9-(3-O-phenoxythiocarbonyl-5-O-trityl-2-deoxy-2-fluoro-β-D-arabinofuranosyl)adenine

1,3-di-O-acetyl-5-O-benzoyl-2-deoxy-2-fluoro-D-arabinofuranosyl bromide

1,3-di-O-acetyl-5-O-benzoyl-2-deoxy-2-fluoro-D-arabinofuranose

5'-O-trityl-3'-O-benzoyl-2'-O-trifluoromethanesulfonyl-6-chloropurine riboside

6-chloro-9-[3-deoxy-2-O-(sulfurylimidazolyl)-5-O-(triphenylmethyl)-β-D-erythro-pentofuranosyl]-9H-purine