6-chloro-9-(3-O-acetyl-5-O-benzoyl-2-deoxy-2-fluoro-β-D-arabinofuranosyl)-9H-purine

9-(5-O-acetyl-3-deoxy-β-D-erythro-pentofuranosyl)-6-chloro-9H-purine

6-chloro-9-(3-O-benzoyl-β-D-ribofuranosyl)purine

(3R,5S)-3-fluoro-5-(p-toluoyloxymethyl)-2-tetrahydrofuranone

(3R,5S,5S)-2-acetoxy-3-fluoro-5-(p-toluoyloxymethyl)tetrahydrofuran