Table 1 1H and 13C NMR data of compounds 1 and 2 in CDCl3
From: Inhibition of IKK-β by epidioxysterols from the flowers of Calotropis gigantea (Niu jiao gua)
Position | 1 | 2 | ||
|---|---|---|---|---|
δ C | δ H (J in Hz) | δ C | δ H (J in Hz) | |
1 | 32.6 | 34.7 | ||
2 | 30.6 | 29.6 | ||
3 | 66.3 | 4.01 (m) | 66.1 | 3.86 (m) |
4 | 36.0 | 36.7 | ||
5 | 82.7 | 82.3 | ||
6 | 135.4 | 6.28 (d, 8.4) | 135.2 | 6.19 (d, 8.4) |
7 | 130.7 | 6.59 (d, 8.4) | 130.6 | 6.45 (d, 8.4) |
8 | 78.4 | 79.6 | ||
9 | 142.5 | 51.0 | ||
10 | 38.0 | 36.9 | ||
11 | 119.7 | 5.42 (dd, 6.0, 1.8) | 23.3 | |
12 | 41.2 | 39.3 | ||
13 | 43.6 | 44.5 | ||
14 | 48.2 | 51.6 | ||
15 | 20.9 | 20.5 | ||
16 | 28.6 | 28.6 | ||
17 | 55.8 | 56.1 | ||
18 | 13.0 | 0.73 (s) | 12.8 | 0.76 (brs) |
19 | 25.6 | 1.09 (s) | 18.1 | 0.83 (brs) |
20 | 39.9 | 39.7 | ||
21 | 20.7 | 1.00 (d, 6.6) | 20.8 | 0.94 (d, 6.6) |
22 | 135.1 | 5.16 (dd, 15.0, 8.4) | 135.5 | 5.09 (dd, 15.0, 8.4) |
23 | 132.4 | 5.24 (dd, 15.0, 7.8) | 132.3 | 5.17 (dd, 15.0, 7.8) |
24 | 42.8 | 42.7 | ||
25 | 33.1 | 33.0 | ||
26 | 19.9 | 0.83 (d, 6.6) | 19.6 | 0.76 (d, 6.6) |
27 | 19.6 | 0.82 (d, 7.2) | 19.9 | 0.78 (d, 6.6) |
28 | 17.6 | 0.91 (d, 7.2) | 17.5 | 0.86 (d, 6.6) |