Cl[C:2]1[C:7]([C:8]#[N:9])=[C:6]([C:10]2[CH:18]=[CH:17][C:13]3[O:14][CH2:15][O:16][C:12]=3[CH:11]=2)[C:5]([C:19]#[N:20])=[C:4]([O:21][CH2:22][C:23]2[CH:28]=[CH:27][CH:26]=[CH:25][CH:24]=2)[N:3]=1.[OH:29][CH2:30][CH2:31][NH2:32].O>C1COCC1>[OH:29][CH2:30][CH2:31][NH:32][C:2]1[C:7]([C:8]#[N:9])=[C:6]([C:10]2[CH:18]=[CH:17][C:13]3[O:14][CH2:15][O:16][C:12]=3[CH:11]=2)[C:5]([C:19]#[N:20])=[C:4]([O:21][CH2:22][C:23]2[CH:24]=[CH:25][CH:26]=[CH:27][CH:28]=2)[N:3]=130 mg (0.08 mmol) of 2-chloro-4-(1,3-benzodioxol-5-yl)-6-benzyloxy-3,5-pyridinedicarbonitrile (example 4, step 1) and 14.1 mg (0.23 mmol) of 2-hydroxyethylamine are shaken together in 0.5 ml of THF for about 16 h. Water is added to the reaction solution and the product that crystallizes out is filtered off with suction and dried under reduced pressure. The crude product is purified by silica gel chromatography using the mobile phases dichloromethane and dichloromethane/methanol 50:1.
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