N-Fluoren-9-ylmethoxycarbonyl-protected sugar amino acids derived from α-O-methoxy-and 2, 3-dehydroneuraminic acids have been prepared. Incorporation of these monomer units into solid-phase synthesis led to the efficient synthesis of two series of oligomers varying from one to eight units in length. The (1→ 5)-linked amides of 2, 3-dehydroneuraminic acid were further subjected to hydrogenation giving a third series of oligomers with a β-hydrido ...