Table 2 NMR spectroscopic data (500 MHz, MeOD) for compound 4 (δ in ppm)
Position | δC | δH, multiplicity (J in Hz) | HSQC | HMBC | NOESY |
|---|---|---|---|---|---|
1 | 159.2 | - | - | - | - |
2 | 115.3 | 6.78, d (7.5) | C-2 | - | H-3 |
3 | 131.4 | 7.86, d (8.5) | C-3 | C-4 | - |
4 | 161.4 | - | - | - | - |
5 | 122.9 | - | - | - | - |
6 | 115.3 | 6.78, d (7.5) | C-6 | C-5, C-8 | H-7 |
7 | 129.3 | 7.42, d (8) | C-7 | C-1 | H-6, H- β |
8 | 126.3 | - | - | - | - |
9 | 114.3 | - | - | - | - |
10 | 114.3 | - | - | - | - |
1’ | 171.2 | - | - | - | - |
2’ | 115.3 | 6.78, d (7.5) | C-2’ | - | H-3’ |
3’ | 131.4 | 7.86, d (8.5) | C-3’ | C-4’ | - |
4’ | 169.8 | - | - | - | - |
5’ | 130.8 | - | - | - | - |
6’ | 115.3 | 6.78, d (7.5) | C-6’ | - | H-7’ |
7’ | 129.3 | 7.42, d (8) | C-7’ | C- α | H-6’ |
8’ | 128.3 | - | - | - | - |
9’ | 114.3 | - | - | - | - |
10’ | 114.4 | - | - | - | - |
β | 116.6 | 6.29, d (16) | - | C-8 | H-7 |
α | 143.5 | 7.51, d (16) | - | C-7’, C-1’ | - |