화합물 88 LC / MS A : 100 % 순도 , UV = 214 nm , Rt = 1 . 48 분 , ESI 438 ( M + H ) +. 1 H NMR ( 500 MHz , MeOD ) δ 8 . 72 ( s , 1 H ) , 8 . 57 ( d , J = 4 . 2 Hz , 1 H ) , 8 . 07 ( d , J = 8 . 0 Hz , 1 H ) , 7 . 50 ( dd , J = 7 . 8 , 4 . 9 Hz , 1 H ) , 7 . 27 ( d , J = 7 . 3 Hz , 1 H ) , 6 . 45 ( d , J = 7 . 3 Hz , 1 H ) , 4 . 34 ( s , 1 H ) , 3 . 63 ( s , 1 H ) , 3 . 44 ? 3 . 37 ( m , 2 H ) , 3 . 22 ( t , J = 6 . 8 Hz , 2 H ) , 3 . 02 ( d , J = 11 . 6 Hz , 1 H ) , 2 . 74 ( t , J = 6 . 2 Hz , 3 H ) , 2 . 64 ? 2 . 48 ( m , 3 H ) , 2 . 39 ( dd , J = 12 . 8 , 8 . 5 Hz , 1 H ) , 2 . 04 ? 1 . 79 ( m , 8 H ) .