3',5'-di-O-(4-chlorobenzyl)-2'-deoxy-2'-α-methyluridine

3',5'-di-O-(4-chlorobenzyl)-2'-deoxy-2'-α-iodomethyluridine

4-Amino-1-[(2R,3R,4S,5R)-4-(tert-butyl-dimethyl-silanyloxy)-5-(tert-butyl-dimethyl-silanyloxymethyl)-3-methyl-tetrahydro-furan-2-yl]-1H-pyrimidin-2-one

3',5'-di-O-(tert-butyldimethylsilyl)-2'-deoxy-2'-α-methyluridine

3',5'-di-O-(tert-butyldimethylsilyl)-2'-deoxy-2'-α-methyl-N4-benzoylcytidine