Ngày tải lên :
21/02/2014, 01:21
... 3 .7 Hz, H2), 3. 58 (3H, s, CH3O), 3.52 (3H, s, CH3O), 3.29 (1H, ddd, J ¼ 9.9, 8. 8, 1.1 Hz, H4); 13C NMR (CD3OD) d: 1 68. 8, 1 47. 0, 122.1, 101 .8, 75 .7, 75 .4, 73 .7, 71 .8, 56.2, 52.4 MS (ESI) m/z 2 87 ... (1H, m) 13C NMR (CD3OD) d: 101 .7, 75 .5, 75 .4, 74 .2, 73 .8, 73 .6, 73 .5, 56.1, 53 .7, 53.5, 45 .8, 44 .8 MS (ESI) m/z 229 ([M + Na]+, 100%) Synthesis of methyl (6E )-6 ,7- dideoxy-a-D-gluco-oct-6enopyranosiduronic ... CH3O), 3.33 (1H, dd, J ¼ 9.6, 8. 8, 1.1 Hz, H4); 13C NMR (D2O, pD 7) d: 177 .2, 140.6, 133.5, 102.1, 75 .2, 75 .4, 73 .8, 73 .7, 57. 9 MS (ESI) m/z 233 ([M-H]–, 100%) Synthesis of 2¢,3¢-epoxypropyl b-D-glucopyranoside...