7-Amino-3-[2-deoxy-3,5-bis-O-(4-methylbenzoyl)-β-D-erythro-pentofuranosyl]-3,5,6,7-tetrahydro-2H-pyrrolo[2,3-d]pyrimidin-2-one

6-[2-Deoxy-3,5-bis-O-(4-methylbenzoyl)-β-D-erythro-pentofuranosyl]-2,3,4,6-tetrahydro-1-methylpyrimido[4,5-c]pyridazin-7(1H)-one

6-[2-Deoxy-3,5-bis-O-(4-methylbenzoyl)-β-D-erythro-pentofuranosyl]-2,3,4,6-tetrahydropyrimido[4,5-c]pyridazin-7(1H)-one

Uridine, 5′-deoxy-5′-[[3-[[[(2S,3S,4S,5S)-5-[(1S)-1,2-dihydroxyethyl]-3,4-dihydroxy-2-pyrrolidinyl]carbonyl]amino]-1-oxopropyl]amino]-

Uridine, 5′-deoxy-5′-[[[[[(2S,3S,4S,5S)-5-[(1S)-1,2-dihydroxyethyl]-3,4-dihydroxy-2-pyrrolidinyl]carbonyl]amino]acetyl]amino]-

Uridine, 5′-deoxy-5′-[[3-[[[(2S,3S,4S,5R)-5-[(4S)-2,2-dimethyl-1,3-dioxolan-4-yl]-4-hydroxy-3-[(triethylsilyl)oxy]-2-pyrrolidinyl]carbonyl]amino]-1-oxopropyl]amino]-2′,3′-O-(1-methylethylidene)-

Uridine, 5′-deoxy-5′-[[3-[[(9H-fluoren-9-ylmethoxy)carbonyl]amino]-1-oxopropyl]amino]-2′,3′-O-(1-methylethylidene)-

Uridine, 5′-[(aminoacetyl)amino]-5′-deoxy-2′,3′-O-(1-methylethylidene)-

Uridine, 5′-deoxy-5′-[[[[[(2S,3S,4S,5R)-5-[(4S)-2,2-dimethyl-1,3-dioxolan-4-yl]-4-hydroxy-3-[(triethylsilyl)oxy]-2-pyrrolidinyl]carbonyl]amino]acetyl]amino]-2′,3′-O-(1-methylethylidene)-

Uridine, 5′-[(3-amino-1-oxopropyl)amino]-5′-deoxy-2′,3′-O-(1-methylethylidene)-

Uridine, 5′-deoxy-5′-[[[[(9H-fluoren-9-ylmethoxy)carbonyl]amino]acetyl]amino]-2′,3′-O-(1-methylethylidene)-

Uridine, 5′-O-[bis(4-methoxyphenyl)phenylmethyl]-2′-O-[2-[[[2-(1,3-dihydro-1,3-dioxo-2H-isoindol-2-yl)ethyl]methylamino]oxy]ethyl]-5-methyl-, 3′-(hydrogen butanedioate)

Uridine, 5′-O-[bis(4-methoxyphenyl)phenylmethyl]-2′-O-[2-[[[2-(1,3-dihydro-1,3-dioxo-2H-isoindol-2-yl)ethyl]methylamino]oxy]ethyl]-5-methyl-, 3′-[2-cyanoethyl bis(1-methylethyl)phosphoramidite]

Uridine, 5′-O-[bis(4-methoxyphenyl)phenylmethyl]-2′-O-[2-[[[2-(1,3-dihydro-1,3-dioxo-2H-isoindol-2-yl)ethyl]methylamino]oxy]ethyl]-5-methyl-

Uridine, 2′-O-[2-[[[2-(1,3-dihydro-1,3-dioxo-2H-isoindol-2-yl)ethyl]methylamino]oxy]ethyl]-5-methyl-

Uridine, 2′-O-[2-[[[2-(1,3-dihydro-1,3-dioxo-2H-isoindol-2-yl)ethyl]methylamino]oxy]ethyl]-5′-O-[(1,1-dimethylethyl)diphenylsilyl]-5-methyl-

Uridine, 5′-O-[(1,1-dimethylethyl)diphenylsilyl]-5-methyl-2′-O-[2-[(methylamino)oxy]ethyl]-