C([O:3][C:4](=O)[CH2:5][N:6]([CH2:16][C:17]1[C:18]([NH2:24])=[N:19][CH:20]=[C:21]([Br:23])[CH:22]=1)[CH2:7][CH2:8][CH2:9][N:10]1[CH2:15][CH2:14][O:13][CH2:12][CH2:11]1)C.[H-].[Na+]>CS(C)=O.O>[Br:23][C:21]1[CH:20]=[N:19][C:18]2[NH:24][C:4](=[O:3])[CH2:5][N:6]([CH2:7][CH2:8][CH2:9][N:10]3[CH2:15][CH2:14][O:13][CH2:12][CH2:11]3)[CH2:16][C:17]=2[CH:22]=1A solution of [(2-amino-5-bromo-pyridin-3-ylmethyl)-(3-morpholin-4-yl-propyl)amino]acetic acid ethyl ester (11.8 g, 28.3 mmol) in DMSO (200 mL) was treated with NaH (60% dispersion in mineral oil, 1.13 g, 28.3 mmol). After stirring at room temperature overnight, the mixture was diluted with H2O (400 mL) and then extracted with EtOAc (7×250 mL). The combined organic layers were washed with H2O (2×200 mL) and brine (200 mL), dried over Na2SO4, filtered and the solvent was removed in vacuo. Purification by flash column chromatography (silica gel, CH2Cl2/MeOH, 97:3 to 96:4) gave the title compound (5.76 g, 55%) as an off-white powder: MS (ESI) m/e 369 (M+H)+.
Wird geladen…
