Uridine, 2′-O-[1-[(4-hydroxyphenyl)methoxy]ethyl]-

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

Uridine, 2′-O-[1-[[2-chloro-4-[[[2-(4-nitrophenyl)ethoxy]carbonyl]oxy]phenyl]methoxy]ethyl]-

Uridine, 2′-O-[1-[(2,4-dinitrophenyl)methoxy]ethyl]-

Uridine, 2′-O-[1-[(2-nitrophenyl)methoxy]ethyl]-

Uridine, 2′-O-[1-[(4-nitrophenyl)methoxy]ethyl]-

Uridine, 2′-O-[1-[[4-(ethoxycarbonyl)phenyl]methoxy]ethyl]-

Uridine, 2′-O-[1-[(3,5-dichlorophenyl)methoxy]ethyl]-

Uridine, 2′-O-[1-[(2,6-dichlorophenyl)methoxy]ethyl]-

Uridine, 2′-O-[1-[(3,4-dimethoxyphenyl)methoxy]ethyl]-

Uridine, 2′-O-[1-[(4-methoxyphenyl)methoxy]ethyl]-

Uridine, 2′-O-[1-(phenylmethoxy)ethyl]-

Uridine, 2′-O-[1-(2-chlorophenoxy)ethyl]-

Uridine, 2′-O-[1-(4-methoxyphenoxy)ethyl]-

Uridine, 2′-O-(1-phenoxyethyl)-

Uridine, 2′-O-[1-[2-(1,3-dihydro-1,3-dioxo-2H-isoindol-2-yl)ethoxy]ethyl]-3′,5′-O-[1,1,3,3-tetrakis(1-methylethyl)-1,3-disiloxanediyl]-

Uridine, 2′-O-[1-[2-(phenylsulfonyl)ethoxy]ethyl]-3′,5′-O-[1,1,3,3-tetrakis(1-methylethyl)-1,3-disiloxanediyl]-

Uridine, 2′-O-[1-[2-(phenylthio)ethoxy]ethyl]-3′,5′-O-[1,1,3,3-tetrakis(1-methylethyl)-1,3-disiloxanediyl]-

Uridine, 2′-O-[1-[2-(methylsulfonyl)ethoxy]ethyl]-3′,5′-O-[1,1,3,3-tetrakis(1-methylethyl)-1,3-disiloxanediyl]-

Uridine, 2′-O-[1-(2-nitroethoxy)ethyl]-3′,5′-O-[1,1,3,3-tetrakis(1-methylethyl)-1,3-disiloxanediyl]-