화합물 121 LC / MS F : 95 % 순도 , UV 254 nm , Rt = 2 . 586 , ESI 359 . 2 ( M + H ) . 1 H NMR ( 400 MHz , D 2 O ) δ 7 . 46 ( d , J = 7 . 4 Hz , 1 H ) , 6 . 52 ( d , J = 7 . 3 Hz , 1 H ) , 3 . 72 ( m , 4 H ) , 3 . 52 ( bs , 2 H ) , 3 . 43 ? 3 . 35 ( m , 2 H ) , 3 . 18 ( t , J = 6 . 6 Hz , 2 H ) , 2 . 71 ( t , J = 6 . 3 Hz , 2 H ) , 2 . 63 ( t , J = 7 . 4 Hz , 2 H ) , 2 . 19 ( t , J = 3 . 1 Hz ) , 2 H ) , 1 . 91 ? 1 . 81 ( m , 4 H ) , 1 . 78 ( t , J = 3 . 4 Hz , 1 H ) .