Table 2.
The NMR spectroscopic data of compounds 3 and 4 (MeOH-d4, 1H-NMR 600 MHz, 13C-NMR 150 MHz).
| Position | 3 | 4 | ||
|---|---|---|---|---|
| δH (J in Hz) | δ C | δH (J in Hz) | δ C | |
| 1 | - | 211.9 | - | 211.2 |
| 2 | - | 51.2 | - | 52.8 |
| 3 | 2.80 (d, J = 17.0) | 38.5 | 4.84 (s) | 86.0 |
| 3.50 (d, J = 17.0) | ||||
| 4 | 7.22 (s) | 126.9 | 7.52 (s) | 127.8 |
| 5 | - | 146.4 | - | 146.2 |
| 6 | - | 132.5 | - | 140.7 |
| 7 | - | 136.2 | - | 139.1 |
| 8 | - | 130.1 | - | 131.4 |
| 9 | - | 153.9 | - | 152.7 |
| 10 | 4.10 (d, J = 9.4) | 74.86 | 1.08 (s) | 22.3 |
| 3.48 (d, J = 9.4) | ||||
| 11 | 1.14 (s) | 21.8 | 1.28 (s) | 22.8 |
| 12 | 2.35 (s) | 19.9 | 2.57 (s) | 22.0 |
| 13 | 2.74 (t, J = 5.5) | 27.2 | 5.32 (dd, J = 4.9, 8.4) | 72.7 |
| 14 | 3.98 (m) | 65.7 | 3.92 (dd, J = 8.4, 11.5) | 65.5 |
| 3.63 (dd, J = 4.9,11.5) | ||||
| 15 | 5.08 (d, J = 4.8) | 67.5 | 2.74 (s) | 15.2 |
| glc-1 | 4.20 (d, J = 7.9) | 104.7 | 4.57 (d, J = 7.8) | 105.8 |
| glc-2 | 3.21 (m) | 71.5 | 3.36 (m) | 71.7 |
| glc-3 | 3.20 (m) | 77.9 | 3.42 (m) | 78.0 |
| glc-4 | 3.03 (m) | 74.9 | 3.28 (m) | 75.3 |
| glc-5 | 3.28 (m) | 78.1 | 3.27 (m) | 78.2 |
| glc-6 | 3.78 (dd, J = 1.6, 11.8) | 62.8 | 3.85 (dd, J = 2.0, 12.0) | 62.8 |
| 3.61 (dd, J = 5.7, 11.8) | 3.75 (dd, J = 5.4, 12.0) | |||