title: Synthesis of the tetrasaccharide repeating-unit of the lipopolysaccharide isolated from Pseudomonas maltophilia.
abstract: The title tetrasaccharide having the structure 3-O-Me-beta-L-Xylp-(1----4)- alpha-L-Rhap-(1----4)-alpha-L-Rhap-(1----2)-L-Rhap was obtained by reaction of the alpha-acetobromo derivative of 4-O-(3-O-methyl-beta-L-xylopyranosyl)-L-rhamnopyranose and benzyl 3,4-di-O-benzyl-2-O-(2,3-O-isopropylidene-alpha-L-rhamnopyranosyl)- alpha-L-rhamnopyranoside, followed by removal of the protecting groups. The synthesised compounds were characterised on the basis of n.m.r. data.
mesh_terms: D002240:Carbohydrate Sequence; D002855:Chromatography, Thin Layer; D007202:Indicators and Reagents; D008070:Lipopolysaccharides / Q000138:chemical synthesis* / Q000302:isolation & purification; D009682:Magnetic Resonance Spectroscopy; D009844:Oligosaccharides / Q000138:chemical synthesis*; D011549:Pseudomonas / Q000276:immunology*
chemical_list: D007202:Indicators and Reagents; D008070:Lipopolysaccharides; D009844:Oligosaccharides