2-Chloro-9-[2-deoxy-2-fluoro-5-O-[(R)-[2-(3-hydroxy-2,2-dimethyl-1-thioxopropoxy)ethoxy][(phenylmethyl)amino]phosphinyl]-β-D-arabinofuranosyl]-9H-purin-6-amine

2-Chloro-9-[2-deoxy-2-fluoro-5-O-[(S)-[2-(3-hydroxy-2,2-dimethyl-1-thioxopropoxy)ethoxy][(phenylmethyl)amino]phosphinyl]-β-D-arabinofuranosyl]-9H-purin-6-amine

4-Amino-1-[3,5-O-[(1-methylethoxy)phosphinylidene]-β-D-arabinofuranosyl]-2(1H)-pyrimidinone

L-Alanine, N-phosphono-, 1-ethyl ester, cyclic (P→3′,5′)-ester with 2-chloro-9-(2-deoxy-2-fluoro-β-D-arabinofuranosyl)-9H-purin-6-amine

L-Alanine, N-phosphono-, 1-ethyl ester, cyclic (P→3′,5′)-ester with 4-amino-1-β-D-arabinofuranosyl-2(1H)-pyrimidinone

L-Alanine, N-[[1-[(ethoxycarbonyl)oxy]ethoxy]hydroxyphosphinyl]-, 1-methylethyl ester, 5′-ester with 4-amino-1-β-D-arabinofuranosyl-2(1H)-pyrimidinone

2-Chloro-9-[2-deoxy-2-fluoro-3,5-O-[(1-methylethoxy)phosphinylidene]-β-D-arabinofuranosyl]-9H-purin-6-amine

4-Amino-1-[5-O-[bis[2-[(3-hydroxy-2,2-dimethyl-1-oxopropyl)thio]ethoxy]phosphinyl]-β-D-arabinofuranosyl]-2(1H)-pyrimidinone

L-Leucine, N-[hydroxy(2-methoxy-2-oxoethoxy)phosphinyl]-, methyl ester, 5′-ester with 2-chloro-9-(2-deoxy-2-fluoro-β-D-arabinofuranosyl)-9H-purin-6-amine

L-Leucine, N-[(2-ethoxy-2-oxoethoxy)hydroxyphosphinyl]-, ethyl ester, 5′-ester with 4-amino-1-β-D-arabinofuranosyl-2(1H)-pyrimidinone

L-Leucine, N,N′-phosphinicobis-, 1,1′-dimethyl ester, 5′-ester with 4-amino-1-β-D-arabinofuranosyl-2(1H)-pyrimidinone

L-Leucine, N-(R)-phosphono-, 1-ethyl ester, cyclic (P→3′,5′)-ester with 9-β-D-arabinofuranosyl-2-methyl-9H-purin-6-amine

L-Leucine, N-(S)-phosphono-, 1-ethyl ester, cyclic (P→3′,5′)-ester with 9-β-D-arabinofuranosyl-2-methyl-9H-purin-6-amine

L-Alanine, N-(hydroxyphenoxyphosphinyl)-, 1-methylethyl ester, 5′-ester with 9-β-D-arabinofuranosyl-2-methyl-9H-purin-6-amine

2-Chloro-9-[2-deoxy-2-fluoro-5-O-[[2-[(3-hydroxy-2,2-dimethyl-1-oxopropyl)thio]ethoxy][2-[(2-hydroxy-2-methyl-1-oxopropyl)thio]ethoxy]phosphinyl]-β-D-arabinofuranosyl]-9H-purin-6-amine

L-Leucine, N-[(R)-hydroxy(2-methoxy-2-oxoethoxy)phosphinyl]-, methyl ester, 5′-ester with 4-amino-1-β-D-arabinofuranosyl-2(1H)-pyrimidinone

L-Leucine, N-[(S)-hydroxy(2-methoxy-2-oxoethoxy)phosphinyl]-, methyl ester, 5′-ester with 4-amino-1-β-D-arabinofuranosyl-2(1H)-pyrimidinone

L-Leucine, N,N′-phosphinicobis-, 1,1′-dimethyl ester, 5′-ester with 2-chloro-9-(2-deoxy-2-fluoro-β-D-arabinofuranosyl)-9H-purin-6-amine

L-Leucine, N-[(2-ethoxy-2-oxoethoxy)hydroxyphosphinyl]-, ethyl ester, 5′-ester with 9-β-D-arabinofuranosyl-2-fluoro-9H-purin-6-amine

9-[5-O-[Hydroxy[(phenylmethyl)amino]phosphinyl]-β-D-arabinofuranosyl]-6-methoxy-9H-purin-2-amine