[P(R)]-5′-O-[Bis(4-methoxyphenyl)phenylmethyl]thymidylyl-(3′→5′-8′)-6′,7′,8′-trideoxy-2′-O-(2-methoxyethyl)-3′-O-(phenylmethyl)-β-D-allo-octofuranocytidine

[P(R)]-5′-O-[Bis(4-methoxyphenyl)phenylmethyl]thymidylyl-(3′→5′-8′)-6′,7′,8′-trideoxy-2′-O-methyl-3′-O-(phenylmethyl)-β-D-allo-octofuranocytidine

[P(R)]-5′-O-[Bis(4-methoxyphenyl)phenylmethyl]thymidylyl-(3′→5′-8′)-6′,7′,8′-trideoxy-2′-O-[2-(methylamino)-2-oxoethyl]-3′-O-(phenylmethyl)-β-D-allo-octofuranoguanosine

[P(R)]-5′-O-[Bis(4-methoxyphenyl)phenylmethyl]thymidylyl-(3′→5′-8′)-6′,7′,8′-trideoxy-2′-O-(2-methoxyethyl)-3′-O-(phenylmethyl)-β-D-allo-octofuranoguanosine

[P(R)]-5′-O-[Bis(4-methoxyphenyl)phenylmethyl]thymidylyl-(3′→5′-8′)-6′,7′,8′-trideoxy-2′-O-methyl-3′-O-(phenylmethyl)-β-D-allo-octofuranoguanosine

[P(R)]-5′-O-[Bis(4-methoxyphenyl)phenylmethyl]thymidylyl-(3′→5′-8′)-6′,7′,8′-trideoxy-5-methyl-2′-O-[2-(methylamino)-2-oxoethyl]-3′-O-(phenylmethyl)-β-D-allo-octofuranouridine

[P(R)]-5′-O-[Bis(4-methoxyphenyl)phenylmethyl]thymidylyl-(3′→5′-8′)-6′,7′,8′-trideoxy-2′-O-(2-methoxyethyl)-5-methyl-3′-O-(phenylmethyl)-β-D-allo-octofuranouridine

[P(R)]-5′-O-[Bis(4-methoxyphenyl)phenylmethyl]thymidylyl-(3′→5′-8′)-6′,7′,8′-trideoxy-5-methyl-2′-O-methyl-3′-O-(phenylmethyl)-β-D-allo-octofuranouridine

[P(R)]-5′-O-[Bis(4-methoxyphenyl)phenylmethyl]thymidylyl-(3′→5′-8′)-6′,7′,8′-trideoxy-2′-O-[2-(methylamino)-2-oxoethyl]-3′-O-(phenylmethyl)-β-D-allo-octofuranoadenosine

[P(R)]-5′-O-[Bis(4-methoxyphenyl)phenylmethyl]thymidylyl-(3′→5′-8′)-6′,7′,8′-trideoxy-2′-O-(2-methoxyethyl)-3′-O-(phenylmethyl)-β-D-allo-octofuranoadenosine

5′-O-[Bis(4-methoxyphenyl)phenylmethyl]-P(O)-(2-cyanoethyl)-P-deoxothymidylyl-(3′→5′)-7′-bromo-6′,7′-dideoxy-2′-O-[2-(methylamino)-2-oxoethyl]-3′-O-(phenylmethyl)-β-D-allo-heptofuranocytidine

5′-O-[Bis(4-methoxyphenyl)phenylmethyl]-P(O)-(2-cyanoethyl)-P-deoxothymidylyl-(3′→5′)-7′-bromo-6′,7′-dideoxy-2′-O-(2-methoxyethyl)-3′-O-(phenylmethyl)-β-D-allo-heptofuranocytidine

5′-O-[Bis(4-methoxyphenyl)phenylmethyl]-P(O)-(2-cyanoethyl)-P-deoxothymidylyl-(3′→5′)-7′-bromo-6′,7′-dideoxy-2′-O-methyl-3′-O-(phenylmethyl)-β-D-allo-heptofuranocytidine

5′-O-[Bis(4-methoxyphenyl)phenylmethyl]-P(O)-(2-cyanoethyl)-P-deoxothymidylyl-(3′→5′)-7′-bromo-6′,7′-dideoxy-2′-O-[2-(methylamino)-2-oxoethyl]-3′-O-(phenylmethyl)-β-D-allo-heptofuranoguanosine

5′-O-[Bis(4-methoxyphenyl)phenylmethyl]-P(O)-(2-cyanoethyl)-P-deoxothymidylyl-(3′→5′)-7′-bromo-6′,7′-dideoxy-2′-O-(2-methoxyethyl)-3′-O-(phenylmethyl)-β-D-allo-heptofuranoguanosine

5′-O-[Bis(4-methoxyphenyl)phenylmethyl]-P(O)-(2-cyanoethyl)-P-deoxothymidylyl-(3′→5′)-7′-bromo-6′,7′-dideoxy-2′-O-methyl-3′-O-(phenylmethyl)-β-D-allo-heptofuranoguanosine

5′-O-[Bis(4-methoxyphenyl)phenylmethyl]-P(O)-(2-cyanoethyl)-P-deoxothymidylyl-(3′→5′)-7′-bromo-6′,7′-dideoxy-5-methyl-2′-O-[2-(methylamino)-2-oxoethyl]-3′-O-(phenylmethyl)-β-D-allo-heptofuranouridine

5′-O-[Bis(4-methoxyphenyl)phenylmethyl]-P(O)-(2-cyanoethyl)-P-deoxothymidylyl-(3′→5′)-7′-bromo-6′,7′-dideoxy-2′-O-(2-methoxyethyl)-5-methyl-3′-O-(phenylmethyl)-β-D-allo-heptofuranouridine

5′-O-[Bis(4-methoxyphenyl)phenylmethyl]-P(O)-(2-cyanoethyl)-P-deoxothymidylyl-(3′→5′)-7′-bromo-6′,7′-dideoxy-5-methyl-2′-O-methyl-3′-O-(phenylmethyl)-β-D-allo-heptofuranouridine

5′-O-[Bis(4-methoxyphenyl)phenylmethyl]-P(O)-(2-cyanoethyl)-P-deoxothymidylyl-(3′→5′)-7′-bromo-6′,7′-dideoxy-2′-O-[2-(methylamino)-2-oxoethyl]-3′-O-(phenylmethyl)-β-D-allo-heptofuranoadenosine