1 H 　 NMR ( DMSO - d 6 , 400 MHz ) δ 10 . 49 ( s , 1 H ) , 9 . 73 ( s , 1 H ) , 9 . 21 ( s , 1 H ) , 7 . 87 ( d , J = 8 Hz , 2 H ) , 7 . 71 ( s , 1 H ) , 7 . 29 ( d , J = 8 Hz , 2 H ) , 6 . 86 ( d , J = 4 Hz , 1 H ) , 6 . 77 ( dJ = 4 Hz , 1 H ) , 3 . 93 ( s , 3 H ) , 3 . 82 ( s , 3 H ) , 3 . 34 ( s , 3 H ) , 3 . 20 - 3 . 17 ( m , 2 H ) , 2 . 64 - 2 . 55 ( m , 3 H ) , 1 . 87 - 1 . 74 ( m , 4 H ) ( 화합물 37 ) ;