Table 1.
1H and 13C NMR Spectroscopic Data of 12 in CDCl3.
| position | δC (100 MHz) | δH (600 MHz, J in Hz) |
|---|---|---|
| 1 | 156.41a | |
| 2 | 113.7 | |
| 3 | 159.2 | |
| 4 | 89.4 | 6.87 (1H, s) |
| 4a | 153.6 | |
| 5 | 101.6 | 6.85 (1H, s) |
| 6 | 154.9 | |
| 7 | 142.5 | |
| 8 | 137.1 | |
| 8a | 111.7 | |
| 9 | 183.5 | |
| 9a | 104.5 | |
| 10a | 156.38a | |
| 1' | 100.4 | 6.80 (1H, s) |
| 2' | 156.15a | |
| 3' | 132.3 | |
| 4' | 113.1 | 5.72 and 5.16 (each 1H, s) |
| 5' | 19.2 | 2.10 (3H, s) |
| 1′′ | 26.6 | 4.09 (2H, d, 5.8) |
| 2′′ | 123.0 | 5.28 (1H, m) |
| 3′′ | 132.3 | |
| 4′′ | 25.8 | 1.83 (3H, s) |
| 5′′ | 18.2 | 1.69 (3H, s) |
| 1-OH | 14.10 (1H, s) | |
| 7-OCH3 | 62.1 | 3.79 (3H, s) |
aThese may be exchanged.