... anion-exchange chromatography (HPAEC) of this f raction yield-ed oligosaccharides 1 (4 mg, 5% of the LPS) and 2 (10 mg ,12.5% of the LP S), and two stereoisomers of 1 and 2 inminor amounts that differed ... characteristic forfuranoses, and from the vicinal proton coupling c onstants(Tables 1 and 2). NOE contacts between H-1 of DGlcpNAFandH-3ax,H-3eq, H-4 and H-5 of one of the Kdoresidues identi®ed ... HMBCspectrum of heptasacch aride 3, namely between proton C4 and carbon D2, C5 and E2, and F1 and E4. The signals of the anomeric carbons in Kdo residues were assigned on thebasis of the intraresidual...