4-Deoxy-D-erythro-pentose

Acetic acid (3S,4R)-4-acetoxy-2-chloro-tetrahydro-pyran-3-yl ester

9-(3-amino-3,4-didesoxy-β-L-erythro-pentopyranosyl)-6-dimethylaminopurine

dimethylamino-6-(desoxy-4'-α-D,L-threo-pentopyranosyl)-9-purine