1 H NMR ( CDCl 3 ) δ 8 . 49 ( 1 H , dd , J = 4 . 9 , 1 . 2 Hz ) , 7 . 42 ( 1 H , dd , J = 7 . 9 , 1 . 2 Hz ) , 7 . 39 ( 1 H , d , J = 1 . 8 Hz ) , 7 . 31 ( 1 H , d , J = 8 . 6 Hz ) , 7 . 22 ( 1 H , dd , J = 8 . 6 , 1 . 8 Hz ) , 7 . 18 ( 1 H , dd , J = 7 . 9 , 4 . 9 Hz ) , 6 . 03 ( 1 H , br ) , 4 . 74 ( 1 H , dd , J = 8 . 6 , 5 . 5 Hz ) , 4 . 51 ( 1 H , dd , J = 15 . 3 , 6 . 1 Hz ) , 4 . 46 ( 1 H , dd , J = 15 . 3 , 6 . 1 Hz ) , 3 . 72 ( 1 H , dd , J = 9 . 2 , 6 . 1 Hz ) , 2 . 38 - 2 . 26 ( 2 H , m ) , 2 . 06 ( 1 H , m ) , 1 . 78 ( 1 H , m ) . OH 로 인한 신호 는 관찰 되 지 않 았 다 .