9-(2-O-mesyl-3-deoxy-β-D-threo-pentofuranosyl)adenine

N6,O5'-bis(4,4'-dimethoxytrityl)-9-[(2R)-2-azido-2,3-dideoxy-β-D-glycero-pentofuranosyl]adenine

(2R,3S,5S)-2-(6-aminopurin-9-yl)-5-(hydroxymethyl)oxolan-3-ol

9-[5-O-(monomethoxytrityl)-3-deoxy-β-D-threo-pentofuranosyl]adenine

(2R,3S,4R,5R)-2-(6-aminopurin-9-yl)-5-(hydroxymethyl)-3-(4-methylphenyl)sulfonyloxolane-3,4-diol