1-[5-(tert-butyldiphenylsilyl)-2,3-dideoxy-3-C-(formyl)-β-D-erythro-pentofuranosyl]thymine

[(2S,3S,5R)-2-(tert-Butyl-diphenyl-silanyloxymethyl)-5-(5-methyl-2,4-dioxo-3,4-dihydro-2H-pyrimidin-1-yl)-tetrahydro-furan-3-ylmethyl]-(1,1-diethoxy-ethyl)-phosphinic acid ethyl ester

5'-O-(tert-butydiphenylsilyl)-3'-deoxy-3'-C-(iodomethyl)thymidine