The straightforward syntheses of six regioisomeric mono- and difluorinated D-manno-heptulose and Kamusol analogues, which use electrophilic or nucleophilic fluorinaton, are reported. D-manno-Heptulose shows attractive pharmacological properties in vivo, such as antitumour activity, as well as binding to and accumulating in pancreatic beta cells to induce hyperglycemia. The synthesised analogues represent