5′-O-[Bis(4-methoxyphenyl)phenylmethyl]-2′-deoxy-5-[3-[[(2S)-1-oxo-2-[(1-pyrenylcarbonyl)amino]-6-[(2,2,2-trifluoroacetyl)amino]hexyl]amino]-1-propyn-1-yl]uridine

Uridine, 5-[3-[(2-anthracenylcarbonyl)amino]-1-propyn-1-yl]-5′-O-[bis(4-methoxyphenyl)phenylmethyl]-2′-deoxy-, 3′-[2-cyanoethyl N,N-bis(1-methylethyl)phosphoramidite]

5-[3-[(2-Anthracenylcarbonyl)amino]-1-propyn-1-yl]-5'-O-[bis(4-methoxyphenyl)phenylmethyl]-2'-deoxyuridine

2′-Deoxycytidylyl-(3′→5′)-thymidylyl-(3′→5′)-2′-deoxyguanylyl-(3′→5′)-2′-deoxyguanylyl-(3′→5′)-2′-deoxyadenosine

2′-Deoxycytidylyl-(3′→5′)-2′-deoxyadenylyl-(3′→5′)-2′-deoxyadenylyl-(3′→5′)-2′-deoxyadenylyl-(3′→5′)-2′-deoxyadenylyl-(3′→5′)-2′-deoxyguanosine

2-[1,2-Dihydro-1-[5-O-[hydroxy[[hydroxy(phosphonooxy)phosphinyl]oxy]phosphinyl]-β-D-ribofuranosyl]-2-oxo-4-pyrimidinyl]hydrazinecarboxamide

2′-Deoxyguanylyl-(3′→5′)-2′-deoxyguanylyl-(3′→5′)-thymidylyl-(3′→5′)-2′-deoxyadenylyl-(3′→5′)-2′-deoxyguanylyl-(3′→5′)-2′-deoxycytidylyl-(3′→5′)-2′-deoxyguanylyl-(3′→5′)-2′-deoxyadenosine

Uridine, 5-(3,3-dimethyl-1-butyn-1-yl)-

5-(4-Methyl-1-pentyn-1-yl)uridine

5-(1-Hexyn-1-yl)uridine

5′-O-(1-Hydroxy-13-mercapto-13-methyl-1-oxido-9-oxo-2,10-oxa-8-aza-1-phosphatetradec-1-yl)thymidylyl-(3′→5′)-thymidylyl-(3′→5′)-thymidylyl-(3′→5′)-thymidylyl-(3′→5′)-thymidine

3′-O-[11-[Bis(1-methylethyl)amino]-14-cyano-4,4-dimethyl-10,12-dioxa-2,3-dithia-11-phosphatetradec-1-yl]-5′-O-[(4-methoxyphenyl)diphenylmethyl]thymidine

3′-O-[16-[Bis(1-methylethyl)amino]-19-cyano-4,4-dimethyl-8-oxo-7,15,17-trioxa-2,3-dithia-9-aza-16-phosphanonadec-1-yl]-5′-O-[(4-methoxyphenyl)diphenylmethyl]thymidine

3′-O-[8-[Bis(1-methylethyl)amino]-11-cyano-4,4-dimethyl-7,9-dioxa-2,3-dithia-8-phosphaundec-1-yl]-5′-O-[(4-methoxyphenyl)diphenylmethyl]thymidine

3′-O-[[(6-Hydroxy-1,1-dimethylhexyl)dithio]methyl]-5′-O-[(4-methoxyphenyl)diphenylmethyl]thymidine

3′-O-[[[3-[[[(5-Hydroxypentyl)amino]carbonyl]oxy]-1,1-dimethylpropyl]dithio]methyl]-5′-O-[(4-methoxyphenyl)diphenylmethyl]thymidine

3′-O-[[(3-Hydroxy-1,1-dimethylpropyl)dithio]methyl]-5′-O-[(4-methoxyphenyl)diphenylmethyl]thymidine

3′-O-[11-[Bis(1-methylethyl)amino]-14-cyano-10,12-dioxa-2,3-dithia-11-phosphatetradec-1-yl]-5′-O-[(4-methoxyphenyl)diphenylmethyl]thymidine

3′-O-[[(6-Hydroxyhexyl)dithio]methyl]-5′-O-[(4-methoxyphenyl)diphenylmethyl]thymidine

5′-O-[(4-Methoxyphenyl)diphenylmethyl]-3′-O-[(methylthio)methyl]thymidine