Conformational analysis in carbohydrate chemistry. III. The 13C N.M.R. spectra of the hexuloses

Abstract

All the resonances have been assigned in the 13C N.M.R. spectra of the hexuloses and some of their derivatives by the use of specifically deuterated compounds and comparison with related compounds. The composition of the hexuloses at equilibrium in aqueous solution has been determined and is discussed in terms of conformational analysis. The synthesis of D-fructose[l-D], D-fructose[3-D] and D-fructose[4-D] is described.