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1H and 13C NMR data of 5 (in pyridine-d 5, at 600 and 150 MHz, resp.) [δ in ppm, J in Hz]
| Position | δ H | δ C | Position | δ H | δ C |
|---|---|---|---|---|---|
| 1 | – | 169.7 s | 8 | – | 159.0 s |
| 3 | 5.46 q (6.7) | 79.2 d | 8a | – | 107.5 s |
| 4 | – | 72.6 s | 9 | 1.57 d (6.7, 3H) | 15.3 q |
| 4a | – | 142.0 s | 10 | 4.35 d (11.3) | 67.3 t |
| 5 | 7.65 d (7.6) | 116.6 d | 4.10 d (11.3) | ||
| 6 | 8.19 d (7.6) | 134.6 d | 11 | 5.17 s (2H) | 58.7 t |
| 7 | – | 131.0 s |
