[Br:1][C:2]1[C:3]([CH3:10])=[C:4]([CH:8]=O)[CH:5]=[N:6][CH:7]=1.[CH2:11]([S:13]([NH2:16])(=[O:15])=[O:14])[CH3:12].[BH4-].[Na+]>CO>[Br:1][C:2]1[C:3]([CH3:10])=[C:4]([CH2:8][NH:16][S:13]([CH2:11][CH3:12])(=[O:15])=[O:14])[CH:5]=[N:6][CH:7]=1In analogy to the procedure described for the preparation of intermediate A-11, 5-bromo-4-methyl-pyridine-3-carbaldehyde has been reacted first with ethanesulfonamide, followed by reduction of the thus formed imine with NaBH4 in MeOH to give the title compound as an off-white solid. MS: 293.1 and 295.3 (M+H+).
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