1-[(5R,6R,7R,9R)-4-氨基-6-(叔丁基-二甲基硅烷基)氧基-9-[(叔丁基-二甲基硅烷基)氧基甲基]-2,2-二氧代-1,8-二氧杂-2-硫杂螺[4.4]壬-3-烯-7-基]-5-甲基嘧啶-2,4-二酮

[(2R,3R,4R,5R)-4-[tert-butyl(dimethyl)silyl]oxy-2-[[tert-butyl(dimethyl)silyl]oxymethyl]-3-cyano-5-(5-methyl-2,4-dioxopyrimidin-1-yl)oxolan-3-yl] methanesulfonate

1-<2',5'-bis-O-(tert-butyldimethylsilyl)-3'-C-cyano-3'-O-mesyl-β-D-xylofuranosyl>thymine

1-[(6R,8R,9R)-4-amino-9-[tert-butyl(dimethyl)silyl]oxy-6-(hydroxymethyl)-2,2-dioxo-1,7-dioxa-2λ⁶-thiaspiro[4.4]non-3-en-8-yl]-5-methylpyrimidine-2,4-dione

1-[(6R,8R)-4-amino-6-[[tert-butyl(dimethyl)silyl]oxymethyl]-2,2-dioxo-1,7-dioxa-2λ⁶-thiaspiro[4.4]non-3-en-8-yl]-5-methylpyrimidine-2,4-dione