N-benzoyl-3',5'-di-O-levulinyl-2'-deoxyadenosine

9-(2-Deoxy-2-fluoro-α-D-arabinofuranosyl)-9H-purin-6-amine

9-(2-deoxy-2-fluoro-β-D-arabinofuranosyl)-N6 -benzoyladenine

Adenosine, 2'-deoxy-5'-O-(trimethylsilyl)-

N6-benzoyl-5’-O-trityl-2’-deoxyadenosine