화합물 61 LC / MS A : 100 % 순도 , UV = 214 nm , Rt = 1 . 49 분 , ESI 365 . 2 ( M + H ) +. 1 H NMR ( 500 MHz , 메탄올 - d 4 ) δ 7 . 20 ( d , J = 7 . 3 Hz , 1 H ) , 6 . 41 ( d , J = 7 . 2 Hz , 1 H ) , 3 . 92 ( dd , J = 20 . 0 , 10 . 4 Hz , 2 H ) , 3 . 76 ( dd , J = 20 . 6 , 10 . 3 Hz , 2 H ) , 3 . 44 ? 3 . 38 ( m , 2 H ) , 3 . 36 ? 3 . 28 ( m , 4 H ) , 2 . 73 ( t , J = 6 . 3 Hz , 2 H ) , 2 . 57 ( t , J = 7 . 6 Hz , 2 H ) , 1 . 92 ? 1 . 85 ( m , 2 H ) , 1 . 71 ? 1 . 55 ( m , 4 H ) .