Table 1. NMR spectroscopic data of compound 1 .
Position | δ C | δ H ( J ) | Position | δ C | δ H ( J ) |
2 | 165.47 | - | 1" | 100.79 | 5.07,(d,8.4) |
3 | 106.82 | 6.59, s | 2" | 83.22 | * |
4 | 183.37 | - | 3" | 74.69 | * |
5 | 152.93 | - | 4" | 70.46 | * |
6 | 116.02 | - | 5" | 76.45 | * |
7 | 172.08 | - | 6" | 64.03 | * |
8 | 102.80 | 6.70, s | 1'" | 103.55 | 4.54 |
8a | 150.78 | - | 2'" | 72.03 | * |
4a | 101.57 | - | 3'" | 67.33 | * |
9 prenyl | 22.76 | overlapped | 4'" | 71.55 | * |
10 | 122.90 | 5.36, br t | 5'" | 72.41 | * |
11 | 128.68 | - | 6'" | 63.77 | * |
12 | 19.95 | 1.34, s | - | - | - |
13 | 25.01 | 1.29, s | - | - | - |
1' | 122.13 | - | - | - | - |
2' | 128.86 | 7.89,(d,8.4) | - | - | - |
3' | 116.02 | 6.94,(d,8.4) | - | - | - |
4' | 161.87 | - | - | - | - |
5' | 116.02 | 6.94,(d,8.4) | - | - | - |
6' | 128.86 | 7.89,(d,8.4) | - | - | - |
OCO-CH3 | 20.01 | 2.19, s | - | - | - |
OCO-CH3 | 176.82 | - | - | - | - |
1H (200MHz) and 13C (50MHz) in CD3OD, δ in ppm, J in Hz) ; * overlapping signals in 3.5-4.5ppm.