3-[5-O-[Bis(4-methoxyphenyl)phenylmethyl]-3-O-[[bis(1-methylethyl)amino](2-cyanoethoxy)phosphino]-2-deoxy-β-D-erythro-pentofuranosyl]-3,7-dihydropyrido[2,3-d]pyrimidin-2(1H)-one

3-[5-O-[Bis(4-methoxyphenyl)phenylmethyl]-2-deoxy-β-D-erythro-pentofuranosyl]-3,7-dihydropyrido[2,3-d]pyrimidin-2(1H)-one

Uridine, 5′-O-[bis(4-methoxyphenyl)phenylmethyl]-2′-deoxy-5-[(1Z)-3-[(trifluoroacetyl)amino]-1-propenyl]-

Adenosine, 5′-[(S)-[(3S)-3-amino-3-carboxypropyl][4-[[4-[[(1,1-dimethylethoxy)carbonyl]amino]-1-oxobutyl]amino]-2-butynyl]sulfonio]-5′-deoxy-, inner salt

Cytidine, 2′-deoxyguanylyl-(3′→5′)-5-[4-[(4-amino-1-oxobutyl)amino]-2-butynyl]-2′-deoxycytidylyl-(3′→5′)-2′-deoxyguanylyl-(3′→5′)-2′-deoxy-

Adenosine, thymidylyl-(3′→5′)-2′-deoxycytidylyl-(3′→5′)-2′-deoxyguanylyl-(3′→5′)-N-[4-[(4-amino-1-oxobutyl)amino]-2-butynyl]-2′-deoxy-

Adenosine, 5′-[(R)-[(3S)-3-amino-3-carboxypropyl][4-[[4-[[(1,1-dimethylethoxy)carbonyl]amino]-1-oxobutyl]amino]-2-butynyl]sulfonio]-5′-deoxy-, inner salt

5′-[(R)-[(3S)-3-Amino-3-carboxypropyl][4-[(4-amino-1-oxobutyl)amino]-2-butyn-1-yl]sulfonio]-5′-deoxyadenosine

Adenosine, 5′-[(R)-[(3S)-3-amino-3-carboxypropyl](phenylmethyl)sulfonio]-5′-deoxy-, inner salt

Adenosine, 5′-[(R)-[(3S)-3-amino-3-carboxypropyl]-2-pentyn-1-ylsulfonio]-5′-deoxy-, inner salt

Adenosine, 5′-[(R)-[(3S)-3-amino-3-carboxypropyl]-2-propyn-1-ylsulfonio]-5′-deoxy-, inner salt

N′-[7-[5-O-[Bis(4-methoxyphenyl)phenylmethyl]-3-O-[[bis(1-methylethyl)amino](2-cyanoethoxy)phosphino]-2-deoxy-β-D-erythro-pentofuranosyl]-5-iodo-7H-pyrrolo[2,3-d]pyrimidin-4-yl]-N,N-dimethylethanimidamide

N′-[7-[5-O-[Bis(4-methoxyphenyl)phenylmethyl]-3-O-[[bis(1-methylethyl)amino](2-cyanoethoxy)phosphino]-2-deoxy-β-D-erythro-pentofuranosyl]-7H-pyrrolo[2,3-d]pyrimidin-4-yl]-N,N-dimethylethanimidamide

2-Amino-5-(2-deoxy-β-D-erythro-pentofuranosyl)-3,5-dihydro-7-(1-propyn-1-yl)-4H-pyrrolo[3,2-d]pyrimidin-4-one

Uridine, 5′-O-[bis(4-methoxyphenyl)phenylmethyl]-2′-O-[(1,1-dimethylethyl)dimethylsilyl]-, 3′-[4-nitrophenyl (S)-phosphonate]

Uridine, 5′-O-[bis(4-methoxyphenyl)phenylmethyl]-2′-O-[(1,1-dimethylethyl)dimethylsilyl]-, 3′-[4-chlorophenyl (S)-phosphonate]

Uridine, 5′-O-[bis(4-methoxyphenyl)phenylmethyl]-2′-O-[(1,1-dimethylethyl)dimethylsilyl]-, 3′-[ethyl (S)-phosphonate]

Uridine, 5′,5′′′-dithiobis[5′-deoxy-3-(hydroxyphenylmethyl)-2′,3′-O-(1-methylethylidene)-

Uridine, 3-(hydroxyphenylmethyl)-2′,3′-O-(1-methylethylidene)-5′-thio-

Uridine, 2′-deoxy-5′-O-(4,6-dihydroxy-4,6-dioxido-1,3,5,2,4,6-trioxatriphosphorinan-2-yl)-5-(1-propynyl)-, 3′-acetate