benzyl 4,6-O-benzylidene-2-benzyloxyacetamido-2-deoxy-α-D-glucopyranoside

benzyloxyacetic anhydride

(R)-2-[(4aR,6S,7R,8R,8aS)-6-Benzyloxy-7-(2-benzyloxy-acetylamino)-2-phenyl-hexahydro-pyrano[3,2-d][1,3]dioxin-8-yloxy]-propionic acid 3,5-dioxo-4-aza-tricyclo[5.2.1.02,6]dec-8-en-4-yl ester

L-leucinyl-D-isoglutamine benzyl ester

benzyl 4,6-O-benzylidene-2-amino-2-deoxy-α-D-glucopyranoside