Ngày tải lên :
28/07/2015, 18:15
... 12,5) δCppm 37 ,11 Hβ:1,82(dd; 13, 5; 4,0) 3, 94(ddd; 8,8,7; 8 ,3; 3, 3) 68 ,32 3, 84(dt; 7,5; 4,0) 68,40 4,01(q; 3, 0 Hz) 70, 13 3,97 (q; 2,5 ) 68,16 Hα: 2,07(dd; 15,0; 3, 0) 36 , 13 1,74(dd; 8,5; 3) 32 ,52 Hβ: ... 8,0; 12,5) 28,94 33 ,94 Hα: 2, 53( m) 33 ,89 Hβ: 2 ,3( o) 16 Hα: 2 ,37 (o) Hβ: 2,51(m) 17 Hβ: 2 ,38 (m) 219,97 220,21 18 0,89 (s) 17,58 0,89(s) 17,62 19 0,96 (s) 17, 13 1,00(s) 24,54 32 3. 2 .3. 3 Cấu trúc chất ... 24 ,39 0,91(s) 16, 93 78,41 3, 35(t) 78,41 1,21(s) 21, 03 20 21 1,22(s) 21,05 22 3, 33( dd, 11,0; 1,7) 77,92 23 Hα:1,68(o) Hβ:1 ,31 (qd; 13, 0; 4,0) 27 ,34 Hα: 1,44 (td; 12,5; 4,0) Hβ: 1,82 ( o) 42 ,36 ...