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

(3-溴-4-吡啶基)乙腈

3-氨基-1-苄基-3-氰基吡咯烷

sodium cyanotriphenylborate