Table 3.
1H and 13C-NMR spectral data for compounds 5–7 from Corymbia torelliana.
| Position | Compound 5 (d6 DMSO) | Compound 6 (CD3OD) | Compound 7 (CDCl3) | ||||||
|---|---|---|---|---|---|---|---|---|---|
| 13C | 1H | HMBC | 13C | 1H | HMBC | 13C | 1H | HMBC | |
| 2 | 77.9 (CH) | 5.32 (dd,12.4,2.8) | 3,4,1',2' | 78.6 (CH) | 5.30 (dd, 12.9, 3.0) | 1',2' | 79.0 (CH) | 5.34 (dd, 13.0, 3.0) | 3,4,1',2' |
| 3 | 42.0 (CH2) | A 3.12(dd,17.0,12.4) B 2.60 (dd,17.0,2.8) |
2,4,1' 2,1' |
42.7(CH2) | A 3.05 (dd,16.8, 12.9) B 2.71 (dd, 16.8, 3.0) |
2,4,1' 4 |
43.2 ( CH2) | A 3.08 (dd,17.3, 13.0) B 2.78 (dd, 17.3, 3.0) |
2,4,1' 2,1' |
| 4 | 194.3 (C) | 196.7 (C) | 196.2 (C) | ||||||
| 4a | 100.6 (C) | 102.8 (C) | 103.9 (C) | ||||||
| 5 | 160.4 (C) | 157.9 (C) | 164.5 (C) | ||||||
| 5-OH | 12.47 (br s) | 4a,5,6 | |||||||
| 6 | 103.3 (C) | 103.5 (C) | 95.1 (CH) | 6.06 (d, 2.4) | 4a,5,7,8 | ||||
| 6-Me | 7.1 (CH3) | 1.83 (s) | 5,6,7 | 6.8 (CH3) | 1.99 (s) | 5,6,7 | |||
| 7 | 168.8 (C) | 163.6 | 168.1 (C) | ||||||
| 7-Me | 55.7 (CH3) | 3.79 (s) | 7 | ||||||
| 8 | 94.9 (CH) | 5.82 (s) | 6,7,8a | 101.6 (C) | 94.2 (CH) | 6.03 (d, 2.4) | 6,7,8a | ||
| 8-Me | 6.0 (CH3) | 1.98 (s) | 7,8,8a | ||||||
| 8a | 160.2 (C) | 158.8 (C) | 163.2 (C) | ||||||
| 1' | 129.2 (C) | 130.2 (C) | 127.7(C) | ||||||
| 2''/6'' | 128.0 (CH) | 7.29 (d, 8.3) | 2,1',3'/5',4' | 127.4 (CH) | 7.32 (d, 8.4) | 2,3',4' | 127.9 (CH) | 7.31 (d, 8.6) | 2,1',3'/5',4' |
| 3''/5' | 115.0 (CH) | 6.77 (d, 8.3) | 1',2'/6',4' | 114.9 (CH) | 6.81 (d, 8.4) | 1',2',4' | 115.7 (CH) | 6.88 (d, 8.6) | 1',2'/6',4' |
| 4' | 157.5 (C) | 157.4 (C) | 156.5 (C) | ||||||