13C-NMR assignments for B1071 (2) and its metabolites
| Carbon No.3-a | 2 | 3 | 6 | 7 |
|---|---|---|---|---|
| 1 | 121.2 | 121.4 | 148.2* | 119.1 |
| 2 | 136.2* | 136.3* | 121.6 | 139.9 |
| 3 | 112.3 | 112.3 | 113.2 | 110.0 |
| 4 | 155.8* | 155.7 | 149.3* | 156.1 |
| 5 | 134.1 | 134.1* | 135.9 | 136.4 |
| 6 | 125.8 | 125.9 | 115.2 | 126.0 |
| 6 | 21.3 | 21.3 | 15.9 | 64.9 |
| 7 | 21.3 | 21.3 | 15.9 | 64.9 |
| 8 | 26.5 | 26.5 | 26.4 | 26.7 |
| 9, 10 | 22.7 | 22.8 | 22.9 | 22.7 |
| 11 | 66.2 | 66.3 | 67.2 | 66.2 |
| 2 | 58.0 | 57.3 | 58.1 | 58.4 |
| 13, 16 | 55.1 | 53.7, 53.2 | 54.7 | 54.8 |
| 14, 15 | 46.2 | 41.5, 46.3 | 45.9 | 45.9 |
| CO(Ac) | — | 168.9 | — | — |
| CH3(Ac) | — | 21.3 | — | — |
Chemical shifts in ppm (CDCl3, 62.9 MHz). Labeled assignments (*) may be interchanged.
↵3-a Numbering of carbon atoms as indicated in1.