反应详情

Following the procedure as described in Example 1, making variations only as required to use 2-(4-hydroxy-2-oxopyridin-1(2H)-yl)-4-methylthiazole-5-carboxylic acid in place of 4-methyl-2-(2-oxo-4-phenylpyridin-1(2H)-yl)thiazole-5-carboxylic acid to react with pyridin-4-ylmethanamine, the title compound was obtained as a colorless solid in 46% yield: mp 275-278° C. (dichloromethane/methanol); 1H NMR (300 MHz, DMSO-d6) δ 11.59 (br s, 1H), 8.88-8.78 (m, 1H), 8.58 (t, J=8.9 Hz, 1H), 8.47-8.44 (m, 2H), 7.26-7.23 (m, 2H), 6.27-6.22 (m, 1H), 5.85-5.80 (m, 1H), 4.44-4.30 (m, 2H), 2.56 (s, 3H); 13C NMR (75 MHz, DMSO-d6) δ 167.9, 162.2, 161.6, 154.2, 150.6, 149.9, 148.8, 132.6, 123.2, 122.6, 104.4, 98.0, 42.2, 17.5; MS (ES+) m/z 343.2 (M+1).