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Comparision of the coupling constants between H-2 and H-3 of 11 and 15 in acetone-d6 with those of other obtained taxoids
| Compound | J2–3 (Hz) | Compounds | J2–3 (Hz) |
|---|---|---|---|
| 1 | 9.0 | 13 | 8.2 |
| 2 | br d | 14 | 8.4 |
| 3 | 9.2 | 15 | 7.1 |
| 4 | 8.6 | 16 | br s |
| 5 | br s | 17 | 9.5 |
| 6 | 8.7 | 18 | s |
| 7 | s | 19 | 8.2 |
| 8 | 9.1 | 20 | br s |
| 9 | br s | 21 | s |
| 10 | br s | 22 | s |
| 11 | 7.6 | 23 | s |
| 12 | 8.1 |
