1-[3-O-[[Bis(1-methylethyl)amino](2-cyanoethoxy)phosphino]-5,6-dideoxy-6,6-bis(diethoxyphosphinyl)-2-O-(2-methoxyethyl)-β-D-ribo-hexofuranosyl]-5-methyl-2,4(1H,3H)-pyrimidinedione

1-[5,6-Dideoxy-6,6-bis(diethoxyphosphinyl)-2-O-(2-methoxyethyl)-β-D-ribo-hexofuranosyl]-5-methyl-2,4(1H,3H)-pyrimidinedione

1-[5,6-Dideoxy-6,6-bis(diethoxyphosphinyl)-2-O-(2-methoxyethyl)-β-D-ribo-hexofuranosyl]-5-methyl-3-[(phenylmethoxy)methyl]-2,4(1H,3H)-pyrimidinedione

1-[5,6-Dideoxy-6,6-bis(diethoxyphosphinyl)-2-O-(2-methoxyethyl)-3-O-(2-naphthalenylmethyl)-β-D-ribo-hexofuranosyl]-5-methyl-3-[(phenylmethoxy)methyl]-2,4(1H,3H)-pyrimidinedione

Uridine, 2′-O-(2-methoxyethyl)-5-methyl-3′-O-(2-naphthalenylmethyl)-3-[(phenylmethoxy)methyl]-, 5′-(1,1,1-trifluoromethanesulfonate)

5′-O-[Bis(4-methoxyphenyl)phenylmethyl]-2′-O-(2-methoxyethyl)-5-methyl-3′-O-(2-naphthalenylmethyl)-3-[(phenylmethoxy)methyl]uridine

5′-O-[Bis(4-methoxyphenyl)phenylmethyl]-2′-O-(2-methoxyethyl)-5-methyl-3-[(phenylmethoxy)methyl]uridine

5′-Uridylic acid, 2′-O-(2-methoxyethyl)-5-methyl-, bis[2-[(2,2-dimethyl-1-oxopropyl)thio]ethyl] ester, 3′-[2-cyanoethyl N,N-bis(1-methylethyl)phosphoramidite]

1-[3-O-Benzoyl-5,6-dideoxy-6-(diethoxyphosphinyl)-2-O-(2-methoxyethyl)-β-D-ribo-hexofuranosyl]-5-methyl-2,4(1H,3H)-pyrimidinedione

2′-O-(2-Methoxyethyl)-5-methyl-3′-O-(2-naphthalenylmethyl)-3-[(phenylmethoxy)methyl]uridine

β-D-Allofuranuronic acid, 5-O-[bis(4-methoxyphenyl)phenylmethyl]-1-deoxy-1-(3,4-dihydro-5-methyl-2,4-dioxo-1(2H)-pyrimidinyl)-2-O-(2-methoxyethyl)-, methyl ester, 3-[2-cyanoethyl N,N-bis(1-methylethyl)phosphoramidite]

β-D-Allofuranuronic acid, 5-O-[bis(4-methoxyphenyl)phenylmethyl]-1-deoxy-1-(3,4-dihydro-5-methyl-2,4-dioxo-1(2H)-pyrimidinyl)-2-O-(2-methoxyethyl)-, methyl ester

β-D-Allofuranuronic acid, 5-O-[bis(4-methoxyphenyl)phenylmethyl]-1-deoxy-1-(3,4-dihydro-5-methyl-2,4-dioxo-1(2H)-pyrimidinyl)-3-O-[(1,1-dimethylethyl)dimethylsilyl]-2-O-(2-methoxyethyl)-, methyl ester

β-D-Allofuranuronic acid, 1-deoxy-1-(3,4-dihydro-5-methyl-2,4-dioxo-1(2H)-pyrimidinyl)-3-O-[(1,1-dimethylethyl)dimethylsilyl]-2-O-(2-methoxyethyl)-, methyl ester

β-D-Allofuranuronic acid, 1-deoxy-1-[3,4-dihydro-5-methyl-2,4-dioxo-3-[(phenylmethoxy)methyl]-1(2H)-pyrimidinyl]-3-O-[(1,1-dimethylethyl)dimethylsilyl]-2-O-(2-methoxyethyl)-5-O-(phenylmethyl)-, methyl ester

β-D-Allofuranuronic acid, 1-deoxy-1-[3,4-dihydro-5-methyl-2,4-dioxo-3-[(phenylmethoxy)methyl]-1(2H)-pyrimidinyl]-2-O-(2-methoxyethyl)-5-O-(phenylmethyl)-, methyl ester

β-D-Allofuranuronic acid, 1-deoxy-1-[3,4-dihydro-5-methyl-2,4-dioxo-3-[(phenylmethoxy)methyl]-1(2H)-pyrimidinyl]-2-O-(2-methoxyethyl)-3-O-(2-naphthalenylmethyl)-5-O-(phenylmethyl)-, methyl ester

1-Deoxy-1-[3,4-dihydro-5-methyl-2,4-dioxo-3-[(phenylmethoxy)methyl]-1(2H)-pyrimidinyl]-2-O-(2-methoxyethyl)-3-O-(2-naphthalenylmethyl)-5-O-(phenylmethyl)-β-D-allofuranuronic acid

1-[5-O-[Bis(4-methoxyphenyl)phenylmethyl]-3-O-[[bis(1-methylethyl)amino](2-cyanoethoxy)phosphino]-6-deoxy-2-O-(2-methoxyethyl)-6-[(2,2,2-trifluoroacetyl)amino]-β-D-allofuranosyl]-5-methyl-2,4(1H,3H)-pyrimidinedione

1-[5-O-[Bis(4-methoxyphenyl)phenylmethyl]-3-O-[[bis(1-methylethyl)amino](2-cyanoethoxy)phosphino]-6-deoxy-6-fluoro-2-O-(2-methoxyethyl)-β-D-allofuranosyl]-5-methyl-2,4(1H,3H)-pyrimidinedione