4-N-acetyl-1-[2',5'-bis-O-(tert-butyldimethylsilyl)-β-D-erythro-pentofuranos-3'-ulosyl]cytosine

N-[1-[(6R,8R,9R)-4-amino-9-[tert-butyl(dimethyl)silyl]oxy-6-[[tert-butyl(dimethyl)silyl]oxymethyl]-2,2-dioxo-1,7-dioxa-2λ6-thiaspiro[4.4]non-3-en-8-yl]-2-oxopyrimidin-4-yl]acetamide

(2S,3R,4R,5R)-5-(4-amino-2-oxopyrimidin-1-yl)-4-[tert-butyl(dimethyl)silyl]oxy-2-[[tert-butyl(dimethyl)silyl]oxymethyl]oxolane-3-carbonitrile

N-[1-[(2R,3R,4S,5S)-3-[tert-butyl(dimethyl)silyl]oxy-5-[[tert-butyl(dimethyl)silyl]oxymethyl]-4-cyanooxolan-2-yl]-2-oxopyrimidin-4-yl]acetamide

(2S,3S,4R,5R)-5-(4-amino-2-oxopyrimidin-1-yl)-4-hydroxy-2-(hydroxymethyl)oxolane-3-carbonitrile

4-N-acetyl-3'-C-cyano-3'-deoxycytidine