2'-deoxy-5'-O-dimethoxytrityl-4'-C-methyluridine

3-O-benzyl-5-O-tert-butyldiphenylsilyl-4-C-methyl-1,2-O-isopropylidene-α-D-ribofuranose

2′-deoxy-4′-propyluridine

1,2-di-O-acetyl-3-O-benzyl-5-O-tert-butyldiphenylsilyl-4-C-methyl-α,β-D-ribofuranose

3'-O-benzyl-5'-O-tert-butyldiphenylsilyl-2'-deoxy-4'-C-methyluridine