5′-O-[Bis(4-methoxyphenyl)phenylmethyl]-P-deoxy-P-selenothymidylyl-(3′→3′)-5′-O-[bis(4-methoxyphenyl)phenylmethyl]thymidine

5′-O-[Bis(4-methoxyphenyl)phenylmethyl]-P-deoxo-P(O)-(2,2-dimethyl-1-oxopropyl)thymidylyl-(3′→5′)-3′-O-[bis(4-methoxyphenyl)phenylmethyl]thymidine

Thymidine, 5′-O-[bis(4-methoxyphenyl)phenylmethyl]-P(O)-[3′-O-[bis(4-methoxyphenyl)phenylmethyl]-5′-deoxythymidin-5′-yl]-P-deoxothymidylyl-(3′→5′)-3′-O-[bis(4-methoxyphenyl)phenylmethyl]-

Thymidine, 5′-O-[bis(4-methoxyphenyl)phenylmethyl]-, 3′-[P,P-bis(2,2-dimethyl-1-oxopropyl)phosphinoselenoate]

5′-O-[Bis(4-methoxyphenyl)phenylmethyl]-P-deoxy-P-(2,2-dimethyl-1-oxopropyl)-P-selenothymidylyl-(3′→5′)-3′-O-[bis(4-methoxyphenyl)phenylmethyl]thymidine

5′-O-[Bis(4-methoxyphenyl)phenylmethyl]-P-chloro-P-deoxy-P-selenothymidylyl-(3′→5′)-3′-O-[bis(4-methoxyphenyl)phenylmethyl]thymidine

5′-O-[Bis(4-methoxyphenyl)phenylmethyl]-P-deoxy-P-fluoro-P-selenothymidylyl-(3′→5′)-3′-O-[bis(4-methoxyphenyl)phenylmethyl]thymidine

5′-O-[Bis(4-methoxyphenyl)phenylmethyl]-P,P-diselenothymidylyl-(3′→5′)-3′-O-[bis(4-methoxyphenyl)phenylmethyl]thymidine

Cytidine, 2′-O-[[3-(acetyloxy)propoxy]methyl]-N-benzoyl-5′-O-[(4-methoxyphenyl)diphenylmethyl]-, 3′-[2-cyanoethyl N,N-bis(1-methylethyl)phosphoramidite]

Uridine, 2′-O-[[3-(acetyloxy)propoxy]methyl]-5′-O-[(4-methoxyphenyl)diphenylmethyl]-, 3′-[2-cyanoethyl N,N-bis(1-methylethyl)phosphoramidite]

Cytidine, 2′-O-[[2-(acetyloxy)ethoxy]methyl]-N-benzoyl-5′-O-[(4-methoxyphenyl)diphenylmethyl]-, 3′-[2-cyanoethyl N,N-bis(1-methylethyl)phosphoramidite]

Uridine, 2′-O-[[2-(acetyloxy)ethoxy]methyl]-5′-O-[(4-methoxyphenyl)diphenylmethyl]-, 3′-[2-cyanoethyl N,N-bis(1-methylethyl)phosphoramidite]

2′-O-[[3-(Acetyloxy)propoxy]methyl]-N-benzoyl-5′-O-[(4-methoxyphenyl)diphenylmethyl]cytidine

2′-O-[[3-(Acetyloxy)propoxy]methyl]-5′-O-[(4-methoxyphenyl)diphenylmethyl]uridine

2′-O-[[2-(Acetyloxy)ethoxy]methyl]-N-benzoyl-5′-O-[(4-methoxyphenyl)diphenylmethyl]cytidine

2′-O-[[2-(Acetyloxy)ethoxy]methyl]-5′-O-[(4-methoxyphenyl)diphenylmethyl]uridine

2′-O-[(3-Hydroxypropoxy)methyl]cytidine

2′-O-[(3-Hydroxypropoxy)methyl]uridine

2′-O-[(2-Hydroxyethoxy)methyl]cytidine

2′-O-[(2-Hydroxyethoxy)methyl]uridine