反应详情

Following the procedure as described in Example 1, making variations as required to replace 2-(1-(4-fluorobenzyl)-5-oxo-1H-1,2,4-triazol-4(5H)-yl)-4-methylthiazole-5-carboxylic acid with 2-(3-isobutyl-2-oxoimidazolidin-1-yl)-4-methylthiazole-5-carboxylic acid, the title compound was obtained as a colorless solid in 54% yield: mp: 212-215° C. (methanol/hexanes); 1H NMR (300 MHz, CDCl3) δ 5.69 (s, 2H), 4.13-4.08 (m, 2H), 3.61-3.56 (m, 2H), 3.12 (d, J=7.5 Hz, 2H), 2.60 (s, 3H); 1.97-1.88 (m, 1H), 0.94 (d, J=6.7 Hz, 6H); 13C NMR (75 MHz, CDCl3) δ 165.5, 157.9, 155.6, 153.8, 116.6, 51.5, 42.8, 41.9, 26.7, 19.9, 17.2; MS (ES+) m/z 282.9 M+1).