화합물 89 LC / MS A : 100 % 순도 , UV = 214 nm , Rt = 1 . 38 분 , ESI 438 ( M + H ) +. 1 H NMR ( 500 MHz , DMSO ) δ 8 . 51 ( d , J = 5 . 3 Hz , 2 H ) , 7 . 76 ( t , J = 5 . 3 Hz , 1 H ) , 7 . 33 ( d , J = 5 . 0 Hz , 2 H ) , 7 . 05 ( d , J = 7 . 3 Hz , 1 H ) , 6 . 35 ( s , 1 H ) , 6 . 27 ( d , J = 7 . 2 Hz , 1 H ) , 3 . 52 ( s , 1 H ) , 3 . 24 ( s , 2 H ) , 3 . 03 ( dd , J = 12 . 9 , 6 . 9 Hz , 2 H ) , 2 . 81 ( d , J = 10 . 0 Hz , 2 H ) , 2 . 61 ( dd , J = 15 . 0 , 8 . 9 Hz , 2 H ) , 2 . 42 ( t , J = 7 . 6 Hz , 2 H ) , 2 . 12 ? 1 . 88 ( m , 3 H ) , 1 . 76 ? 1 . 54 ( m , 8 H ) .