熔点： 159.1 – 160.8 ^oC. ¹H NMR (400 MHz, CDCl₃) δ 7.79 (d, J = 7.6 Hz, 1H), 7.59 (t, J = 7.4 Hz, 1H), 7.43 (d, J = 8.0 Hz, 3H), 7.39 (d, J = 7.4 Hz, 1H), 7.33 (t, J = 7.5 Hz, 2H), 7.23 (d, J = 6.7 Hz, 1H), 6.20 (d, J = 4.5 Hz, 1H), 3.11 (d, J= 17.3 Hz, 1H), 2.96 (d, J = 17.3 Hz, 1H), 2.63 (dd, J = 26.5, 11.9 Hz, 3H), 2.05 (dt, J = 15.1, 5.6 Hz, 2H), 1.72 – 1.66 (m, 1H). ¹³C NMR (101 MHz, CDCl₃) δ 211.07, 152.80, 141.52, 136.05, 135.90, 134.95, 128.36, 127.52, 127.02, 126.74, 125.06, 124.36, 122.55, 48.17, 39.10, 35.08, 29.30, 24.86. HRMS (ESI): calcd for C₂₀H₁₉O [M + H]: 275.1436, found: 275.1438.