反应详情

A procedure similar to that in Example 4 was used. 5-benzyl-4-(4-methoxy-phenyl)-thiazol-2-ylamine prepared in Example 1 and 3-(3,4-dimethoxy-phenyl)-propionyl chloride prepared in the step 1 were used as starting materials, allowed to react at 35-40° C. for 10 hours, followed by post-treatment to obtain a crude product, which was purified by a silica gel column chromatography eluted with petroleum ether and ethyl acetate (4:1) to obtain a product as a white solid in a yield of 65.0%, mp: 142-143└. 1H-NMR (CDCl3, 400 MHz) δ: 2.12 (2H, t, J=7.72 Hz), 2.74 (2H, t, J=7.72 Hz), 3.80 (6H, s, 2×OCH3), 3.83 (3H, s, OCH3), 4.18 (2H, s, CH2), 6.51 (1H, dd, J=8.16, 1.96 Hz, ArH), 6.56 (1H, d, J=1.96 Hz, ArH), 6.69 (1H, d, J=8.16 Hz, ArH), 6.83 (2H, d, J=8.68 Hz, ArH), 7.21˜7.33 (5H, m, ArH), 7.42 (2H, d, J=8.68 Hz, ArH), 11.05 (1H, br, CONH); EI-MS m/e (%): 488.1 (M+, 66), 296.0 (100); HREI-MS Calcd. for C28H28N2O4S: 488.1770. found: 488.1764. Anal. Calcd. for C28H28N2O4S: C, 68.83; H, 5.78; N, 5.73. found: C, 68.69; H, 5.67; N, 6.09.

1. customto react at 35-40° C. for 10 hours
2. customto obtain a crude product, which
3. customwas purified by a silica gel column chromatography
4. washeluted with petroleum ether and ethyl acetate (4:1)