Uridine, 5′-O-[bis(4-methoxyphenyl)phenylmethyl]-5-[4-[(4-chlorobenzoyl)oxy]-1-butyn-1-yl]-2′-deoxy-, 3′-[2-cyanoethyl N,N-bis(1-methylethyl)phosphoramidite]

N-[4-[1-[5-O-[Bis(4-methoxyphenyl)phenylmethyl]-3-O-[[bis(1-methylethyl)amino](2-cyanoethoxy)phosphino]-2-deoxy-β-D-erythro-pentofuranosyl]-4,5-dihydro-4-oxo-1H-pyrazolo[3,4-d]pyrimidin-3-yl]-3-butyn-1-yl]-4-[[4-[(1E)-2-(2-chloro-4-nitrophenyl)diazenyl]phenyl]methylamino]butanamide

N′-[1-[3-O-[Bis(4-methoxyphenyl)phenylmethyl]-5-O-[[bis(1-methylethyl)amino](2-cyanoethoxy)phosphino]-2-deoxy-β-D-erythro-pentofuranosyl]-4,5-dihydro-4-oxo-1H-pyrazolo[3,4-d]pyrimidin-6-yl]-N,N-dimethylmethanimidamide

N,N′-[3-[4-(Acetyloxy)-1-butyn-1-yl]-1-[5-O-[bis(4-methoxyphenyl)phenylmethyl]-3-O-[[bis(1-methylethyl)amino](2-cyanoethoxy)phosphino]-2-deoxy-β-D-erythro-pentofuranosyl]-1H-pyrazolo[3,4-d]pyrimidine-4,6-diyl]bis[2,3-difluorobenzamide]

Uridine, 5-[3-[[[3′,6′-bis(2,2-dimethyl-1-oxopropoxy)-3-oxospiro[isobenzofuran-1(3H),9′-[9H]xanthen]-6-yl]carbonyl]amino]propyl]-3′-O-[bis(4-methoxyphenyl)phenylmethyl]-2′-deoxy-, 5′-[2-cyanoethyl N,N-bis(1-methylethyl)phosphoramidite]

N-[4-[1-[5-O-[Bis(4-methoxyphenyl)phenylmethyl]-3-O-[[bis(1-methylethyl)amino](2-cyanoethoxy)phosphino]-2-deoxy-β-D-erythro-pentofuranosyl]-4,5-dihydro-4-oxo-1H-pyrazolo[3,4-d]pyrimidin-3-yl]-3-butyn-1-yl]-3′,6′-bis(2,2-dimethyl-1-oxopropoxy)-3-oxospiro[isobenzofuran-1(3H),9′-[9H]xanthene]-6-carboxa..

N-[4-[1-[5-O-[Bis(4-methoxyphenyl)phenylmethyl]-3-O-[[bis(1-methylethyl)amino](2-cyanoethoxy)phosphino]-2-deoxy-β-D-erythro-pentofuranosyl]-4,5-dihydro-4-oxo-1H-pyrazolo[3,4-d]pyrimidin-3-yl]-3-butyn-1-yl]-1-pyrenecarboxamide

N,N′-[3-[4-(Acetyloxy)-1-butyn-1-yl]-1-[3-O-[bis(4-methoxyphenyl)phenylmethyl]-5-O-[[bis(1-methylethyl)amino](2-cyanoethoxy)phosphino]-2-deoxy-β-D-erythro-pentofuranosyl]-1H-pyrazolo[3,4-d]pyrimidine-4,6-diyl]bis[2,3-difluorobenzamide]

N-[4-[1-[3-O-[Bis(4-methoxyphenyl)phenylmethyl]-5-O-[[bis(1-methylethyl)amino](2-cyanoethoxy)phosphino]-2-deoxy-β-D-erythro-pentofuranosyl]-4,5-dihydro-4-oxo-1H-pyrazolo[3,4-d]pyrimidin-3-yl]-3-butyn-1-yl]-2,2,2-trifluoroacetamide

Uridine, 5-[3-[[[3′,6′-bis(2,2-dimethyl-1-oxopropoxy)-3-oxospiro[isobenzofuran-1(3H),9′-[9H]xanthen]-6-yl]carbonyl]amino]propyl]-5′-O-[bis(4-methoxyphenyl)phenylmethyl]-2′-deoxy-, 3′-[2-cyanoethyl N,N-bis(1-methylethyl)phosphoramidite]

Uridine, 3′-O-[bis(4-methoxyphenyl)phenylmethyl]-5-[4-[(4-chlorobenzoyl)oxy]-1-butyn-1-yl]-2′-deoxy-, 5′-[2-cyanoethyl N,N-bis(1-methylethyl)phosphoramidite]