Uridine, P-[(4-nitrophenyl)methyl]-2′-O-(tetrahydro-2H-pyran-2-yl)uridylyl-(3′→5′)-2′,3′-O-(ethoxymethylene)-

Uridine, 5′-O-[bis(4-methoxyphenyl)phenylmethyl]-P-(2-cyanoethyl)-2′-O-(tetrahydro-2H-pyran-2-yl)uridylyl-(3′→5′)-2′,3′-O-(ethoxymethylene)-

Adenosine, 2′-O-(tetrahydro-2H-pyran-2-yl)-P-(2,2,2-trichloroethyl)guanylyl-(3′→5′)-2′,3′-O-(ethoxymethylene)-

Adenosine, 8-(aminomethyl)-, cyclic 3′,5′-(hydrogen phosphate)

9H-Purine, 2-(4-morpholinyl)-9-(3,5-O-phosphinico-β-D-ribofuranosyl)-

9H-Purine, 9-(3,5-O-phosphinico-β-D-ribofuranosyl)-2-(1-piperidinyl)-

Guanosine, N-benzoyl-, cyclic 3′,5′-(hydrogen phosphate)

Guanosine, N-(phenylmethyl)-, cyclic 3′,5′-(hydrogen phosphate)

Xanthosine, 2-S-methyl-2-thio-, cyclic 3′,5′-(hydrogen phosphate)

Inosine, 8-[[4-(dimethylamino)phenyl]amino]-, cyclic 3′,5′-(hydrogen phosphate)

Inosine, 8-[[4-(diethylamino)phenyl]amino]-, cyclic 3′,5′-(hydrogen phosphate)

Inosine, 8-(diethylamino)-, cyclic 3′,5′-(hydrogen phosphate)

1-(2-O-Acetyl-5-O-benzoyl-3-deoxy-β-D-threo-pentofuranosyl)-4,6-dichloro-1H-imidazo[4,5-c]pyridine

Guanosine, 8-(4-morpholinyl)-, cyclic 3′,5′-(hydrogen phosphate)

Guanosine, 8-[(phenylmethyl)amino]-, cyclic 3′,5′-(hydrogen phosphate)

Guanosine, 8-(1-piperidinyl)-, cyclic 3′,5′-(hydrogen phosphate)

Uridine, 5′-[[[(4R,5R)-5-[[[5-(acetylamino)-2,6-anhydro-5,7,8-trideoxy-1,3,4-tris-O-(phenylmethyl)-D-glycero-L-gulo-octitol-8-yl]amino]carbonyl]-2-phenyl-1,3-dioxolan-4-yl]carbonyl]amino]-5′-deoxy-2′,3′-bis-O-(phenylmethyl)-

Uridine, 5′-[[[(4R,5R)-5-carboxy-2-phenyl-1,3-dioxolan-4-yl]carbonyl]amino]-5′-deoxy-2′,3′-bis-O-(phenylmethyl)-

Uridine, 5′-deoxy-5′-[[[(4R,5R)-5-(methoxycarbonyl)-2-phenyl-1,3-dioxolan-4-yl]carbonyl]amino]-2′,3′-bis-O-(phenylmethyl)-

Uridine, 5′-[[(2R,3R)-4-[[5-(acetylamino)-2,6-anhydro-5,7,8-trideoxy-D-glycero-L-gulo-octitol-8-yl]amino]-2,3-dihydroxy-1,4-dioxobutyl]amino]-5′-deoxy-