Cl[C:2]1[N:7]=[C:6]2[C:8]([CH3:22])([CH3:21])[N:9]([CH2:12][C:13]3[CH:18]=[CH:17][C:16]([O:19][CH3:20])=[CH:15][CH:14]=3)[C:10](=[O:11])[C:5]2=[CH:4][CH:3]=1.[O-:23][CH2:24][CH3:25].[Na+]>CN(C=O)C>[CH2:24]([O:23][C:2]1[N:7]=[C:6]2[C:8]([CH3:22])([CH3:21])[N:9]([CH2:12][C:13]3[CH:18]=[CH:17][C:16]([O:19][CH3:20])=[CH:15][CH:14]=3)[C:10](=[O:11])[C:5]2=[CH:4][CH:3]=1)[CH3:25]To solution of 2-chloro-6-(4-methoxy-benzyl)-7,7-dimethyl-6,7-dihydro-pyrrolo[3,4-b]pyridin-5-one (intermediate A-16 [F], 3.15 g, 10 mmol) in DMF (30 mL) was added sodium ethoxide (1.02 g, 15 mmol) at room temperature. The reaction mixture was stirred at room temperature for 4 hours before it was quenched by water and extracted with EtOAc. The organic layer was washed with brine, dried over anhy. Na2SO4, filtered and concentrated in vacuo to give title product (2.9 g, 89%) as a solid. MS: 327.2 (M+H+).
読み込み中…