Ngày tải lên :
02/11/2012, 11:32
... m/z (%) 4 28 (M+., C29H48O2, 37 ,8) , 413 (6,7), 227 ( 18, 5), 152 (57,9), 81 (41,2), 69 (45,4), 55 (100) H-NMR (500 MHz, CDCl3, ppm): 0,74 (3H, s, H3- 18) , 0 ,82 (3H, d, J = 7,0 Hz, H3-26), 0 ,84 (3H, ... C-5), 73,6 (d, C-3), 125,9 (d, C-4), 126,5 (d, C-2, C-6), 127 ,8 (d, C-4), 1 28, 4 (d, C-3, C-5), 1 28, 5 (d, C-3, C-5), 1 28, 6 (d, C-2, C-6), 130, 2 (d, C-2), 131,9 (d, C-1), 136,6 (s, C-1), 141,9 (s, C-1) ... (34,4), 152 (46 ,8) , 1 38 (15,1), 124 (12 ,8) , 103 (31,1), 77 (45,4), 69 (37 ,8) H-NMR (DMSO-d6): 3 ,88 (3H, s, 6-CH3), 5,93 (1H, d, J = 2,5 Hz, H-3), 6,03 (1H, d, J = 2,5 Hz, H-5), 7,42-7, 48 (3H, m, H-3,...