Table 2.
1H- and 13C-NMR data of compounds 3 and 4 a.
| No. | 3 | 4 | ||
|---|---|---|---|---|
| 1H | 13C | 1H | 13C | |
| 1 | 3.87 brs | 61.67 t | 4.35 dd (11.5, 6.0) 4.46 dd (11.5, 4.5) |
67.38 t |
| 2 | 5.20 m | 78.01 d | 4.03 m | 70.73 d |
| 3 | 3.87 brs | 61.67 t | 3.66 d (5.4) | 64.28 t |
| 4 | 172.06 s | 172.43 s | ||
| 5 | 106.06 s | 105.68 s | ||
| 6 | 166.16 s | 166.29 s | ||
| 7 | 6.23 d (2.5) | 101.68 d | 6.25 d (2.5) | 101.73 d |
| 8 | 163.26 s | 163.35 s | ||
| 9 | 6.28 d (2.5) | 112.32 d | 6.29 d (2.5) | 112.37 d |
| 10 | 144.68 s | 144.93 s | ||
| 11 | 2.51 s | 24.36 q | 2.51 s | 24.45 q |
a
Measured in acetone-d6 at 500 MHz for 1H and 125 MHz for 13C with reference to the solvent signals, δ in ppm and J in Hz.