Compound 11

Methyl 5-acetamido-4,7,8,9-tetra-O-acetyl-3,5-dideoxy-3-C-(prop-2'-enyl)-D-erythro-β-L-gluco-non-2-ulopyranosyl chloride

From: Novel sialic acid derivatives lock open the 150-loop of an influenza A virus group-1 sialidase