| 1,7-Dihydroxy-3-methylxanthone (CDCl3-CD3OD) | ||
|---|---|---|
| Position | δC | δH (J in Hz) |
| 1 | 161.7 | - |
| 2 | 111.1 | 6.57 (br s) (1H) |
| 3 | 149.5 | - |
| 3–CH3 | 22.6 | 2.42 (s) (3H) |
| 4 | 108.1 | 6.75 (br s) (1H) |
| 4a | 157.1 | - |
| 5 | 119.6 | 7.37 (d, 9.0) (1H) |
| 6 | 125.5 | 7.29 (dd, 9.0, 2.5) (1H) |
| 7 | 154.5 | 6.70 (d, 9.0) (1H) |
| 8 | 109.0 | 7.52 (d, 2.5) (1H) |
| 8a | 121.6 | - |
| 9 | 182.5 | - |
| 9a | 107.1 | - |
| 10a | 150.8 | - |
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