Uridine, N-benzoyl-5′-O-[bis(4-methoxyphenyl)phenylmethyl]-3′-de(phosphinicooxy)-5-methyl-2′-O-methylcytidylylmethylene(methylimino)-(3′→5′)-3′-O-[(1,1-dimethylethyl)diphenylsilyl]-5-methyl-2′-O-methyl-

Guanosine, N-benzoyl-5′-O-[bis(4-methoxyphenyl)phenylmethyl]-3′-de(phosphinicooxy)-5-methyl-2′-O-methylcytidylylmethylene(methylimino)-(3′→5′)-3′-O-[(1,1-dimethylethyl)diphenylsilyl]-2′-O-methyl-N-(2-methyl-1-oxopropyl)-

Cytidine, N-benzoyl-5′-O-[bis(4-methoxyphenyl)phenylmethyl]-3′-de(phosphinicooxy)-5-methyl-2′-O-methylcytidylylmethylene(methylimino)-(3′→5′)-N-benzoyl-3′-O-[(1,1-dimethylethyl)diphenylsilyl]-5-methyl-2′-O-methyl-

Adenosine, N-benzoyl-5′-O-[bis(4-methoxyphenyl)phenylmethyl]-3′-de(phosphinicooxy)-5-methyl-2′-O-methylcytidylylmethylene(methylimino)-(3′→5′)-N-benzoyl-3′-O-[(1,1-dimethylethyl)diphenylsilyl]-2′-O-methyl-

Uridine, N-benzoyl-5′-O-[bis(4-methoxyphenyl)phenylmethyl]-3′-de(phosphinicooxy)-2′-O-methyladenylylmethylene(methylimino)-(3′→5′)-3′-O-[(1,1-dimethylethyl)diphenylsilyl]-5-methyl-2′-O-methyl-

Guanosine, N-benzoyl-5′-O-[bis(4-methoxyphenyl)phenylmethyl]-3′-de(phosphinicooxy)-2′-O-methyladenylylmethylene(methylimino)-(3′→5′)-3′-O-[(1,1-dimethylethyl)diphenylsilyl]-2′-O-methyl-N-(2-methyl-1-oxopropyl)-

Cytidine, N-benzoyl-5′-O-[bis(4-methoxyphenyl)phenylmethyl]-3′-de(phosphinicooxy)-2′-O-methyladenylylmethylene(methylimino)-(3′→5′)-N-benzoyl-3′-O-[(1,1-dimethylethyl)diphenylsilyl]-5-methyl-2′-O-methyl-

Adenosine, N-benzoyl-5′-O-[bis(4-methoxyphenyl)phenylmethyl]-3′-de(phosphinicooxy)-2′-O-methyladenylylmethylene(methylimino)-(3′→5′)-N-benzoyl-3′-O-[(1,1-dimethylethyl)diphenylsilyl]-2′-O-methyl-

Uridine, 3′-O-[(1,1-dimethylethyl)diphenylsilyl]-5-methyl-2′-O-methyl-5′-O-(methylamino)-

Guanosine, 3′-O-[(1,1-dimethylethyl)diphenylsilyl]-2′-O-methyl-5′-O-(methylamino)-N-(2-methyl-1-oxopropyl)-

Cytidine, N-benzoyl-3′-O-[(1,1-dimethylethyl)diphenylsilyl]-5-methyl-2′-O-methyl-5′-O-(methylamino)-

Adenosine, N-benzoyl-3′-O-[(1,1-dimethylethyl)diphenylsilyl]-2′-O-methyl-5′-O-(methylamino)-

Uridine, 5′-O-[bis(4-methoxyphenyl)phenylmethyl]-3′-deoxy-3′-formyl-5-methyl-2′-O-methyl-

Guanosine, 5′-O-[bis(4-methoxyphenyl)phenylmethyl]-3′-deoxy-3′-formyl-2′-O-methyl-N-(2-methyl-1-oxopropyl)-

Cytidine, N-benzoyl-5′-O-[bis(4-methoxyphenyl)phenylmethyl]-3′-deoxy-3′-formyl-5-methyl-2′-O-methyl-

Adenosine, N-benzoyl-5′-O-[bis(4-methoxyphenyl)phenylmethyl]-3′-deoxy-3′-formyl-2′-O-methyl-

(3aR,4S,6R,6aR)-3′-Acetyldihydro-2,2-dimethyl-6-[(nitrooxy)methyl]spiro[furo[3,4-d]-1,3-dioxole-4(3aH),4′-imidazolidine]-2′,5′-dione

(5S,7R,8S,9R)-1-Acetyl-8,9-dihydroxy-7-[(nitrooxy)methyl]-6-oxa-1,3-diazaspiro[4.4]nonane-2,4-dione

[(5S,7R,8R,9R)-1-Acetyl-8,9-bis(acetyloxy)-2,4-dioxo-6-oxa-1,3-diazaspiro[4.4]non-7-yl]methyl 1,1,1-trifluoromethanesulfonate

(5S,7S,8S,9R)-1-Acetyl-8,9-bis(acetyloxy)-7-(iodomethyl)-6-oxa-1,3-diazaspiro[4.4]nonane-2,4-dione