methyl 4,7,8,9-tetra-O-acetyl-2,6-anhydro-5-(2,2,3,3,3-pentafluoropropionamido)-3,5-dideoxy-D-glycero-D-talonon-2-enonate

methyl 4,7,8,9-tetra-O-acetyl-2,6-anhydro-3,5-dideoxy-5-(2,2,3,3,4,4,4-heptafluorobutanamido)-D-glycero-D-talonon-2-enonate

methyl 4-acetamido-2,6-anhydro-5-(2,2,3,3,3-pentafluoropropanamido)-7,8,9-tri-O-acetyl-3,4,5-trideoxy-D-glycero-D-talonon-2-enonate

methyl 4-acetamido-2,6-anhydro-5-(2,2,3,3,4,4,4-heptafluorobutanamido)-7,8,9-tri-O-acetyl-3,4,5-trideoxy-D-glycero-D-talonon-2-enonate

methyl 5-acetamido-7,8,9-tri-O-acetyl-2,6-anhydro-4-isopropylamino-3,4,5-trideoxy-D-glycero-D-galacto-non-2-enonate