反应详情

The title compound was prepared by condensation of Intermediate 5 (400 mg, 1.289 mmol) with 2-butoxy-3-methoxybenzaldehyde (400 mg, 1.922 mmol) in presence of sodium ethoxide (175 mg, 2.578 mmol) in ethanol (15 ml) according to the procedure described in Example 24 to afford 271 mg of the desired product as an off-white solid; 1H NMR (300 MHz, DMSO-d6) δ 0.95 (t, J=6.3 Hz, 3H), 1.42-1.48 (m, 4H), 3.77 (s, 3H), 3.79-3.85 (m, 2H), 6.91-7.01 (m, 4H), 7.52 (d, J=4.8 Hz, 1H), 7.58 (d, J=7.8 Hz, 2H), 7.82 (d, J=8.4 Hz, 2H), 8.01 (d, J=4.8 Hz, 1H), 8.08 (d, J=15.6 Hz, 1H); ESI-MS (m/z) 501.18 (M+H)+.