[C@@H:1]1([N:10]2[CH:17]=[CH:16][C:14]([NH2:15])=[N:13][C:11]2=[O:12])[O:9][C@H:6]([CH2:7][OH:8])[C@@H:4]([OH:5])[C@H:2]1[OH:3].[H-].[Na+].I[CH2:21][CH2:22][CH2:23][CH2:24][CH2:25][CH2:26][CH2:27][CH2:28][CH3:29]>CN(C=O)C>[CH2:21]([O:3][C@@H:2]1[C@H:4]([OH:5])[C@@H:6]([CH2:7][OH:8])[O:9][C@H:1]1[N:10]1[CH:17]=[CH:16][C:14]([NH2:15])=[N:13][C:11]1=[O:12])[CH2:22][CH2:23][CH2:24][CH2:25][CH2:26][CH2:27][CH2:28][CH3:29]Cytidine (10.1 g, 0.0415 mol), sodium hydride (2.0 g, 1.2 eq), iodononane (9.8 ml, 1.2 eq.) in DMF (100 ml) were reacted as per the procedure of Example 71, Step 1 to yield the 2' and 3' isomers as a sticky foam (11.6 g).
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