:radiation effects*; D010100:Oxygen / Q000032:analysis / Q000737:chemistry* / Q000528:radiation effects*; D011675:Pulse Radiolysis / Q000379:methods; D011829:Radiation Dosage
chemical_list: D002241:Carbohydrates; D006027:Glycosides; D010100:Oxygen