反应详情

1-(3-Dimethylaminopropyl)-3-ethylcarbodiimide hydrochloride (0.101 g) and 2-hydroxypyridine N-oxide (0.059 g) were added in turn to a stirred mixture of 2-[4-(6,7-dimethoxyquinazolin-4-yloxy)phenyl]acetic acid (0.15 g), 2-amino-5-dimethylaminopyridine (0.073 g), diisopropylethylamine (0.092 ml) and DMF (2 ml) and the resultant mixture was stirred at ambient temperature for 16 hours. The resultant reaction mixture was transferred onto a Waters ‘β Basic Hypersil’ reversed-phase preparative HPLC column (5 microns silica, 30 mm diameter, 250 mm length) that was eluted with decreasingly polar mixtures of water (containing 0.2% ammonium carbonate) and acetonitrile as eluent. There was thus obtained the title compound (0.148 g); 1H NMR: (DMSOd6) 2.88 (s, 6H), 3.71 (s, 2H), 3.98 (s, 3H), 3.98 (s, 3H), 7.19 (m, 1H), 7.25 (d, 2H), 7.38 (s, 1H), 7.44 (d, 2H), 7.55 (s, 1H), 7.84 (d, 1H), 7.90 (d, 1H), 8.53 (s, 1H), 10.43 (s, 1H); Mass Spectrum: M+H+ 460.

1. customThe resultant reaction mixture
2. washwas eluted with decreasingly polar mixtures of water (containing 0.2% ammonium carbonate) and acetonitrile as eluent