1H NMR (400 MHz, CDCl3) δ 7.86 - 7.78 (m, 4H), 7.66 (d, J = 8.5 Hz, 1H), 7.54 - 7.41 (m, 6H), 7.36 (d, J = 6.7 Hz, 1H), 6.41 (s, 1H), 4.75 (s, 1H), 4.69 - 4.57 (m, 2H), 2.92 - 2.73 (m, 2H). 13C NMR (100 MHz, CDCl3) δ 142.5, 137.1, 134.1, 133.5, 132.8, 128.6, 128.2, 128.1, 127.8, 127.6, 126.3, 126.1, 125.9, 123.3, 123.2, 122.8, 76.1, 67.0, 35.0. HRMS (EI): calcd for C21H18O: 286.1358, found: 286.1355.
