1,4-bis[2-(2-quinoxaloyloxy)ethyl 4-O-tert-butyldimethylsilyl-2,3,6-trideoxy-3-N-p-nitrobenzenesulfonylamino-α-D-arabino-hexopyranosid-3-ylmethyl]benzene

2-tert-butyldimethylsilyloxyethyl 3-azido-2,3,6-trideoxy-β-D-arabino-hexopyranoside

2-tert-butyldimethylsilyloxyethyl 3-azido-2,3,6-trideoxy-α-D-arabino-hexopyranoside