Synonym: Methyl 2,3-didehydro-4,7,8,9-tetra-O-acetyl-N-acetyl-D-neuramidate

An advanced intermediate in the synthesis of sialidase inhibitors.¹ Deprotection with sodium methoxide in methanol gives the known sialidase inhibitor, 2-deoxy-2,3-didehydroneuraminic acid.²

1. E. J. Horn, J. P. Saludes, J. Gervay-Hague, Carb. Res. 2008, 343, 936-940.  
2. C. Dyason and M. von Itzstein, Aust. J. Chem. 2001, 54, 663-670.