Table 3.
1H and 13C NMR Data for Compounds 4 and 5 (CDCl3)
| 4 | 5 | |||
|---|---|---|---|---|
| Position | δh (mult; J in Hz) | δC | δh (mult; J in Hz) | δC |
| 1 | --- | 192.2 | -- | 204.3 |
| 2 | 6.92 (d; 15) | 121.8 | 2.96 (t; 7.4) | 37.9 |
| 3 | 7.45 (dd; 15, 10) | 144.5 | 2.39 (m) | 27.3 |
| 4 | 6.31 (m) | 130.6a | 5.49 (dtq; 15,5.4, 1.1) | 130.3 |
| 5 | 6.28 (dq; 15,6.1) | 141.2 | 5.47 (dqt; 15,5.9, 1.1) | 126.2 |
| 6 | 1.90 (d; 6.1) | 15.7 | 1.64 (ddt; 5.9, 1.1, 1.1) | 17.9 |
| 2′(OH) | 13.40 (s) | 161.2 | 12.91 (s) | 163.7 |
| 3′ | 6.39 (s) | 99.1 | 6.42 (s) | 99.6 |
| 4′ | -- | 165.2 | -- | 165.3 |
| 5′ | -- | 113.0 | -- | 120.8 |
| 6′ | 7.49 (br s) | 130.5a | 7.64 (s) | 129.3 |
| 7′ | 2. 13 (d; 0.5) | 18.9 | 4.61 (br s);2.02 (br s; OH) | 61.1 |
| 8′ | 3.84 (s) | 55.7 | 3.87 (s) | 55.8 |
a
These assignments may be interchanged.