Cytidine, N-acetyl-5′-O-[bis(4-methoxyphenyl)phenylmethyl]-2′-O-methyl-3′-O-[(1S,3S,3aS)-tetrahydro-3-[(methyldiphenylsilyl)methyl]-1H,3H-pyrrolo[1,2-c][1,3,2]oxazaphosphol-1-yl]-

Guanosine, 5′-O-[bis(4-methoxyphenyl)phenylmethyl]-6-O-(2-cyanoethyl)-2′-deoxy-N-(2-methyl-1-oxopropyl)-3′-O-[(1S,3S,3aS)-tetrahydro-3-(methyldiphenylsilyl)-1H,3H-pyrrolo[1,2-c][1,3,2]oxazaphosphol-1-yl]-

2-Methyl-N-[6-[2-(4-nitrophenyl)ethoxy]-9-[3,5-O-[1,1,3,3-tetrakis(1-methylethyl)-1,3-disiloxanediyl]-2-O-[(1,1,1-trifluoromethyl)sulfonyl]-β-D-arabinofuranosyl]-9H-purin-2-yl]propanamide

2-Methyl-N-[6-[2-(4-nitrophenyl)ethoxy]-9-[3,5-O-[1,1,3,3-tetrakis(1-methylethyl)-1,3-disiloxanediyl]-β-D-erythro-pentofuranos-2-ulosyl]-9H-purin-2-yl]propanamide

Guanosine, 3′-deoxy-3′-(2-hydroxyethyl)-N-(2-methyl-1-oxopropyl)-, 2′-acetate 5′-benzoate