화합물 87 LC / MS A : 100 % 순도 , UV = 214 nm , Rt = 1 . 54 분 , ESI 438 ( M + H ) +. 1 H NMR ( 400 MHz , MeOD ) δ 8 . 59 ( d , J = 4 . 3 Hz , 1 H ) , 7 . 86 ( td , J = 7 . 7 , 1 . 7 Hz , 1 H ) , 7 . 67 ( d , J = 7 . 8 Hz , 1 H ) , 7 . 41 ? 7 . 37 ( m , 1 H ) , 7 . 25 ( d , J = 7 . 3 Hz , 1 H ) , 6 . 42 ( d , J = 7 . 3 Hz , 1 H ) , 4 . 48 ( s , 1 H ) , 3 . 66 ( d , J = 10 . 9 Hz , 1 H ) , 3 . 45 ? 3 . 38 ( m , 2 H ) , 3 . 20 ( t , J = 6 . 8 Hz , 2 H ) , 3 . 07 ( d , J = 11 . 4 Hz , 1 H ) , 2 . 76 ? 2 . 52 ( m , 6 H ) , 2 . 44 ? 2 . 36 ( m , 1 H ) , 1 . 97 ? 1 . 79 ( m , 8 H ) .