1 H NMR ( 400 MHz , 메탄올 - d 4 ) δ 8 . 75 ( d , J = 2 . 2 Hz , 1 H ) , 8 . 70 ( d , J = 2 . 2 Hz , 1 H ) , 8 . 57 ( s , 1 H ) , 7 . 99 ( d , J = 5 . 1 Hz , 1 H ) , 7 . 77 ( s , 1 H ) , 7 . 21 ( d , J = 5 . 1 Hz , 1 H ) , 4 . 43 ( ddd , J = 49 . 1 , 9 . 4 , 2 . 1 Hz , 1 H ) , 4 . 07 ( p , J = 7 . 8 Hz , 1 H ) , 4 . 02 - 3 . 83 ( m , 1 H ) , 3 . 58 - 3 . 40 ( m , 1 H ) , 3 . 19 - 3 . 05 ( m , 2 H ) , 2 . 69 ( s , 3 H ) , 2 . 19 ( q , J = 9 . 3 Hz , 2 H ) , 1 . 29 ( d , J = 1 . 6 Hz , 6 H ) . ( 1 H 는 용매 에 의해 가려짐 )