... B,O-3 and O-4 of residue C, O-3 of residue D,O-4andO- 6of residues E and F, O-6 of residue G, O-5 and O-4 of residueL,whereasI was a terminal residue. In the high field region of the spectrum ... absence of anomericsignals from GlcN I and GlcN II of Lipid A, the lack of pyruvate methyl groups, as a consequence of the cleavage of the ketal group under acid treatment, and the presence of singlet ... Evaluation of chemical shifts and of 3JH,Hcoupling constants led toidentification of residues Hep (U), 7-O-carbamoyl-Hep (V),GalN (X), GlcN (W), Glc (Z).Fig. 4. Sections of the high field region of...