Table 1.
1H-NMR and 13C-NMR spectroscopic data of compounds 6 and 7.
| No. | 6 | 7 | ||
|---|---|---|---|---|
| δH (J in Hz) | δC | δH (J in Hz) | δC | |
| 1 | - | - | - | - |
| 2 | - | 167.3 | - | 166.7 |
| 3 | 4.14, t (4.7) | 59.8 | 4.38, td (4.7, 2.0) | 57.7 |
| 4 | - | - | - | - |
| 5 | - | 171.1 | - | 170.7 |
| 6 | 2.82, m | 59.3 | 4.07, ddd (10.9, 6.3, 2.0) | 60.0 |
| 7 | 1.70, m | 29.9 | 1.25, m | 29.5 |
| 2.12, m | 2.13, m | |||
| 8 | 1.95, m 1.70, m |
22.5 | 1.84, m | 22.6 |
| 9 | 3.36, m | 46.2 | 3.38, m | 45.9 |
| 3.56, m | 3.57, m | |||
| 10 | 2.88, dd (13.9, 4.9) | 39.7 | 2.99, dd (14.2, 4.7) | 37.1 |
| 3.09, dd (13.9, 4.9) | 3.13, dd (14.2, 4.7) | |||
| 11 | - | 128.9 | - | 129.6 |
| 12 | 6.98, dd (8.2, 2.1) | 131.3 | 7.03, dd (8.3, 2.2) | 131.4 |
| 13 | 6.83, d (8.2) | 117.2 | 6.81, d (8.3) | 116.9 |
| 14 | - | 110.8 | - | 110.6 |
| 15 | - | 155.0 | - | 154.5 |
| 16 | 7.29, d (2.1) | 135.5 | 7.35, d (2.2) | 135.4 |