N-[(Dimethylamino)methylene]-Guanosine

N-(Phenoxyacetyl)guanosine

N6-Benzoyl-2'-fluoro-2'-deoxyadenosine

N4-Acetyl-2'-fluoro-2'-deoxycytidine

N-(9-((2R,3R,4R,5R)-3-fluoro-4-hydroxy-5-(hydroxymethyl)tetrahydrofuran-2-yl)-6-oxo-6,9-dihydro-1H-purin-2-yl)isobutyramide

N4-Benzoyl-2'-fluoro-2'-deoxycytidine

N6-Benzoyl-2'-O-methyl-adenosine

N4-Acetyl-2'-O-methyl-cytidine

N2-Isobutyryl-2'-O-methyl-guanosine

N2-Dimethylformamidine-2'-O-methyl-guanosine

(2R,3R,4S,5R)-2-(6-((3-Hydroxybenzyl)amino)-9H-purin-9-yl)-5-(hydroxymethyl)tetrahydrofuran-3,4-diol