熔点: 80.6 - 82.4 ^oC. ¹H NMR (400 MHz, CDCl₃) δ 7.65 (s, 1H), 7.44 (d, J = 7.6 Hz, 2H), 7.36 (t, J = 7.6 Hz, 2H), 7.30 – 7.27 (m, 2H), 6.60 (dd, J = 3.4, 1.5 Hz, 1H), 6.21 (d, J = 4.6 Hz, 1H), 3.43 (tdd, J = 9.5, 5.4, 2.6 Hz, 1H), 2.64 (d, J = 3.0 Hz, 2H), 2.61 – 2.42 (m, 2H), 2.21 (dd, J = 11.4, 3.4 Hz, 1H), 2.00 – 1.87 (m, 1H). ¹³C NMR (101 MHz, CDCl₃) δ 192.33, 152.37, 146.38, 141.75, 136.24, 128.30, 126.89, 125.06, 122.94, 117.31, 112.24, 42.04, 28.18, 27.17, 25.91. HRMS (EI): calcd for C₁₇H₁₆O₂: 252.1150, found: 252.1149.