Table 1.
1H-NMR, 13C-NMR, and HMBC data of compound 5 in CD3OD.
| 1H δ (J in Hz) | 13C | HMBC | ||||
|---|---|---|---|---|---|---|
| 5a | 5b | 5a | 5a | |||
| 2 | 5.76 d (12.0) | 5.76 d** | 82.87 d | C-1' | ||
| 3 | 4.81 * | 5.33 d (12.0) | 51.21 d | C-1', C-7'', C-9'' | ||
| 4 | 197.36 s | |||||
| 5 | 165.84 s | |||||
| 6 | 5.96 brs | 5.96 brs | 99.61 d | C-8, C-10 | ||
| 7 | 164.92 s | |||||
| 8 | 5.96 brs | 5.96 brs | 96.65 d | C-10 | ||
| 9 | 168.51 s | |||||
| 10 | 103.65 s | |||||
| 1' | 130.55 s | |||||
| 2' | 7.05 d (8.8) | 7.11 d (8.0) | 129.33 d | C-2, C-4', C-6' | ||
| 3' | 6.35 d (8.4) | 6.35 d (8.4) | 115.51 d | C-1', C-5' | ||
| 4' | 158.53 s | |||||
| 5' | 6.35 d (8.4) | 6.35 d (8.4) | 115.51 d | C-1', C-3' | ||
| 6' | 7.05 d (8.8) | 7.11 d (8.0) | 129.33 d | C-2, C-2', C-4' | ||
| 2'' | 166.28 s | |||||
| 3'' | 6.41 s | 6.52 s | 104.49 d | C-1''' | ||
| 4'' | 184.04 s | |||||
| 5'' | 162.75 s | |||||
| 6'' | 6.66 s | 6.56 s | 100.01 d | C-8'', C-10'' | ||
| 7'' | 161.62 s | |||||
| 8'' | 104.94 s | |||||
| 9'' | 156.80 s | |||||
| 10'' | 106.74 s | |||||
| 1''' | 123.09 s | |||||
| 2''' | 7.31 brs | 7.26 brs | 114.38 d | C-6''' | ||
| 3''' | 146.92 s | |||||
| 4''' | 151.35 s | |||||
| 5''' | 6.88 d (8.4) | 6.61 d (8.4) | 116.97 d | C-3''' | ||
| 6''' | 7.27 brd (8.0) | 7.10 brd** | 120.89 d | C-2'', C-2''', C-4''' | ||
| 1'''' | 5.24 d (7.6) | 5.17 d (8.0) | 101.32 d | C-7'' | ||
| 2'''' | 3.34 m | 3.34 m** | 75.24 d | |||
| 3'''' | 3.38 dd (9.2, 8.8) | 3.38 m** | 78.22 d | |||
| 4'''' | 3.82 m | 3.82 m** | 75.73 d | |||
| 5'''' | 3.60 ddd (11.2, 6.2, 2.3) | 3.60 m** | 71.36 d | |||
| 6''''a | 4.27 dd (12.0, 2.3) | 4.27 m** | 64.54 t | OCOMe | ||
| 6''''b | 4.13 dd (12.0, 6.4) | 4.13 m** | ||||
| OCOMe | 172.75 s | |||||
| Me | 1.95 s | 2.03 s | 20.77 q | OCOMe | ||
Series a and b represent major and minor conformers at 25 °C, respectively. * Overlapping with solvent signals. ** Not identified due to overlapping.