5'-azido-N6-benzoyl-3'-(tert-butyloxycarbonylamino)-2'-O-(tert-butyldimethylsilyl)-3',5'-dideoxyadenosine

N6-benzoyl-2'-O-(tert-butyldimethylsilyl)-3'-(9-fluorenylmethyloxycarbonylamino)-5'-(4-monomethoxytritylamino)-3',5'-dideoxyadenosine

(2R,3R,4R,5R)-5-(6-amino-9H-purin-9-yl)-4-((tert-butyldimethylsilyl)oxy)-2-(((tert-butyldimethylsilyl)oxy)methyl)tetrahydrofuran-3-ol

2'-O-(tert-butyldimethylsilyl)-3'-(hydroxyamino)-3'-deoxyadenosine