5′-O-[Bis(4-methoxyphenyl)phenylmethyl]-3′-O-[(1,1-dimethylethyl)dimethylsilyl]-5-methyl-4′-C-[[(1R)-1-methyl-2-propyn-1-yl]oxy]uridine

(5R)-1,2-Anhydro-5-C-(3,4-dihydro-5-methyl-2,4-dioxo-1(2H)-pyrimidinyl)-3-O-[(1,1-dimethylethyl)dimethylsilyl]-α-L-erythro-2-pentulofuranose

3′-O-[(1,1-Dimethylethyl)dimethylsilyl]-5-methyl-4′-C-[[(1R)-1-methyl-2-propyn-1-yl]oxy]uridine

(1R,5R,6R,8S)-1-[[Bis(4-methoxyphenyl)phenylmethoxy]methyl]-6-(3,4-dihydro-5-methyl-2,4-dioxo-1(2H)-pyrimidinyl)-2,7-dioxabicyclo[3.2.1]oct-8-yl 2-cyanoethyl N,N-bis(1-methylethyl)phosphoramidite

1-[(1R,5R,6R,8S)-1-[[Bis(4-methoxyphenyl)phenylmethoxy]methyl]-8-hydroxy-2,7-dioxabicyclo[3.2.1]oct-6-yl]-5-methyl-2,4(1H,3H)-pyrimidinedione

1-[(1R,5R,6R,8S)-1-[[Bis(4-methoxyphenyl)phenylmethoxy]methyl]-4-hydrazinylidene-8-hydroxy-2,7-dioxabicyclo[3.2.1]oct-6-yl]-5-methyl-2,4(1H,3H)-pyrimidinedione

1-[(1R,5R,6R,8S)-1-[[Bis(4-methoxyphenyl)phenylmethoxy]methyl]-8-hydroxy-4-iodo-2,7-dioxabicyclo[3.2.1]oct-3-en-6-yl]-5-methyl-2,4(1H,3H)-pyrimidinedione

1-[(1R,5S,6R,8S)-1-[[Bis(4-methoxyphenyl)phenylmethoxy]methyl]-4,8-dihydroxy-4-(hydroxymethyl)-2,7-dioxabicyclo[3.2.1]oct-6-yl]-5-methyl-2,4(1H,3H)-pyrimidinedione

1-[(1R,5S,6R,8S)-1-[[Bis(4-methoxyphenyl)phenylmethoxy]methyl]-8-hydroxyspiro[2,7-dioxabicyclo[3.2.1]octane-4,2′-oxiran]-6-yl]-5-methyl-2,4(1H,3H)-pyrimidinedione

1-[(1R,5R,6R,8S)-1-[[Bis(4-methoxyphenyl)phenylmethoxy]methyl]-8-hydroxy-4-oxo-2,7-dioxabicyclo[3.2.1]oct-6-yl]-5-methyl-2,4(1H,3H)-pyrimidinedione

(1R,4S,5R,6R,8S)-1-[[Bis(4-methoxyphenyl)phenylmethoxy]methyl]-6-(3,4-dihydro-5-methyl-2,4-dioxo-1(2H)-pyrimidinyl)-4-methyl-2,7-dioxabicyclo[3.2.1]oct-8-yl 2-cyanoethyl N,N-bis(1-methylethyl)phosphoramidite

1-[(1R,4S,5R,6R,8S)-1-[[Bis(4-methoxyphenyl)phenylmethoxy]methyl]-8-hydroxy-4-methyl-2,7-dioxabicyclo[3.2.1]oct-6-yl]-5-methyl-2,4(1H,3H)-pyrimidinedione

1-[(1R,4S,5R,6R,8S)-1-[[Bis(4-methoxyphenyl)phenylmethoxy]methyl]-8-[[(1,1-dimethylethyl)dimethylsilyl]oxy]-4-methyl-2,7-dioxabicyclo[3.2.1]oct-6-yl]-5-methyl-2,4(1H,3H)-pyrimidinedione

Uridine, 5′-O-[bis(4-methoxyphenyl)phenylmethyl]-3′-O-[(1,1-dimethylethyl)dimethylsilyl]-5-methyl-4′-C-(2-propen-1-yloxy)-, 2′-(1H-imidazole-1-carbothioate)

5′-O-[Bis(4-methoxyphenyl)phenylmethyl]-3′-O-[(1,1-dimethylethyl)dimethylsilyl]-5-methyl-4′-C-(2-propen-1-yloxy)uridine

(1R,4R,5R,6R,8S)-1-[[Bis(4-methoxyphenyl)phenylmethoxy]methyl]-6-(3,4-dihydro-5-methyl-2,4-dioxo-1(2H)-pyrimidinyl)-4-methyl-2,7-dioxabicyclo[3.2.1]oct-8-yl 2-cyanoethyl N,N-bis(1-methylethyl)phosphoramidite

1-[(1R,4R,5R,6R,8S)-1-[[Bis(4-methoxyphenyl)phenylmethoxy]methyl]-8-hydroxy-4-methyl-2,7-dioxabicyclo[3.2.1]oct-6-yl]-5-methyl-2,4(1H,3H)-pyrimidinedione

1-[(1R,4R,5R,6R,8S)-1-[[Bis(4-methoxyphenyl)phenylmethoxy]methyl]-8-[[(1,1-dimethylethyl)dimethylsilyl]oxy]-4-methyl-2,7-dioxabicyclo[3.2.1]oct-6-yl]-5-methyl-2,4(1H,3H)-pyrimidinedione

(1R,5R,6R,8S)-1-[[Bis(4-methoxyphenyl)phenylmethoxy]methyl]-6-(3,4-dihydro-5-methyl-2,4-dioxo-1(2H)-pyrimidinyl)-4-methylene-2,7-dioxabicyclo[3.2.1]oct-8-yl 2-cyanoethyl N,N-bis(1-methylethyl)phosphoramidite

1-[(1R,5R,6R,8S)-1-[[Bis(4-methoxyphenyl)phenylmethoxy]methyl]-8-[[(1,1-dimethylethyl)dimethylsilyl]oxy]-4-methylene-2,7-dioxabicyclo[3.2.1]oct-6-yl]-5-methyl-2,4(1H,3H)-pyrimidinedione