Table 1.
1H- and 13C-NMR spectral data (CD3OD) for leufolins A (1) and B (2).
| 1 | 2 | |||
|---|---|---|---|---|
| C/H | δ H | δ C | δ H | δ C |
| 1 | - | - | ||
| 2 | 5.28 (1H, dd, 12.3, 2.7) | 80.3 | 164.9 | |
| 3 | 3.12 (1H, dd, 17.1, 12.3) 2.71 (1H, dd, 17.1, 2.7) |
44.0 | 6.89 (1H, s) | 104.7 |
| 4 | 198.4 | 182.8 | ||
| 5 | 164.9 | 6.90 (1H, d, 1.8) | 114.7 | |
| 6 | 6.21 (1H, d, 1.8) | 97.9 | - | 162.6 |
| 7 | 166.8 | 6.81 (1H, d, 1.8) | 101.6 | |
| 8 | 6.16 (1H, d, 1.9) | 97.1 | 150.0 | |
| 9 | 158.9 | 144.6 | ||
| 10 | 104.9 | 115.2 | ||
| 1' | 130.8 | 122.0 | ||
| 2' | 7.26 (1H, d, 8.5) | 128.9 | 7.07 (1H, d, 9.7) | 123.1 |
| 3' | 6.69 (1H, d, 8.5) | 115.7 | 7.25 (1H, d, 9.7) | 116.7 |
| 4' | 164.3 | 163.8 | ||
| 5' | 6.69 (1H, d, 8.5) | 115.7 | 7.25 (1H, d, 9.7) | 116.7 |
| 6' | 7.26 (1H, d, 8.5) | 128.9 | 7.07 (1H, d, 9.7) | 123.1 |
| 1'' | 4.97 (1H, d, 7.0) | 101.1 | 5.78 (1H, d, 7.3) | 101.7 |
| 2'' | 3.33 (1H, m) | 74.5 | 3.66 (1H, m) | 74.6 |
| 3'' | 3.45 (1H, m) | 77.8 | 3.94 (1H, m) | 78.3 |
| 4'' | 3.39 (1H, m) | 71.8 | 4.15 (1H, m) | 71.8 |
| 5'' | 3.75 (1H, t, 7.7) | 75.6 | 4.17 (1H, m) | 75.7 |
| 6'' | 4.55 (1H, d, 11.7) 4.28 (1H, dd, 11.7, 7.2) |
64.6 | 4.85-4.89 (2H, m) | 64.8 |
| 1''' | 127.2 | 134.0 | ||
| 2''' | 7.37 (1H, d, 8.5) | 131.2 | 7.45 (1H, d, 8.4) | 130.6 |
| 3''' | 6.77 (1H, d, 8.5) | 116.4 | 7.23 (1H, d, 8.4) | 116.9 |
| 4''' | - | 161.1 | 162.8 | |
| 5''' | 6.77 (1H, d, 8.5) | 116.4 | 7.23 (1H, d, 8.4) | 116.9 |
| 6''' | 7.37 (1H, d, 8.5) | 131.2 | 7.45 (1H, d, 8.4) | 130.6 |
| 7''' | 7.59 (1H, d, 15.8) | 146.8 | 6.75 (1H, d, 12.9) | 144.6 |
| 8''' | 6.33 (1H, d, 15.8) | 114.9 | 6.09 (1H, d, 12.9) | 115.6 |
| 9''' | 169.0 | 166.6 | ||