1-(3-azido-2,3-dideoxy-5,6-O-isopropylidene-β-D-ribo-hexofuranosyl)thymine

1,2-O-isopropylidene-3-O-methanesulfonyl-α-D-allofuranose

2,3'-anhydro-1-(5',6'-di-O-benzoyl-β-D-glucofuranosyl)thymine

5,6-di-O-benzoyl-3-O-mesyl-1,2-isopropylidene-α-D-allofuranose