Synthesis of 4-azido-NeuAc containing sialosides and thiosialosides ha
s been developed via the hydrochlorination of an 4-azidoglycal. The az
idosialosides have been converted into the amino and acetamidosialosid
es. Two of the aminosialosides show potent inhibition (K-i = 50-150 mu
M) of influenza neuraminidase.