Carbohydrates U 0500 Structure and Conformational Studies of the Disaccharides Derived from the Inner Core of the Lipopolysaccharide Isolated from Sinorhizobium freddii SMH12. -(FERNANDEZ DE CORDOBA, F. J.; RODRIGUEZ-CARVAJAL, M. A.; TEJERO-MATEO, P.; GIL-SERRANO*, A. M.; Eur.