화합물 80 : 1 H NMR ( 600 MHz , DMSO - d 6 ) δ ppm 1 . 50 - 1 . 56 ( m , 1 H ) 1 . 68 - 1 . 75 ( m , 1 H ) 1 . 85 - 1 . 92 ( m , 1 H ) 1 . 96 ( ddt , J = 13 . 0 , 9 . 0 , 6 . 5 , 6 . 5 Hz , 1 H ) 2 . 25 ( dt , J = 12 . 7 , 7 . 9 Hz , 1 H ) 2 . 69 - 2 . 80 ( m , 2 H ) 3 . 76 ( br t , J = 4 . 7 Hz , 1 H ) 4 . 21 ( dd , J = 7 . 6 , 6 . 0 Hz , 1 H ) 4 . 57 ( br s , 1 H ) 4 . 72 ( br s , 1 H ) 4 . 80 ( dt , J = 10 . 5 , 7 . 9 Hz , 1 H ) 6 . 50 ( br s , 2 H ) 6 . 59 ( d , J = 3 . 5 Hz , 1 H ) 7 . 07 ( br s , 2 H ) 7 . 12 ( dd , J = 8 . 2 , 1 . 6 Hz , 1 H ) 7 . 29 ( d , J = 3 . 6 Hz , 1 H ) 7 . 34 ( s , 1 H ) 7 . 58 ( d , J = 8 . 1 Hz , 1 H ) 8 . 07 ( s , 1 H ) 8 . 31 ( s , 1 H ) .