反应详情

Following the procedure described above for the synthesis of compound 32 (Scheme 9) but substituting compound 31 for compound 52, title compound 53 was obtained in 31% yield. 1H NMR (400 MHz, DMSO-d6) δ (ppm): 12.46 (s, 1H), 11.82 (s, 1H), 8.63 (d, J=2.2 Hz, 1H), 8.54 (d, J=5.5 Hz, 1H), 8.37 (s, 1H), 8.29 (dd, J=8.2, 0.8 Hz, 1H), 8.02 (d, J=11.9 Hz, 1H), 7.91 (dd, J=8.1, 1.7 Hz, 1H), 7.53-7.52 (m, 2H), 7.37 (dd, J=8.8, 5.7 Hz, 2H), 7.17 (t, J=9.0 Hz, 2H), 6.68 (dd, J=5.4, 0.9 Hz, 1H), 5.63 (s, 1H), 3.82 (s, 2H), 3.64-3.50 (m, 4H), 1.17 (t, J=7.0 Hz, 6H). MS (m/z): 635.1 (M+H).