| Carbon position | Compound I (in CD3OD) | Compound II (in CDCl3) | ||
| δHa | δC | δHa | δC | |
| 1 |
| 130.9 |
| 130.8 |
| 2 | 7.35 (d, 1H, J = 8.8) | 128.9 | 7.03 (d, 1H, J = 1.6 Hz) | 112.9 |
| 3 | 6.78 (d, 1H, J = 8.8) | 116.6 |
| 143.6 |
| 4 |
| 140.5 |
| 143.7 |
| 5 | 6.78 (d, 1H, J = 8.8) | 116.6 | 6.85 (d, 1H, J = 8.2) | 115.5 |
| 6 | 7.35 (d, 1H, J = 8.8) | 128.9 | 6.92 (dd, 1H, J = 1.6, 8.2) | 120.2 |
| 7 | 6.96 (d, 1H, J = 15.5) | 129.6 | 6.90 (d, 1H, J = 16.5) | 128.5 |
| 8 | 6.75 (d, 1H, J = 15.5) | 126.8 | 6.76 (d, 1H, J = 16.5) | 126.4 |
| 1’ |
| 140.5 |
| 138.6 |
| 2’ | 6.48 (s, 1H) | 106.74 | 6.43 (s, 1H) | 105.9 |
| 3’ |
| 154.6 |
| 151.4 |
| 4’ |
| 110.1 |
| 109.0 |
| 5’ |
| 155.3 |
| 154.1 |
| 6’ | 6.49 (s, 1H) | 106.9 | 6.58 (s, 1H) | 107.1 |
| 4” | 6.74 (d, 1H, J = 9.9) | 120.2 | 6.61 (d, 1H, J = 9.9) | 116.3 |
| 5” | 5.54 (d, 1H, J = 9.9) | 125.6 | 5.59 (d, 1H, J = 9.9) | 129.1 |
| 6” |
| 79.8 |
| 76.0 |
| 7” | 3.52,3.62 (d each, 2H, J = 11.5) | 68.49 | 1.44 (s, 3H) | 27.8 |
| 8” | 1.35 (s, 3H) | 30.98 | 1.44 (s, 3H) | 27.8 |
| -OH |
|
| 9.78, 9.80, 10.06 |
|