Table 1.
NMR data for sapnol A (1) [600 MHz (1H) and 150 MHz (13C) in pyridine-d5].
| Position | δC | δH (mult, J in Hz) | Position | δC | δH (mult, J in Hz) |
|---|---|---|---|---|---|
| 1 | 74.8 | 5.73 (d, 5.8) | 1′′ | 131.7 | - |
| 2 | 57.4 | 3.63 (ddd, 6.6, 6.3, 5.8) | 2′′ | 108.6 | 7.03 (br. s) |
| 3 | 64.5 | 4.37 (dd, 10.6, 6.6) 4.58 (dd, 10.6, 6.3) |
3′′ 4′′ |
148.7 136.3 |
- - |
| 1′ | 137.0 | - | 5′′ | 148.7 | - |
| 2′ | 111.7 | 7.31 (br. s) | 6′′ | 108.6 | 7.03 (br. s) |
| 3′ | 147.0 | - | 3′-OMe | 55.8 | 3.64 (s) |
| 4′ | 115.8 | 7.23 (br. s) | 3′′-OMe | 56.3 | 3.72 (s) |
| 5′ | 148.3 | - | 5′′-OMe | 56.3 | 3.72 (s) |
| 6′ | 120.3 | 7.24 (br. s) |