反应详情

The title compound was prepared by the reaction of Intermediate 4 (350 mg, 1.325 mmol) with 2-isobutoxy-3-methoxybenzaldehyde (409 mg, 1.961 mmol) in presence of sodium ethoxide (178 mg, 2.264 mmol) according to the procedure described in Example 9 to give 270 mg of the desired product as a light yellow solid; 1H NMR (300 MHz, DMSO-d6) δ 1.85 (d, J=3.9 Hz, 4H), 2.03 (d, J=7.8 Hz, 3H), 3.77 (s, 3H), 3.83 (d, J=6.3 Hz, 2H), 6.84 (d, J=15.6 Hz, 1H), 6.95-7.00 (m, 3H), 7.50-7.58 (m, 3H), 7.92-8.04 (m, 3H), 8.14 (d, J=15.3 Hz, 1H); ESI-MS (m/z) 470.45 (M+H)+.