ethyl 3,4-di-O-acetyl-2-azido-2-deoxy-6-O-dibenzyloxyphosphoryl-1-thio-α-D-mannopyranoside

2-(benzyloxycarbonyl)aminoethyl 3,4-di-O-acetyl-2-azido-6-O-(tert-butyldimethylsilyl)-2-deoxy-α-D-mannopyranoside

ethyl 2-azido-4,6-O-benzylidene-2-deoxy-1-thio-α-D-mannopyranoside