methyl 6-azido-2-benzyloxycarbonylamino-2,3,4,6,7-pentadeoxy-β-L-lyxo-heptopyranoside

methyl 2-benzyloxycarbonylamino-2,3,4,7-tetradeoxy-6-O-(methylsulfonyl)-α-D-ribo-heptopyranoside

methyl 6-azido-2,3,4,6,7-pentadeoxy-2-phthalimido-α-D-ribo-heptopyranoside

methyl 2,3,4,7-tetradeoxy-6-O-(methylsulfonyl)-2-phthalimido-β-L-lyxo-heptopyranoside