Table 1.
13C-NMR chemical shifts of the triterpenoids from Euphorbia macrostegia.
| C | 1 | 2 | 3 | 4 | C | 1 | 2 | 3 | 4 |
|---|---|---|---|---|---|---|---|---|---|
| 1 | 31.9 | 32.0 | 32.0 | 32.0 | 16 | 26.5 | 26.4 | 26.4 | 26.5 |
| 2 | 30.4 | 30.4 | 30.4 | 30.4 | 17 | 52.2 | 52.0 | 52.1 | 52.3 |
| 3 | 78.9 | 78.8 | 78.8 | 78.9 | 18 | 18.0 | 19.3 | 18.1 | 18.1 |
| 4 | 40.5 | 40.5 | 40.5 | 40.5 | 19 | 29.9 | 30.1 | 29.9 | 29.9 |
| 5 | 47.1 | 47.7 | 47.1 | 47.1 | 20 | 35.9 | 36.4 | 36.3 | 36.4 |
| 6 | 21.1 | 21.1 | 21.1 | 21.1 | 21 | 18.3 | 18.3 | 18.4 | 18.3 |
| 7 | 28.1 | 28.1 | 28.1 | 28.2 | 22 | 32.0 | 39.1 | 39.4 | 35.0 |
| 8 | 48.0 | 48.0 | 48.0 | 48.0 | 23 | 31.5 | 125.6 | 130.8 | 31.3 |
| 9 | 20.1 | 20.0 | 20.0 | 20.0 | 24 | 76.7 | 139.3 | 134.4 | 156.9 |
| 10 | 26.1 | 26.1 | 26.0 | 25.8 | 25 | 128.8 | 70.8 | 68.2 | 33.8 |
| 11 | 26.0 | 26.0 | 26.0 | 26.0 | 26 | 11.4 | 29.9 | 24.4 | 22.0 |
| 12 | 32.9 | 32.8 | 32.8 | 32.9 | 27 | 17.2 | 29.9 | 24.3 | 21.9 |
| 13 | 45.3 | 45.3 | 45.3 | 45.3 | 28 | 19.3 | 19.3 | 19.3 | 19.3 |
| 14 | 48.7 | 48.8 | 48.8 | 48.8 | 29 | 14.0 | 14.0 | 14.0 | 14.0 |
| 15 | 35.6 | 35.6 | 35.6 | 35.9 | 30 | 25.4 | 25.5 | 25.4 | 25.5 |