NMR studies of molybdate complexes of D-erythro-L-manno-octose and D-erythro-L-gluco-octose and their alditols

Different amounts and various types of bis-dinuclear tetradentate molybdate complexes of D-erythro-L-manno-octose, D-erythro-L-gluco-octose, D-erythro-L-manno-octitol and D-erythro-L-gluco-octitol were characterized by 1H and 13C NMR spectroscopy in aqueous solutions. Detailed analysis of 1H-(1)H coupling constants and NOEs, together with chemical shifts, allowed characterization of the different isomers of these complexes.