N-[7-[5-Deoxy-5-(8-methyl-1,8-diazaspiro[4.5]dec-1-yl)-2,3-bis-O-(2-methyl-1-oxopropyl)-β-D-ribofuranosyl]-7H-pyrrolo[2,3-d]pyrimidin-4-yl]-2-methylpropanamide

7-[5-Deoxy-5-[8-[(1,1-dimethylethoxy)carbonyl]-1,8-diazaspiro[4.5]dec-1-yl]-2,3-bis-O-(2-methyl-1-oxopropyl)-β-D-ribofuranosyl]-7H-pyrrolo[2,3-d]pyrimidin-4-amine

N-[7-[5-Deoxy-5-[8-[(1,1-dimethylethoxy)carbonyl]-1,8-diazaspiro[4.5]dec-1-yl]-2,3-bis-O-(2-methyl-1-oxopropyl)-β-D-ribofuranosyl]-7H-pyrrolo[2,3-d]pyrimidin-4-yl]-2-methylpropanamide

4-Chloro-7-[5-(8-cyclopropyl-3,3-difluoro-1,8-diazaspiro[4.5]dec-1-yl)-5-deoxy-2,3-O-(1-methylethylidene)-β-D-ribofuranosyl]-7H-pyrrolo[2,3-d]pyrimidine

7-[5-[2-(Aminomethyl)-5,5-difluoro-1-piperidinyl]-5-deoxy-2,3-O-(1-methylethylidene)-β-D-ribofuranosyl]-7H-pyrrolo[2,3-d]pyrimidin-4-amine

N-[7-[5-Deoxy-5-[5,5-difluoro-2-[[(methylsulfonyl)oxy]methyl]-1-piperidinyl]-2,3-O-(1-methylethylidene)-β-D-ribofuranosyl]-7H-pyrrolo[2,3-d]pyrimidin-4-yl]methanesulfonamide

7-[5-Deoxy-5-[5,5-difluoro-2-(hydroxymethyl)-1-piperidinyl]-2,3-O-(1-methylethylidene)-β-D-ribofuranosyl]-7H-pyrrolo[2,3-d]pyrimidin-4-amine

7-[5-Deoxy-5-(3,3-difluoro-1,8-diazaspiro[4.5]dec-1-yl)-2,3-O-(1-methylethylidene)-β-D-ribofuranosyl]-7H-pyrrolo[2,3-d]pyrimidin-4-amine

7-[5-Deoxy-2,3-O-(1-methylethylidene)-5-(5-oxa-2,8-diazaspiro[3.5]non-8-yl)-β-D-ribofuranosyl]-7H-pyrrolo[2,3-d]pyrimidin-4-amine

7-[5-Deoxy-5-(2,6-diazaspiro[3.5]non-6-yl)-2,3-O-(1-methylethylidene)-β-D-ribofuranosyl]-7H-pyrrolo[2,3-d]pyrimidin-4-amine

N-Benzoyl-5′-deoxy-5′-(1,6-diazaspiro[3.3]hept-1-yl)-2′,3′-O-(1-methylethylidene)adenosine

N-Benzoyl-5′-deoxy-5′-(1,6-diazaspiro[3.3]hept-6-yl)-2′,3′-O-(1-methylethylidene)adenosine

N-Benzoyl-5′-deoxy-5′-(2,5-diazaspiro[3.4]oct-5-yl)-2′,3′-O-(1-methylethylidene)adenosine

N-Benzoyl-5′-deoxy-5′-(1,6-diazaspiro[3.4]oct-1-yl)-2′,3′-O-(1-methylethylidene)adenosine

N-Benzoyl-5′-deoxy-5′-(2,6-diazaspiro[3.4]oct-6-yl)-2′,3′-O-(1-methylethylidene)adenosine

N-Benzoyl-5′-deoxy-5′-(1,6-diazaspiro[3.4]oct-6-yl)-2′,3′-O-(1-methylethylidene)adenosine

N-Benzoyl-5′-deoxy-5′-(2,6-diazaspiro[3.4]oct-2-yl)-2′,3′-O-(1-methylethylidene)adenosine

N-Benzoyl-5′-deoxy-5′-(2,6-diazaspiro[3.5]non-6-yl)-2′,3′-O-(1-methylethylidene)adenosine

N-Benzoyl-5′-deoxy-5-(1,7-diazaspiro[3.5]non-1-yl)-2′,3′-O-(1-methylethylidene)adenosine

N-Benzoyl-5′-deoxy-5′-(2,5-diazaspiro[3.4]oct-2-yl)-2′,3′-O-(1-methylethylidene)adenosine