Strong Binding Affinity of <scp>d</scp>-Allulose and Allulosides to Boronic Acids and the Structural Characterization of Their Sugar-boronate Complexes
As sugars form complexes with boronicacids, some sugars are used as additives for boron-containing pharmaceuticals. The binding constants of the rare sugar D-allulose with boronicacids were measured, and these showed the highest hitherto reported binding-affinity values for sugars. An NMR study clarified that D-allulose in aqueous solution forms complexes exclusively via the reaction of the 2,3-hydroxy