熔点: 117.3 - 118.8 ^oC. ¹H NMR (400 MHz, CDCl3) δ 8.52 (s, 1H), 8.07 (d, J = 8.6 Hz, 1H), 7.99 (d, J = 7.9 Hz, 1H), 7.92 (dd, J = 13.2, 8.5 Hz, 2H), 7.59 (dt, J = 14.8, 7.0 Hz, 2H), 7.44 (d, J = 7.6 Hz, 2H), 7.35 (t, J = 7.3 Hz, 2H), 7.24 (s, 1H), 6.22 (s, 1H), 3.78 (s, 1H), 2.65 (s, 2H), 2.56 (dd, J = 27.1, 14.2 Hz, 2H), 2.25 (d, J = 12.5 Hz, 1H), 2.01 – 1.90 (m, 1H). ¹³C NMR (101 MHz, CDCl₃) δ 203.33, 141.77, 136.34, 135.63, 133.64, 132.69, 129.87, 129.66, 128.66, 128.52, 128.40, 127.85, 126.99, 126.86, 125.12, 124.34, 123.21, 41.39, 29.01, 27.26, 26.43. HRMS (ESI): calcd for C₂₃H₂₁O [M + H]: 313.1592, found: 313.1596.