Table 2.
Proton NMR spectroscopy of T-2 toxin 3-glucoside (Fig. 6)
Positiona | 1H shift(s) (ppm) | Mult, splitting (Hz) |
---|---|---|
1 | ||
2 | 3.83 | d, 4.7 |
3 | 4.34 | dd, 3.2, 4.7 |
4 | 5.85 | d, 3.2 |
5 | ||
6 | ||
7ab | 2.38, 2.00 | dd, 15.1, 5.8; d, 15.1 |
8 | 5.34 | d, 5.6 |
9 | ||
10 | 5.78 | d, 5.9 |
11 | 4.46 | d, 5.9 |
12 | ||
13ab | 3.05, 2.88 | d, 3.8; d, 3.8 |
14 | 0.76 | S |
15ab | 4.38, 4.13 | d, 12.4; d, 12.4 |
16 | 1.75 | S |
17 | ||
18ab | 2.16, 2.16 | M |
19 | 2.07 | M |
20 | 0.98 | d, 6.6 |
21 | 0.97 | d, 6.6 |
22 | ||
23* | 2.10 | S |
24 | ||
25* | 2.05 | S |
26 | 4.98 | d, 3.8 |
27 | 3.44 | dd, 9.8, 3.8 |
28 | 3.72 | t, 9.8 |
29 | 3.37 | t, 9.5 |
30 | 3.59 | ddd, 9.9, 4.8, 2.4 |
31ab | 3.78, 3.70 | dd, 11.9, 2.4; dd, 11.9, 4.9 |
* indicates that shifts for positions 23 and 25 may be reversed.