5H-5,8-Epoxy-1,4-etheno-13,16-methano-16H-pyrimido[1,6-h][1,3,6,8,11,13,2]trioxatriazaphosphacyclooctadecine-3,18,20(19H)-trione, 21-amino-6,7,8,9,13,14,21,21a-octahydro-7,11-dihydroxy-14-(hydroxymethyl)-21,25-dimethyl-, 11-oxide, (21R,21aR)-rel-

Adenosine, 2′-deoxy-N-[(2,2,2-trichloro-1,1-dimethylethoxy)carbonyl]-

Cytidine, N-[(2,2,2-trichloro-1,1-dimethylethoxy)carbonyl]-, 2′,3′,5′-tris(2,2,2-trichloro-1,1-dimethylethyl carbonate)

Adenosine, N-benzoyl-2′-(butyldithio)-2′-deoxy-3′,5′-O-[1,1,3,3-tetrakis(1-methylethyl)-1,3-disiloxanediyl]-

4-(6-Amino-9-β-D-ribofuranosyl-9H-purin-8-yl)-L-phenylalanine

Guanosine, 5′-O-[(4-methoxyphenyl)diphenylmethyl]-P-(1-methyl-2-oxopropyl)thymidylyl-(3′→5′)-2′-deoxy-N-(2-methyl-1-oxopropyl)-

9,12-Epoxy-1,4-methano-1H,6H,8H-2,5,7-trioxa-12a,14,17,18a-tetraaza-6-phosphacyclohexadeca[def]biphenylene-13,16,18(17H)-trione, 15-amino-3,4,9,10,11,12,15a,15b,18b,18c-decahydro-6,10-dihydroxy-3-(hydroxymethyl)-15a,15b-dimethyl-, 6-oxide, (15aR,15bS,18bS,18cR)-rel-

L-Phenylalanine, N-[6-[[5-[(3aS,4S,6aR)-1-[bis(4-methoxyphenyl)phenylmethyl]hexahydro-2-oxo-1H-thieno[3,4-d]imidazol-4-yl]-1-oxopentyl]amino]-1-oxohexyl]-, 3′-ester with 2′-O-[bis(2-methoxyethoxy)methyl]-N-[bis(4-methoxyphenyl)phenylmethyl]adenosine

2′-O-[Bis[2-(acetyloxy)ethoxy]methyl]-N-[bis(4-methoxyphenyl)phenylmethyl]cytidine