화합물 115 LC / MS F : 97 % 순도 , UV 254 nm , Rt = 1 . 896 , ESI 375 . 2 ( M + H ) . 1 H NMR ( 400 MHz , DMSO - d 6 ) δ 7 . 8 ? 7 . 75 ( m , 1 H ) , 7 . 03 ( d , J = 7 . 2 Hz , 1 H ) , 6 . 34 ( bs , 1 H ) , 6 . 26 ( d , 1 H ) , 3 . 27 - 3 . 21 ( m , 3 H ) , 3 . 11 - 2 . 99 ( m , 4 H ) , 2 . 62 - 2 . 53 ( m , 3 H ) , 2 . 41 ( m , 2 H ) , 2 . 16 ( m , 3 H ) , 1 . 78 - 1 . 59 ( m , 8 H ) , 1 . 21 ( d , J = 7 . 2 Hz , 3 H )