N-1-[(1R,2S,3S,4R)-2-(methoxymethoxy)-3-methoxy-4-(hydroxymethyl)cyclopentyl]-5'-O-{bis(phenylsulfanyl)phosphoryl}-2',3'-O-isopropylideneadenosine

(1R,2S,3R,4R)-1-tert-butoxycarbonylamino-2-methoxymethoxy-3-hydroxy-4-(triisopropylsiloxymethyl)cyclopentane

N-1-{(1R,2S,3S,4R)-2-(methoxymethoxy)-3-methoxy-4-(hydroxymethyl)cyclopentyl}-5'-O-(tert-butyldimethylsilyl)-2',3'-O-isopropylideneadenosine

(1R,2S,3S,4R)-1-tert-butoxycarbonylamino-2-(methoxymethoxy)-3-methoxy-4-(hydroxymethyl)cyclopentane

N-1-{(1R,2S,3S,4R)-2-(methoxymethoxy)-3-methoxy-4-[bis(4-methoxyphenyl)(phenyl)methoxymethyl]cyclopentyl}-5'-O-{bis(phenylsulfanyl)phosphoryl}-2',3'-O-isopropylideneadenosine

(1R,2S,3S,4R)-1-amino-2-(methoxymethoxy)-3-methoxy-4-(hydroxymethyl)cyclopentane

N-1-{(1R,2S,3S,4R)-2-(methoxymethoxy)-3-methoxy-4-[bis(4-methoxyphenyl)(phenyl)methoxymethyl]cyclopentyl}-2',3'-O-isopropylideneadenosine

tert-butyl ((1R,2S,3S,4R)-3-methoxy-2-(methoxymethoxy)-4-(((triisopropylsilyl)oxy)methyl)cyclopentyl)carbamate

(1R,2S,3S,4R)-1-tert-butoxycarbonylamino-2-(methoxymethoxy)-3-hydroxy-4-(triisopropylsiloxymethyl)cyclopentane