Uridine, 2′-deoxy-3′,5′-O-[1,1,3,3-tetrakis(1-methylethyl)-1,3-disiloxanediyl]-3′-C-[(1Z)-2-(tributylstannyl)ethenyl]-

Uridine, 2′-deoxy-3′,5′-O-[1,1,3,3-tetrakis(1-methylethyl)-1,3-disiloxanediyl]-3′-C-[(1E)-2-(tributylstannyl)ethenyl]-

Adenosine, 3′-C-ethynyl-3′,5′-O-[1,1,3,3-tetrakis(1-methylethyl)-1,3-disiloxanediyl]-, 2′-(O-phenyl carbonothioate)

Uridine, 3′-C-ethynyl-3′,5′-O-[1,1,3,3-tetrakis(1-methylethyl)-1,3-disiloxanediyl]-, 2′-(O-phenyl carbonothioate)

Adenosine, 3′-C-ethynyl-3′,5′-O-[1,1,3,3-tetrakis(1-methylethyl)-1,3-disiloxanediyl]-

Uridine, 3′-C-ethynyl-3′,5′-O-[1,1,3,3-tetrakis(1-methylethyl)-1,3-disiloxanediyl]-

Adenosine, 2′-deoxy-3′-C-ethynyl-, 5′-benzoate

Adenosine, 3′-C-ethynyl-, 5′-benzoate 2′-[3-(trifluoromethyl)benzoate]

Uridine, 3′-C-ethynyl-, 5′-benzoate 2′-[3-(trifluoromethyl)benzoate]

Adenosine, 3′-C-ethynyl-, 5′-benzoate

Uridine, 3′-C-ethynyl-, 5′-benzoate

Adenosine, 2′-O-[(1,1-dimethylethyl)dimethylsilyl]-3′-C-[(trimethylsilyl)ethynyl]-, 5′-benzoate

Uridine, 2′-O-[(1,1-dimethylethyl)dimethylsilyl]-3′-C-[(trimethylsilyl)ethynyl]-, 5′-benzoate

5′-Thymidylic acid, 3′-azido-3′-deoxy-, mono(2-mercaptoethyl) ester

5′-Thymidylic acid, 3′-azido-3′-deoxy-, mono[2-(acetylthio)ethyl] ester

5′-Thymidylic acid, 3′-azido-3′-deoxy-, mono[2-[(2-methyl-1-oxopropyl)thio]ethyl] ester

5′-Thymidylic acid, 3′-azido-3′-deoxy-, mono[2-[(2,2-dimethyl-1-oxopropyl)thio]ethyl] ester

Thymidine 5′-(trihydrogen diphosphate), 3′-azido-3′-deoxy-, P′,P′-diphenyl ester