Table 4.
The 1H-NMR and13CNMR parameters of episamarcandin.
| H1NMR | 13CNMR | |
|---|---|---|
| 1 | 1.44 (1H, m, H-1′a) | 161.4 (C-2) |
| 2 | 2.08 (1H, m, H-1′b) | 113.8 (C-3) |
| 3 | 1.87 (1H, m, H-2′a) | 144.4 (C-4) |
| 4 | 1.80 (1H, m, H-2′b) | 129.9 (C-5) |
| 5 | 3.56 (1H, dd, J = 11.2, 4.0 Hz, H-3′) | 113.6 (C-6) |
| 6 | 1.16 (1H, brd, J = 12.0 Hz, H-5′) | 163.4 (C-7) |
| 7 | 1.95 (1H, m, H-6′a) | 102.4 (C-8) |
| 8 | 1.74 (1H, d, J = 12.0 Hz, H-6′b) | 157.0 (C-9) |
| 9 | 1.78 (1H, ov., H-7′a) | 113.3 (C-10) |
| 10 | 2.03 (1H, m, H-7′b) | 38.8 (C-1′) |
| 11 | 1.59 (1H, d, J = 4.5 Hz, H-9′) | 28.5 (C-2′) |
| 12 | 4.08 (1H, dd, J = 14.4, 7.2 Hz, H-11′a) | 78.6 (C-3′) |
| 13 | 4.33 (1H, d, J = 9.6 Hz, H-11′b) | 40.1 (C-4′) |
| 14 | 1.49 (3H, s, H-12′) | 55.7 (C-5′) |
| 15 | 1.37 (3H, s, H-13′) | 19.3 (C-6′) |
| 16 | 1.16 (3H, s, H-14′) | 43.8 (C-7′) |
| 17 | 1.32 (3H, s, H-15′) | 71.6 (C-8′) |
| 18 | 6.34 (1H, d, J = 9.6 hz, H-3) | 59.3 (C-9′) |
| 19 | 7.69 (1H, d, J = 9.6 hz, H-4) | 38.7 (C-10′) |
| 20 | 7.45 (1H, d, J = 8.8 hz, H-5) | 68.0 (C-11′) |
| 21 | 7.05 (1H, d, J = 8.8 hz, H-6) | 32.0 (C-12′) |
| 22 | 7.12 (1H, brs, H-8) | 29.6 (C-13′) |
| 23 | 17.1 (C-14′) | |
| 24 | 17.2 (C-15′) |