[ α ] D 27 + 24 . 0 ° ( c = 1 . 0 , MeOH ) ; mp 159 ℃; IR ( KBr ) ν max 3525 , 3179 , 2933 , 2456 , 1760 , 1455 , 1431 , 1271 , 1219 , 1043 cm - 1 ; 1 H NMR ( 400 MHz , CD 3 OD ) δ 7 . 18 ( d , J = 8 . 4 Hz , 1 H ) , 7 . 03 ( d , J = 2 . 4 Hz , 1 H ) , 6 . 95 ( dd , J = 8 . 4 , 2 . 4 Hz , 1 H ) , 5 . 75 및 5 . 72 ( AB q , J = 6 . 8 Hz , 2 H ) , 4 . 89 - 4 . 82 ( m , 1 H ) , 4 . 39 ( s , 2 H ) , 3 . 70 - 3 . 68 ( m , 1 H ) , 3 . 25 ( d , J = 6 . 0 Hz , 1 H ) , 3 . 11 ( dd , J = 13 . 6 , 4 . 0 Hz , 1 H ) , 2 . 99 ( br d , J = 18 . 8 Hz , 1 H ) , 2 . 74 - 2 . 66 ( m , 1 H ) , 2 . 45 ( d , J = 14 . 4 Hz , 1 H ) , 1 . 96 ( d , J = 11 . 6 Hz , 1 H ) , 1 . 88 - 1 . 80 ( m , 1 H ) , 1 . 70 ( d , J = 12 . 8 Hz , 1 H ) , 1 . 59 - 1 . 42 ( m , 5 H ) , 1 . 34 - 1 . 28 ( m , 1 H ) , 1 . 26 ( d , J = 6 . 4 Hz , 6 H ) , 1 . 14 - 1 . 04 ( m , 1 H ) ; 13 C NMR ( 400 MHz , CD 3 OD ) δ 176 . 1 , 156 . 5 , 153 . 9 , 139 . 5 , 129 . 4 , 128 . 9 , 114 . 8 , 113 . 5 , 88 . 4 , 73 . 1 , 72 . 5 , 51 . 3 , 41 . 2 , 38 . 4 , 37 . 6 , 36 . 6 , 35 . 5 , 27 . 7 , 25 . 9 , 25 . 6 , 21 . 7 , 20 . 7 ; HR - FAB - MS m / z : 360 . 2173 [ M + H ] + ( Calcd for C 21 H 30 NO 4 : 360 . 2175 ) .