(2'R)-2-Amino-2'-deoxy-5'-O-[4,5-dihydro-8-methyl-3-oxido-9-(1-oxopropoxy)pyrido[3,4-e][1,3,2]oxazaphosphepin-3(1H)-yl]-2'-fluoro-2'-methyladenosine

2-Amino-5'-O-[4,5-dihydro-8-methyl-3-oxido-9-(1-oxopropoxy)pyrido[3,4-e][1,3,2]oxazaphosphepin-3(1H)-yl]-2'-C-methyladenosine

(2'R)-2-Amino-2'-deoxy-5'-O-[1,5-dihydro-8-methyl-3-oxido-9-(1-oxopropoxy)[1,3,2]dioxaphosphepino[5,6-c]pyridin-3-yl]-2'-fluoro-2'-methyladenosine

2-Amino-5'-O-[1,5-dihydro-8-methyl-3-oxido-8-(1-oxopropoxy)[1,3,2]dioxaphosphepino[5,6-c]pyridin-3-yl]-2'-C-methyladenosinev

(2'R)-2-Amino-2'-deoxy-5'-O-[4,5-dihydro-8-methyl-9-(2-methyl-1-oxopropoxy)-3-oxidopyrido[3,4-e][1,3,2]oxazaphosphepin-3(1H)-yl]-2'-fluoro-2'-methyladenosine

2-Amino-5'-O-[4,5-dihydro-8-methyl-9-(2-methyl-1-oxopropoxy)-3-oxidopyrido[3,4-e][1,3,2]oxazaphosphepin-3(1H)-yl]-2'-C-methyladenosine

(2'R)-2-Amino-2'-deoxy-5'-O-[1,5-dihydro-8-methyl-9-(2-methyl-1-oxopropoxy)-3-oxido[1,3,2]dioxaphosphepino[5,6-c]pyridin-3-yl]-2'-fluoro-2'-methyladenosine

2-Amino-5'-O-[1,5-dihydro-8-methyl-9-(2-methyl-1-oxopropoxy)-3-oxido[1,3,2]dioxaphosphepino[5,6-c]pyridin-3-yl]-2'-C-methyladenosine

2-Amino-5'-O-(5,9-dihydro-7-oxidopyrido[3,2-e][1,3,2]oxazaphosphepin-7(6H)-yl)-2'-C-methyladenosine

(2'R)-2-Amino-2'-deoxy-5'-O-(5,9-dihydro-7-oxido[1,3,2]dioxaphosphepino[5,6-b]pyridin-7-yl)-2'-fluoro-2'-methyladenosine

2-Amino-5'-O-(5,9-dihydro-7-oxido[1,3,2]dioxaphosphepino[5,6-b]pyridin-7-yl)-2'-C-methyladenosine

(2'R)-2-Amino-2'-deoxy-5'-O-(5,9-dihydro-7-oxidopyrido[3,2-e][1,3,2]oxazaphosphepin-7(6H)-yl)-2'-fluoro-2'-methyladenosine

5'-O-[Bis(4-methoxyphenyl)phenylmethyl]-5-[20-[3,4-bis(2-methyl-1-oxopropoxy)phenyl]-3,19-dioxo-8,11,14-trioxa-4,18-diazaeicos-1-yl]-2'-deoxyuridine

5'-[[(3S)-3-Amino-3-carboxypropyl]amino]-5'-deoxy-2-chloroadenosine

5-(17-Amino-3-oxo-8,11,14-trioxa-4-azaheptadec-1-yl)-5'-O-[bis(4-methoxyphenyl)phenylmethyl]-2'-deoxyuridine

5'-[[2-[[2,7-Bis[2-(dimethylamino)ethyl]-1,2,3,6,7,8-hexahydro-1,3,6,8-tetraoxobenzo[lmn][3,8]phenanthrolin-4-yl]amino]ethyl]amino]-5'-deoxy-5-methyluridine

5'-[[3-[[2,7-Bis[2-(dimethylamino)ethyl]-1,2,3,6,7,8-hexahydro-1,3,6,8-tetraoxobenzo[lmn][3,8]phenanthrolin-4-yl]amino]propyl]amino]-5'-deoxy-5-methyluridine

5'-[[4-[[2,7-Bis[2-(dimethylamino)ethyl]-9-[[2-(dimethylamino)ethyl]amino]-1,2,3,6,7,8-hexahydro-1,3,6,8-tetraoxobenzo[lmn][3,8]phenanthrolin-4-yl]amino]butyl]amino]-5'-deoxy-5-methyluridine

5'-[[6-[[2,7-Bis[2-(dimethylamino)ethyl]-1,2,3,6,7,8-hexahydro-1,3,6,8-tetraoxobenzo[lmn][3,8]phenanthrolin-4-yl]amino]hexyl]amino]-5'-deoxy-5-methyluridine

5'-[[5-[[2,7-Bis[2-(dimethylamino)ethyl]-1,2,3,6,7,8-hexahydro-1,3,6,8-tetraoxobenzo[lmn][3,8]phenanthrolin-4-yl]amino]pentyl]amino]-5'-deoxy-5-methyluridine