熔点: 176.1 - 177.9 oC。1H NMR (400 MHz, CDCl3) δ 8.00 (d, J = 8.8 Hz, 2H), 7.41 (d, J = 7.4 Hz, 2H), 7.33 (t, J = 7.6 Hz, 2H), 7.23 (d, J = 7.3 Hz, 1H), 6.97 (d, J = 8.8 Hz, 2H), 6.19 (d, J = 4.2 Hz, 1H), 3.88 (s, 3H), 3.56 (ddd, J = 12.0, 6.6, 3.8 Hz, 1H), 2.63 – 2.57 (m, 2H), 2.57 – 2.35 (m, 2H), 2.21 – 2.11 (m, 1H), 1.89 (tt, J = 13.1, 8.6 Hz, 1H). 13C NMR (101 MHz, CDCl3) δ 201.85, 163.44, 141.78, 136.23, 130.61, 129.26, 128.30, 126.86, 125.05, 123.28, 113.85, 55.50, 40.95, 28.92, 27.26, 26.43. HRMS (EI): calcd for C20H20O2: 292.1463, found: 292.1465.