“…196~198 ℃; 1 H NMR (500 MHz, CDCl 3 ) δ: 9.04 (s, 1H), 8.07~8.05 (m, 2H), 7.85 (d,J=16.5 Hz,1H),7.77~ 7.74 (m,1H),7.71~7.68 (m,1H),7.56 (d,J=8.0 Hz,2H),7.34 (d,J=16.5 Hz,1H),7.26~7.23 (m,2H), 2.40 (s, 3H); 13 C NMR (125.4 MHz, CDCl 3 ) δ: 150. 7, 144.5, 142.5, 141.5, 139.5, 136.5, 133.3, 130.3, 129.7, 129.2, 127.5, 124.4, 21.4; MS (EI) m/z (%): 246 (30), 245 (51), 231 (18), 209 (13), 208 (21), 207 (100), 191 (14), 133 (14), 115 (11), 96 (16), 76 (7), 73 (22).…”