Sodium hydride → 6-{[(1R,3S,4S)-3-{[tert-butyl(dimethyl)silyl]oxy}-4-({[tert-butyl(dimethyl)silyl]-oxy}methyl)cyclopentyl]oxy}-9-(tetrahydro-2H-pyran-2-yl)-9H-purine

Reaction equation

[H-].[Na+].[Si:3]([O:10][C@@H:11]1[C@H:15]([CH2:16][O:17][Si:18]([C:21]([CH3:24])([CH3:23])[CH3:22])([CH3:20])[CH3:19])[CH2:14][C@@H:13]([OH:25])[CH2:12]1)([C:6]([CH3:9])([CH3:8])[CH3:7])([CH3:5])[CH3:4].Cl[C:27]1[N:35]=[CH:34][N:33]=[C:32]2[C:28]=1[N:29]=[CH:30][N:31]2[CH:36]1[CH2:41][CH2:40][CH2:39][CH2:38][O:37]1>CN(C=O)C>[Si:3]([O:10][C@@H:11]1[C@H:15]([CH2:16][O:17][Si:18]([C:21]([CH3:24])([CH3:23])[CH3:22])([CH3:19])[CH3:20])[CH2:14][C@@H:13]([O:25][C:27]2[N:35]=[CH:34][N:33]=[C:32]3[C:28]=2[N:29]=[CH:30][N:31]3[CH:36]2[CH2:41][CH2:40][CH2:39][CH2:38][O:37]2)[CH2:12]1)([C:6]([CH3:9])([CH3:8])[CH3:7])([CH3:5])[CH3:4]