Abstract 2-Amino-2, 4-dideoxy-4-fluoro-and 2-amino-2, 4, 6-trideoxy-4, 6-difluoro-d- galactose, and 2-amino-2, 4-dideoxy-4-fluoro-and 2-amino-4-deoxy-4, 4-difluoro-d-xylo- hexose were synthesized, as potential modifiers of tumor cell-surface glycoconjugate, from benzyl 2-acetamido-3-O-benzyl-2-deoxy-4, 6-di-O-mesyl-α-d-glucopyranoside and benzyl 2- acetamido-3, 6-di-O-benzyl-2-deoxy-4-O-mesyl-α-d-glucopyranoside, which were ...