熔点: 111.1 - 112.0 ^oC. ¹H NMR (400 MHz, CDCl3) δ 7.67 (d, J = 16.0 Hz, 1H), 7.59 (d, J = 3.0 Hz, 2H), 7.41 (d, J = 6.1 Hz, 5H), 7.33 (t, J = 7.4 Hz, 2H), 7.24 (d, J = 7.4 Hz, 1H), 6.90 (d, J = 16.0 Hz, 1H), 6.18 (s, 1H), 3.08 – 2.97 (m, 1H), 2.59 (s, 2H), 2.49 (d, J = 11.7 Hz, 2H), 2.20 (d, J = 12.8 Hz, 1H), 1.90 – 1.78 (m, 1H). ¹³C NMR (101 MHz, CDCl3) δ 202.54, 142.79, 141.77, 136.35, 134.65, 130.50, 128.98, 128.37, 128.32, 126.90, 125.07, 124.64, 122.97, 44.83, 27.98, 27.16, 25.61. HRMS (ESI): calcd for C₂₁H₂₁O [M + H]: 289.1592, found: 289.1595.