1-(3'-O-benzyl-5'-O-tert-butyldiphenylsilyl-4'-C-ethoxymethylene-β-D-ribo-pentofuranosyl)thymine

1-(2'-O-acetyl-3'-O-benzyl-5'-O-tert-butyldiphenylsilyl-4'-C-ethoxymethylene-β-D-ribo-pentofuranosyl)thymine

1-[(2R,3R,4S,5R)-4-Benzyloxy-5-(tert-butyl-diphenyl-silanyloxymethyl)-5-ethoxymethyl-3-hydroxy-tetrahydro-furan-2-yl]-5-methyl-1H-pyrimidine-2,4-dione

{3-[(2,2-dimethyl-1,1-diphenyl-1-silapropoxy)methyl]-(1S,3R,4S,5R)-7,7-dimethyl-2,6,8-trioxa-4-(phenylmethoxy)bicyclo[3.3.0]oct-3-yl}methan-1-ol

3-O-benzyl-5-O-tert-butyldiphenylsilyl-4-C-ethoxymethylene-1,2-isopropylidene-β-D-ribo-pentofuranose

Thiocarbonic acid O-[(2R,3R,4S,5R)-4-benzyloxy-5-(tert-butyl-diphenyl-silanyloxymethyl)-5-ethoxymethyl-2-(5-methyl-2,4-dioxo-3,4-dihydro-2H-pyrimidin-1-yl)-tetrahydro-furan-3-yl] ester O-phenyl ester