反应详情

The title compound was prepared by condensation of Intermediate 4 (335 mg, 1.252 mmol) with 2-(2-ethoxyethoxy)-3-methoxy-benzaldehyde (339 mg, 1.753 mmol) in presence of sodium ethoxide (170 mg, 2.506 mmol) according to the procedure described in Example 9 to yield 231 mg of the desired product as a light yellow solid; 1H NMR (300 MHz, DMSO-d6) δ 1.16 (t, J=6.6 Hz, 3H), 3.45-3.52 (m, 4H), 3.78 (s, 3H), 4.00-4.08 (m, 2H), 6.78 (d, J=15.6 Hz, 1H), 6.94-7.01 (m, 3H), 7.50-7.58 (m, 3H), 7.92 (d, J=7.8 Hz, 2H), 8.02 (d, J=4.8 Hz, 1H), 8.20 (d, J=15.6 Hz, 1H); ESI-MS (m/z) 474.45 (M+H)+.