Methanesulfonic acid 2-[2-amino-9-[3,5-O-[[2-[[2-(cyclopropylmethoxy)-2-methyl-1-oxopropyl]thio]ethoxy]phosphinylidene]-2-C-methyl-β-D-ribofuranosyl]-9H-purin-6-yl]-2-methylhydrazide

7-[3,5-O-[[2-[[2-(Cyclohexyloxy)-2-methyl-1-oxopropyl]thio]ethoxy]phosphinylidene]-2-C-methyl-β-D-ribofuranosyl]-7H-pyrrolo[2,3-d]pyrimidin-4-amine

Cytidine, 2′-C-methyl-, cyclic 3′,5′-[2-[[2-(cyclohexyloxy)-2-methyl-1-oxopropyl]thio]ethyl phosphate]

Uridine, 2′-C-methyl-, cyclic 3′,5′-[2-[[2-(cyclohexyloxy)-2-methyl-1-oxopropyl]thio]ethyl phosphate]

Inosine, 2′-C-methyl-, cyclic 3′,5′-[2-[[2-(cyclohexyloxy)-2-methyl-1-oxopropyl]thio]ethyl phosphate]

Adenosine, 2′-C-methyl-, cyclic 3′,5′-[2-[[2-(cyclohexyloxy)-2-methyl-1-oxopropyl]thio]ethyl phosphate]

Inosine, 2′-C-methyl-, 2-(methylsulfonyl)hydrazone, cyclic 3′,5′-[2-[[2-(cyclohexyloxy)-2-methyl-1-oxopropyl]thio]ethyl phosphate]

Methanesulfonic acid 2-[9-[3,5-O-[[2-[[2-(cyclohexyloxy)-2-methyl-1-oxopropyl]thio]ethoxy]phosphinylidene]-2-C-methyl-β-D-ribofuranosyl]-9H-purin-6-yl]-2-methylhydrazide

9-[3,5-O-[[2-[[2-(Cyclohexyloxy)-2-methyl-1-oxopropyl]thio]ethoxy]phosphinylidene]-2-C-methyl-β-D-ribofuranosyl]-9H-purin-2-amine

Guanosine, 2′-C-methyl-, cyclic 3′,5′-[2-[[2-(cyclohexyloxy)-2-methyl-1-oxopropyl]thio]ethyl phosphate]

Adenosine, 2-amino-2′-C-methyl-, cyclic 3′,5′-[2-[[2-(cyclohexyloxy)-2-methyl-1-oxopropyl]thio]ethyl phosphate]

Guanosine, 2′-C-methyl-, 2-(methylsulfonyl)hydrazone, cyclic 3′,5′-[2-[[2-(cyclohexyloxy)-2-methyl-1-oxopropyl]thio]ethyl phosphate]

Methanesulfonic acid 2-[2-amino-9-[3,5-O-[[2-[[2-(cyclohexyloxy)-2-methyl-1-oxopropyl]thio]ethoxy]phosphinylidene]-2-C-methyl-β-D-ribofuranosyl]-9H-purin-6-yl]-2-methylhydrazide

7-[3,5-O-[[2-[[2-(Cyclopentyloxy)-2-methyl-1-oxopropyl]thio]ethoxy]phosphinylidene]-2-C-methyl-β-D-ribofuranosyl]-7H-pyrrolo[2,3-d]pyrimidin-4-amine

Cytidine, 2′-C-methyl-, cyclic 3′,5′-[2-[[2-(cyclopentyloxy)-2-methyl-1-oxopropyl]thio]ethyl phosphate]

Uridine, 2′-C-methyl-, cyclic 3′,5′-[2-[[2-(cyclopentyloxy)-2-methyl-1-oxopropyl]thio]ethyl phosphate]

Inosine, 2′-C-methyl-, cyclic 3′,5′-[2-[[2-(cyclopentyloxy)-2-methyl-1-oxopropyl]thio]ethyl phosphate]

Adenosine, 2′-C-methyl-, cyclic 3′,5′-[2-[[2-(cyclopentyloxy)-2-methyl-1-oxopropyl]thio]ethyl phosphate]

Inosine, 2′-C-methyl-, 2-(methylsulfonyl)hydrazone, cyclic 3′,5′-[2-[[2-(cyclopentyloxy)-2-methyl-1-oxopropyl]thio]ethyl phosphate]

Methanesulfonic acid 2-[9-[3,5-O-[[2-[[2-(cyclopentyloxy)-2-methyl-1-oxopropyl]thio]ethoxy]phosphinylidene]-2-C-methyl-β-D-ribofuranosyl]-9H-purin-6-yl]-2-methylhydrazide