화합물 158 - E 2 LC / MS ESI 478 ( M + H ) + 1 H NMR ( 400 MHz , MeOD ) δ 8 . 01 ( d , J = 8 . 0 Hz , 1 H ) , 7 . 76 ( d , J = 7 . 6 Hz , 1 H ) , 7 . 67 ( t , J = 7 . 2 Hz , 1 H ) , 7 . 54 ( t , J = 7 . 6 Hz , 1 H ) , 7 . 19 ( d , J = 7 . 2 Hz , 1 H ) , 6 . 40 ( d , J = 7 . 2 Hz , 1 H ) , 4 . 73 ( s , 1 H ) , 4 . 13 ( s , 1 H ) , 3 . 49 - 2 . 85 ( m , 8 H ) , 2 . 73 ? 2 . 55 ( m , 4 H ) , 2 . 16 ? 1 . 56 ( m , 8 H ) .