화합물 35 LC / MS C : 98 % 순도 , UV = 214 nm , Rt = 1 . 378 분 , ESI 389 . 1 ( M + H ) +. 1 H NMR ( 400 MHz , DMSO - d 6 ) δ 8 . 18 ( 0 . 37 H , HCOOH ) , 7 . 89 - 7 . 86 ( m , 1 H ) , 7 . 07 ( d , J = 7 . 2 Hz , 1 H ) , 6 . 87 ( s , 1 H ) , 6 . 27 ( d , J = 7 . 2 Hz , 1 H ) , 4 . 01 - 3 . 97 ( m , 1 H ) , 3 . 85 - 3 . 80 ( m , 1 H ) , 3 . 32 - 3 . 29 ( m , 2 H ) , 3 . 27 - 3 . 20 ( m , 2 H ) , 3 . 08 - 3 . 03 ( m , 2 H ) , 2 . 64 - 2 . 59 ( m , 3 H ) , 2 . 46 - 2 . 38 ( m , 2 H ) , 2 . 38 - 2 . 31 ( m , 2 H ) , 1 . 91 - 1 . 87 ( m , 1 H ) , 1 . 80 - 1 . 73 ( m , 3 H ) , 1 . 58 - 1 . 53 ? ?( m , 2 H ) , 1 . 43 - 1 . 37 ( m , 2 H ) .