Toluene-4-sulfonic acid (4R,5R)-5-((R)-1-hydroxy-2-trityloxy-ethyl)-2,2-dimethyl-[1,3]dioxolan-4-ylmethyl ester
1-amino-1-N-benzyloxy-5-N-benzyloxycarbonyl-3,4-di-O-benzyl-2,5-imino-1,2,5,6-tetradeoxy-L-iditol
6-deoxy-3,4-O-isopropylidene-5-O-methanesulfonyl-1-O-trityl-D-mannitol
5-N-benzyloxycarbonyl-3,4-di-O-benzyl-2,5-imino-2,5,6-trideoxy-L-iditol
6-deoxy-3,4-isopropylidene-5-azido-1-O-trityl-D-mannitol