1-[5-O-(tert-butyldimethylsilyl)-2,3-dideoxy-2-fluoro-β-D-glycero-pent-2-enofuranosyl]-N4-benzoylcytosine

1-[5-O-(tert-butyldimethylsilyl)-2,3-dideoxy-2-fluoro-α-D-glycero-pent-2-enofuranosyl]-N4-benzoylcytosine

N-(2-oxo-1-((2S,4S,5R,6S,7R)-4,5,6-tris(benzyloxy)-7-((benzyloxy)methyl)oxepan-2-yl)-1,2-dihydropyrimidin-4-yl)benzamide

diethyl (4R)-[3-O-acetyl-2-O-benzoyl-1-(4-N-benzoylcytosin-1-yl)-1-deoxy-α-D-threofuranos-4-yl]phosphonate

N-[1-((2R,4R,5S)-3,3-Difluoro-4-hydroxy-5-hydroxymethyl-tetrahydro-thiophen-2-yl)-2-oxo-1,2-dihydro-pyrimidin-4-yl]-benzamide