Table 11.
1H and 13C NMR spectral data for compound 21
| Position | 21
|
|
|---|---|---|
| δH | δC | |
| 2 | 7.1, br d | 131.4, d |
| 3 | 6.8, br d | 100.8, d |
| 3a | 148.9, s | |
| 5 | 7.8, d(7.6) | 147.1, d |
| 6 | 7.4, br d | 115.0, d |
| 6a | 136.4, s | |
| 7 | 6.8, s | 100.6, d |
| 8 | 157.1, s | |
| 9 | 129.2, s | |
| 9a | 123.8, s | |
| 9b | 117.7, s | |
| NCH3 | 3.9, s | 45.5, q |
| OCH3 | 3.9, s | 56.9, q |
| 1′ | 164.8, s | |
| 2′ | 134.8, s | |
| 3′ | 7.7, s | 113.4, d |
| 4′ | 159.9, s | |
| 5′ | 7.1, br d | 120.7, d |
| 6′ | 7.5, t(8.4) | 130.1, d |
| 7′ | 7.5, br d | 122.8, d |
| 8′ | 3.9, s | 55.6, q |
Measured in CDCl3 at 400 MHz for 1H and 100 MHz for 13C, respectively. J values in Hz.