ethyl 4-deoxy-6-O-tert-butyldiphenylsilyl-1-thio-α-D-lyxo-hexopyranoside

ethyl 2,4,6-tri-O-benzyl-3-O-[3-(tert-butoxy)-1,3-dioxopropyl]-1-thio-α-D-mannopyranoside

benzyl 2-O-benzoyl-4,6-O-benzylidene-3-O-[3-(ethyl 2,4,6-tri-O-benzyl-1-thio-α-D-mannopyranosid-3-O-yl)-1,3-dioxopropyl]-α-D-glucopyranoside