熔点： 89.2 - 90.8 ^oC. ¹H NMR (400 MHz, CDCl₃) δ 8.00 (d, J = 7.2 Hz, 2H), 7.79 (t, J = 9.9 Hz, 4H), 7.57 (dd, J = 16.9, 7.9 Hz, 2H), 7.50 – 7.41 (m, 4H), 6.33 (s, 1H), 3.62 (t, J = 10.7 Hz, 1H), 2.70 (s, 2H), 2.66 – 2.39 (m, 2H), 2.27 – 2.16 (m, 1H), 1.99 - 1.85 (m, 1H). ¹³C NMR (101 MHz, CDCl3) δ 203.30, 138.86, 136.31, 136.03, 133.55, 133.08, 132.60, 128.78, 128.41, 128.14, 127.82, 127.58, 126.15, 125.63, 123.85, 123.77, 123.41, 41.36, 28.92, 27.20, 26.36. HRMS (ESI): calcd for C₂₃H₂₁O [M + H]: 313.1592, found: 313.1589.