Guanosine, N-[[2-(4-nitrophenyl)ethoxy]carbonyl]-2′-O-[1-[[4-[[[2-(4-nitrophenyl)ethoxy]carbonyl]oxy]phenyl]methoxy]ethyl]-6-O-[2-(4-nitrophenyl)ethyl]-

Adenosine, N-[[2-(4-nitrophenyl)ethoxy]carbonyl]-2′-O-[1-(phenylmethoxy)ethyl]-

Cytidine, N-[[2-(4-nitrophenyl)ethoxy]carbonyl]-2′-O-[1-(phenylmethoxy)ethyl]-

Guanosine, N-[[2-(4-nitrophenyl)ethoxy]carbonyl]-6-O-[2-(4-nitrophenyl)ethyl]-2′-O-[1-(phenylmethoxy)ethyl]-

Adenosine, 2′-O-[1-[[3-fluoro-4-[[[2-(4-nitrophenyl)ethoxy]carbonyl]oxy]phenyl]methoxy]ethyl]-N-[[2-(4-nitrophenyl)ethoxy]carbonyl]-3′,5′-O-[1,1,3,3-tetrakis(1-methylethyl)-1,3-disiloxanediyl]-

Adenosine, N-[[2-(4-nitrophenyl)ethoxy]carbonyl]-2′-O-[1-[[4-[[[2-(4-nitrophenyl)ethoxy]carbonyl]oxy]phenyl]methoxy]ethyl]-3′,5′-O-[1,1,3,3-tetrakis(1-methylethyl)-1,3-disiloxanediyl]-

Cytidine, 2′-O-[1-[[3-fluoro-4-[[[2-(4-nitrophenyl)ethoxy]carbonyl]oxy]phenyl]methoxy]ethyl]-N-[[2-(4-nitrophenyl)ethoxy]carbonyl]-3′,5′-O-[1,1,3,3-tetrakis(1-methylethyl)-1,3-disiloxanediyl]-

Cytidine, N-[[2-(4-nitrophenyl)ethoxy]carbonyl]-2′-O-[1-[[4-[[[2-(4-nitrophenyl)ethoxy]carbonyl]oxy]phenyl]methoxy]ethyl]-3′,5′-O-[1,1,3,3-tetrakis(1-methylethyl)-1,3-disiloxanediyl]-

Guanosine, 2′-O-[1-[[3-fluoro-4-[[[2-(4-nitrophenyl)ethoxy]carbonyl]oxy]phenyl]methoxy]ethyl]-N-[[2-(4-nitrophenyl)ethoxy]carbonyl]-6-O-[2-(4-nitrophenyl)ethyl]-3′,5′-O-[1,1,3,3-tetrakis(1-methylethyl)-1,3-disiloxanediyl]-

Guanosine, N-[[2-(4-nitrophenyl)ethoxy]carbonyl]-2′-O-[1-[[4-[[[2-(4-nitrophenyl)ethoxy]carbonyl]oxy]phenyl]methoxy]ethyl]-6-O-[2-(4-nitrophenyl)ethyl]-3′,5′-O-[1,1,3,3-tetrakis(1-methylethyl)-1,3-disiloxanediyl]-

Adenosine, N-[[2-(4-nitrophenyl)ethoxy]carbonyl]-2′-O-[1-(phenylmethoxy)ethyl]-3′,5′-O-[1,1,3,3-tetrakis(1-methylethyl)-1,3-disiloxanediyl]-

Cytidine, N-[[2-(4-nitrophenyl)ethoxy]carbonyl]-2′-O-[1-(phenylmethoxy)ethyl]-3′,5′-O-[1,1,3,3-tetrakis(1-methylethyl)-1,3-disiloxanediyl]-

Guanosine, N-[[2-(4-nitrophenyl)ethoxy]carbonyl]-6-O-[2-(4-nitrophenyl)ethyl]-2′-O-[1-(phenylmethoxy)ethyl]-3′,5′-O-[1,1,3,3-tetrakis(1-methylethyl)-1,3-disiloxanediyl]-

Guanosine, 2′-deoxyguanylyl-(3′→5′)-2′-deoxycytidylyl-(3′→5′)-2′-deoxyguanylyl-(3′→5′)-thymidylyl-(3′→5′)-thymidylyl-(3′→5′)-2′-deoxyadenylyl-(3′→5′)-2′-deoxy-

Adenosine, 2′-deoxyguanylyl-(3′→5′)-2′-deoxyguanylyl-(3′→5′)-2′-deoxyguanylyl-(3′→5′)-2′-deoxyguanylyl-(3′→5′)-thymidylyl-(3′→5′)-2′-deoxycytidylyl-(3′→5′)-2′-deoxyadenylyl-(3′→5′)-2′-deoxy-

Guanosine, P-[[2-[(2-aminoethyl)dithio]ethyl]amino]-P,2′-dideoxyguanylyl-(3′→5′)-2′-deoxy-

Guanosine, P-[[2-[[2-(acetylamino)ethyl]dithio]ethyl]amino]-5′-O-[bis(4-methoxyphenyl)phenylmethyl]-P,2′-dideoxy-N-(2-methyl-1-oxopropyl)guanylyl-(3′→5′)-2′-deoxy-N-(2-methyl-1-oxopropyl)-, 3′-acetate

Guanosine, 5′-O-[bis(4-methoxyphenyl)phenylmethyl]-P,2′-dideoxy-N-(2-methyl-1-oxopropyl)guanylyl-(3′→5′)-2′-deoxy-N-(2-methyl-1-oxopropyl)-, 3′-acetate

Guanosine, P,2′-dideoxy-P-[(2-mercaptoethyl)amino]guanylyl-(3′→5′)-2′-deoxy-

Glycine, glycyl-L-seryl-, 1→P-amide with P-[[2-[(carboxymethyl)thio]ethyl]amino]-P,2′-dideoxyguanylyl-(3′→5′)-2′-deoxyguanosine