C-(4-Hydroxybutyl) N-[3-[1-[2-deoxy-5-O-[hydroxy[[hydroxy(phosphonooxy)phosphinyl]oxy]phosphinyl]-β-D-erythro-pentofuranosyl]-1,2,3,4-tetrahydro-2,4-dioxo-5-pyrimidinyl]-2-propyn-1-yl]carbamate

2′-Deoxy-5-[3-[(1-oxo-2-propen-1-yl)amino]-1-propyn-1-yl]uridine 5′-(tetrahydrogen triphosphate)

Xanthylium, 9-[5-[[[2-[[3-[[3-[1-[3-O-(azidomethyl)-2-deoxy-5-O-[hydroxy[[hydroxy(phosphonooxy)phosphinyl]oxy]phosphinyl]-β-D-erythro-pentofuranosyl]-1,2,3,4-tetrahydro-2,4-dioxo-5-pyrimidinyl]-2-propyn-1-yl]amino]-3-oxopropyl]dithio]ethyl]amino]carbonyl]-2-carboxyphenyl]-3,6-bis(ethylamino)-2,7-dim..

1H,5H,11H,15H-Xantheno[2,3,4-ij:5,6,7-i‘j′]diquinolizin-18-ium, 9-[5-[19-[2-amino-7-[3-O-(azidomethyl)-2-deoxy-5-O-[hydroxy[[hydroxy(phosphonooxy)phosphinyl]oxy]phosphinyl]-β-D-erythro-pentofuranosyl]-4,7-dihydro-4-oxo-3H-pyrrolo[2,3-d]pyrimidin-5-yl]-1,15-dioxo-8-oxa-5,6-dithia-2,14,16-triazanonade..

N-[3-[2-Amino-7-[3-O-(azidomethyl)-2-deoxy-5-O-[hydroxy[[hydroxy(phosphonooxy)phosphinyl]oxy]phosphinyl]-β-D-erythro-pentofuranosyl]-4,7-dihydro-4-oxo-3H-pyrrolo[2,3-d]pyrimidin-5-yl]-2-propyn-1-yl]-N′-[5-[[(2-aminoethyl)dithio]methoxy]pentyl]urea

N-[3-[2-Amino-7-[3-O-(azidomethyl)-2-deoxy-5-O-[hydroxy[[hydroxy(phosphonooxy)phosphinyl]oxy]phosphinyl]-β-D-erythro-pentofuranosyl]-4,7-dihydro-4-oxo-3H-pyrrolo[2,3-d]pyrimidin-5-yl]-2-propyn-1-yl]-16,16,16-trifluoro-15-oxo-8-oxa-10,11-dithia-2,14-diazahexadecanamide

1H,5H,11H,15H-Xantheno[2,3,4-ij:5,6,7-i‘j′]diquinolizin-18-ium, 9-[5-[31-[4-amino-7-[3-O-(azidomethyl)-2-deoxy-5-O-[hydroxy[[hydroxy(phosphonooxy)phosphinyl]oxy]phosphinyl]-β-D-erythro-pentofuranosyl]-7H-pyrrolo[2,3-d]pyrimidin-5-yl]-16,16-dimethyl-1,12,27-trioxo-5,8,13,20-tetraoxa-17,18-dithia-2,11..

Xanthylium, 9-[5-[30-[1-[3-O-(azidomethyl)-2-deoxy-5-O-[hydroxy[[hydroxy(phosphonooxy)phosphinyl]oxy]phosphinyl]-β-D-erythro-pentofuranosyl]-1,2,3,4-tetrahydro-2,4-dioxo-5-pyrimidinyl]-16,16-dimethyl-1,12,26-trioxo-5,8,13,20,25-pentaoxa-17,18-dithia-2,11,27-triazatriacont-29-yn-1-yl]-2-carboxyphenyl..

C-(22-Amino-9,9-dimethyl-13-oxo-5,12,17,20-tetraoxa-7,8-dithia-14-azadocoa-1-yl) N-[3-[1-[3-O-(azidomethyl)-2-deoxy-5-O-[hydroxy[[hydroxy(phosphonooxy)phosphinyl]oxy]phosphinyl]-β-D-erythro-pentofuranosyl]-1,2,3,4-tetrahydro-2,4-dioxo-5-pyrimidinyl]-2-propyn-1-yl]carbamate

1H,5H,11H,15H-Xantheno[2,3,4-ij:5,6,7-i‘j′]diquinolizin-18-ium, 9-[2-carboxy-5-[31-[1-[2-deoxy-3-O-[(ethyldithio)methyl]-5-O-[hydroxy[[hydroxy(phosphonooxy)phosphinyl]oxy]phosphinyl]-β-D-erythro-pentofuranosyl]-1,2,3,4-tetrahydro-2,4-dioxo-5-pyrimidinyl]-15,15-dimethyl-1,12,27-trioxo-5,8,19,26-tetra..

1H,5H,11H,15H-Xantheno[2,3,4-ij:5,6,7-i‘j′]diquinolizin-18-ium, 9-[2-carboxy-5-[[[[1-[14-[4-[[[4-[[[[3-[1-[2-deoxy-3-O-[(ethyldithio)methyl]-5-O-[hydroxy[[hydroxy(phosphonooxy)phosphinyl]oxy]phosphinyl]-β-D-erythro-pentofuranosyl]-1,2,3,4-tetrahydro-2,4-dioxo-5-pyrimidinyl]-2-propyn-1-yl]amino]carbo..

5-(3-Amino-1-propyn-1-yl)-2′-deoxy-3′-O-[(ethyldithio)methyl]uridine 5′-(tetrahydrogen triphosphate)

2′-Deoxy-3′-O-[(ethyldithio)methyl]-5-[2-[(2,2,2-trifluoroacetyl)amino]-1-propyn-1-yl]uridine

2′-Deoxy-5′-O-[(1,1-dimethylethyl)dimethylsilyl]-3′-O-[(ethyldithio)methyl]-5-[2-[(2,2,2-trifluoroacetyl)amino]-1-propyn-1-yl]uridine

N-Benzoyl-2′-deoxy-3′-O-[(ethyldithio)methyl]cytidine 5′-(tetrahydrogen triphosphate)