1-[(2R,3aR,4R,6R,6aS)-4-[[(1,1-Dimethylethyl)diphenylsilyl]oxy]hexahydro-6-[(4-nitrobenzoyl)oxy]-2H-cyclopenta[b]furan-2-yl]-5-methyl-2,4(1H,3H)-pyrimidinedione

(2R,3aR,4R,6R,6aS)-2-[6-(Benzoylamino)-9H-purin-9-yl]-6-[bis(4-methoxyphenyl)phenylmethoxy]hexahydro-2H-cyclopenta[b]furan-4-yl 2-cyanoethyl N,N-bis(1-methylethyl)phosphoramidite

1-[(2S,3aS,4R,6R,6aS)-Hexahydro-4-hydroxy-6-[(4-nitrobenzoyl)oxy]-2H-cyclopenta[b]furan-2-yl]-5-methyl-2,4(1H,3H)-pyrimidinedione

1-[(2S,3aR,4R,6R,6aS)-4-[[(1,1-Dimethylethyl)diphenylsilyl]oxy]hexahydro-6-[(4-nitrobenzoyl)oxy]-2H-cyclopenta[b]furan-2-yl]-5-methyl-2,4(1H,3H)-pyrimidinedione

(2S,3aS,4R,6R,6aS)-4-[Bis(4-methoxyphenyl)phenylmethoxy]-2-[2-[[(dimethylamino)methylene]amino]-1,6-dihydro-6-oxo-9H-purin-9-yl]hexahydro-2H-cyclopenta[b]furan-6-yl 2-cyanoethyl [P(S)]-N,N-bis(1-methylethyl)phosphoramidite

(2S,3aS,4R,6R,6aS)-4-[Bis(4-methoxyphenyl)phenylmethoxy]-2-[2-[[(dimethylamino)methylene]amino]-1,6-dihydro-6-oxo-9H-purin-9-yl]hexahydro-2H-cyclopenta[b]furan-6-yl 2-cyanoethyl [P(R)]-N,N-bis(1-methylethyl)phosphoramidite

N′-[9-[(2S,3aS,4R,6R,6aS)-4-[Bis(4-methoxyphenyl)phenylmethoxy]hexahydro-6-hydroxy-2H-cyclopenta[b]furan-2-yl]-6,9-dihydro-6-oxo-1H-purin-2-yl]-N,N-dimethylmethanimidamide

2-Amino-9-[(2S,3aS,4R,6R,6aS)-4-[bis(4-methoxyphenyl)phenylmethoxy]hexahydro-6-hydroxy-2H-cyclopenta[b]furan-2-yl]-1,9-dihydro-6H-purin-6-one

N-[9-[(2S,3aS,4R,6R,6aS)-6-(Acetyloxy)-4-[bis(4-methoxyphenyl)phenylmethoxy]hexahydro-2H-cyclopenta[b]furan-2-yl]-6,9-dihydro-6-oxo-1H-purin-2-yl]acetamide

N-[9-[(2S,3aS,4R,6R,6aS)-6-(Acetyloxy)hexahydro-4-hydroxy-2H-cyclopenta[b]furan-2-yl]-6,9-dihydro-6-oxo-1H-purin-2-yl]acetamide

N-[9-[(2S,3aR,4R,6R,6aS)-6-(Acetyloxy)-4-[[(1,1-dimethylethyl)diphenylsilyl]oxy]hexahydro-2H-cyclopenta[b]furan-2-yl]-6,9-dihydro-6-oxo-1H-purin-2-yl]acetamide

2-Amino-9-[(2S,3aR,4R,6R,6aS)-4-[[(1,1-dimethylethyl)diphenylsilyl]oxy]hexahydro-6-hydroxy-2H-cyclopenta[b]furan-2-yl]-1,9-dihydro-6H-purin-6-one

(2S,3aS,4R,6R,6aS)-2-[6-(Benzoylamino)-9H-purin-9-yl]-4-[bis(4-methoxyphenyl)phenylmethoxy]hexahydro-2H-cyclopenta[b]furan-6-yl 2-cyanoethyl [P(S)]-N,N-bis(1-methylethyl)phosphoramidite

(2S,3aS,4R,6R,6aS)-2-[6-(Benzoylamino)-9H-purin-9-yl]-4-[bis(4-methoxyphenyl)phenylmethoxy]hexahydro-2H-cyclopenta[b]furan-6-yl 2-cyanoethyl [P(R)]-N,N-bis(1-methylethyl)phosphoramidite

N-[9-[(2S,3aS,4R,6R,6aS)-4-[Bis(4-methoxyphenyl)phenylmethoxy]hexahydro-6-hydroxy-2H-cyclopenta[b]furan-2-yl]-9H-purin-6-yl]benzamide

N-[9-[(2S,3aS,4R,6R,6aS)-6-(Acetyloxy)-4-[bis(4-methoxyphenyl)phenylmethoxy]hexahydro-2H-cyclopenta[b]furan-2-yl]-9H-purin-6-yl]benzamide

N-[9-[(2S,3aS,4R,6R,6aS)-6-(Acetyloxy)hexahydro-4-hydroxy-2H-cyclopenta[b]furan-2-yl]-9H-purin-6-yl]benzamide

(2S,3aS,4R,6R,6aS)-2-[4-(Benzoylamino)-5-methyl-2-oxo-1(2H)-pyrimidinyl]-4-[bis(4-methoxyphenyl)phenylmethoxy]hexahydro-2H-cyclopenta[b]furan-6-yl 2-cyanoethyl [P(S)]-N,N-bis(1-methylethyl)phosphoramidite

(2S,3aS,4R,6R,6aS)-2-[4-(Benzoylamino)-5-methyl-2-oxo-1(2H)-pyrimidinyl]-4-[bis(4-methoxyphenyl)phenylmethoxy]hexahydro-2H-cyclopenta[b]furan-6-yl 2-cyanoethyl [P(R)]-N,N-bis(1-methylethyl)phosphoramidite

N-[1-[(2S,3aS,4R,6R,6aS)-4-[Bis(4-methoxyphenyl)phenylmethoxy]hexahydro-6-hydroxy-2H-cyclopenta[b]furan-2-yl]-1,2-dihydro-5-methyl-2-oxo-4-pyrimidinyl]benzamide