((2R,3S,5R)-3-hydroxy-5-(5-methyl-2,4-dioxo-3,4-dihydropyrimidin-1(2H)-yl)tetrahydrofuran-2-yl)methyl (2-(trimethylsilyl)ethyl) carbonate

5'-O-(1,3-benzodithiol-2-yl)thymidine

allyl ((2R,3S,5R)-2-(hydroxymethyl)-5-(5-methyl-2,4-dioxo-3,4-dihydropyrimidin-1(2H)-yl)tetrahydrofuran-3-yl) carbonate

3'-O-tert-butyldimethylsilyl-5'-O-triethylsilylthymidine

N3-trimethylsilylethoxymethyl-3'-O-tert-butyldimethylsilyl-5'-O-triethylsilylthymidine