title: [Synthesis of a repeating unit and the dimer of the repeating unit of the major chain of Shigella flexneri O-antigen polysaccharide].
abstract: Methyl glycoside of the tetrasaccharide GlcNAc(beta 1-2)Rha(alpha 1-2)Rha(alpha 1-3)Rha, which represents a repeating unit of the basic chain of Shigella flexneri O-antigenic polysaccharides, was synthesized using acylated monosaccharide synthons. A dimer of the repeating unit, octasaccharide [GlcNAc(beta 1-2)Rha(alpha 1-2) Rha(alpha 1-3)Rha(alpha 1-3)]2-OMe was obtained by TrClO4-catalyzed condensation of two tetrasaccharide blocks.
mesh_terms: D000942:Antigens, Bacterial / Q000032:analysis*; D002236:Carbohydrate Conformation; D055598:Chemical Phenomena; D002621:Chemistry; D019081:O Antigens; D011135:Polysaccharides, Bacterial / Q000138:chemical synthesis* / Q000276:immunology; D012763:Shigella flexneri / Q000276:immunology*
chemical_list: D000942:Antigens, Bacterial; D019081:O Antigens; D011135:Polysaccharides, Bacterial
vernacular_title: Sintez povtoriaiushchegosia zvena i dimera povtoriaiushchegosia zvena osnovnoĭ tsepi O-antigennykh polisakharidov Shigella flexneri.