이론 적 수율 58 % ; 광학 순도 98 . 9 % ( HPLC ) ; 1 H NMR ( 300 MHz , DMSO - d 6 ) δ 8 . 85 ( d , 1 H , J = 4 . 5 Hz ) , 8 . 28 ( d , 1 H , J = 8 . 1 Hz ) , 8 . 02 ( dd , 1 H , J = 8 . 1 Hz , 1 . 2 Hz ) , 7 . 24 - 7 . 76 ( m , 8 H ) , 6 . 74 ( d , 1 H , J = 5 . 1 Hz ) , 6 . 01 - 6 . 13 ( m , 1 H ) , 5 . 58 ( d , 1 H , J = 5 . 1 hz ) , 5 . 14 ( d , 1 H , J = 9 . 3 Hz ) , 5 . 09 ( s , 1 H ) , 4 . 64 ( s , 1 H ) , 3 . 56 - 3 . 73 ( m , 2 H ) , 3 . 25 - 3 . 32 ( m , 2 H ) , 2 . 66 - 2 . 90 ( m , 7 H ) , 2 . 28 - 2 . 34 ( m , 1 H ) , 1 . 95 - 2 . 03 ( m , 1 H ) , 1 . 75 ( brs , 1 H ) , 1 . 50 - 1 . 58 ( m , 2 H ) , 1 . 32 - 1 . 36 ( m , 1 H )