Table 2.
1H and 13C-NMR spectral data for compounds 3 and 4 from Corymbia torelliana.
| Position | Compound 3 (d6 DMSO) | Compound 4 (CD3OD) | ||||
|---|---|---|---|---|---|---|
| 13C | 1H | HMBC | 13C | 1H | HMBC | |
| 2 | 78.4 (CH) | 5.43 (dd, 12.9, 2.9) | 3,4,1',2' | 83.7 (CH) | 5.01 (d, 11.4) | 3,4,1',2' |
| 3 | 41.9 (CH2) | A 3.25 (dd, 17.2, 12.9) | 2,4,1' | 72.3 (CH) | 4.57 (d, 11.4) | 2,4,1' |
| B 2.68 (dd, 17.2, 2.9) | 2,1' | |||||
| 4 | 196.8 (C) | 197.6 (C) | ||||
| 4a | 101.7 (C) | 101.2 (C) | ||||
| 5 | 162.9 (C) | 163.7 (C) | ||||
| 5-OH | 12.13 (br s) | 4a,5,6 | ||||
| 6 | 95.8 (CH) | 5.85 (br s) | 5,7,8,8a | 94.6 (CH) | 6.08 (d. 2.4) | 5,7,8,4a |
| 6-Me | ||||||
| 7 | 166.7 (C) | 168.4 (C) | ||||
| 7-Me | 54.9 (CH3) | 3.8 | 7 | |||
| 8 | 94.9 (CH) | 5.85 (br s) | 5,7,8,8a | 93.6 (CH) | 6.04 (d, 2.4) | 4a,6,7,8a |
| 8a | 163.4 (C) | 163.0 (C) | ||||
| 1' | 128.8 (C) | 127.7 (C) | ||||
| 2' | ||||||
| 3' | ||||||
| 4' | 157.6 (C) | 157.8 (C) | ||||
| 5' | 6.8 | |||||
| 6' | 7.35 | |||||
| 2'/6' | 128.3 (CH) | 7.31 (d, 8.5) | 2,1',3'/5',4' | 128.4 (CH) | 7.35 (d, 8.4) | 2,3',4' |
| 3'/5' | 115.1 (CH) | 6.79 (d,8.5) | 1',2'/6',4' | 114.7 (CH) | 6.80 (d, 8.4) | 1',2',4' |