Table 1. 1H NMR and 13C NMR data of compounds 1 in MeOH-d4.
Position | dH (J in Hz)(ppm) | dC(ppm) |
2 | - | 165.2 |
3 | 6.82 | 103.82 |
4 | - | 182.78 |
5 | - | 162.44 |
6 | 6.43(d, J=2.1) | 100.35 |
7 | - | 163.80 |
8 | 6.77(d, J=2.1) | 95.5 |
9 | - | 157.79 |
10 | - | 106 |
1' | - | 121.60 |
2' | 7.92(d, J=8.15) | 129.35 |
3' | 6.92(d, J=8.15) | 116.86 |
4' | - | 162.4 |
5' | 6.92(d, J=8.15) | 116.86 |
6' | 7.92(d, J=8.15) | 129.35 |
ß-D-glucuronide (at C-7) | ||
1'' | 5.15 | 100.35 |
2'' | m* | 73.77 |
3'' | m | 74.98 |
4'' | m | 72.78 |
5'' | 4.25(d, J=9) | 77.2 |
6'' | - | 173.49 |
*multiple