Table 3.
1H-NMR of isolated flavonoids in DMSO:
| Proton No. |
I 500 MHz |
II 270 MHz |
III 500 MHz |
IV 500 MHz |
V 500 MHz |
VI 500 MHz |
VII 500 MHz |
VIII 300 MHz |
| 3 | 6.9590 | 6.98 | - | 6.7512 | - | 6.6890 | - | 6.848 |
| 6 | - | 6.96 | 6.6839 | - | - | - | 6.9865 d.J=2.1 |
- |
| 8 | 6..9865 | - | - | 6.8444 | - | 6.8505 | 6..9865 d.J=2.1 |
- |
| 2‵ 6‵ |
8.0717-8.0901 d.J=9.19 |
8.05-8.09 d.J=8.9 |
8.0075-7.9907 d.J=8.4 |
7.9632-7.9479 d.J=7.65 |
8.0091-7.9923 d.J=8.4 |
7.9433-7.9602 d.J=8.45 |
8.0947-8.0794 d.J=7.65 (2‵) 7.5231(6‵) |
8.055-8.025 d.J=9.0 |
| 3‵ 5‵ |
7.2173-7.1990 d.J=9.15 |
7.17-7.20 d.J=8.9 |
7.1913-7.1745 d.J=8.4 |
7.1424-7.1256 d.J=8.4 |
7.1898-7.1715 d.J=9.15 |
6.9360-6.9529 d.J=8.45 |
7.2173-7.2005 d.J=8.4(5‵) | 6.894-6.864 d.J=9.0 |
| H-1‶ | 5.0332-5.0469 d.J=6.85 7, O-glucosyl |
5.01-5.04 d.J=6.92 7,O-glucosyl |
5.0177-5.0041 d.J=6.8 7,O-glucosyl |
4.9843m 6,O-galactosyl |
4.9996-5.0134 d.J=6.9 7, O-glucosyl |
5.1784m 7, O-glucosyl |
5.0332 3,O-rhamnosyl |
4.123 d. 8, C-glucosyl |
| H-2‶ to H-6‶ |
4.5899, 5.1203, 5.3832 (aliphatic glucose protons) |
3.32-3.43 (aliphatic glucose protons) |
3.32-3.43, 5.2212 5.4932 (aliphatic glucose protons) |
5.4780, m (aliphatic sugar protons) |
5.4550, 5.5437 m (aliphatic sugar protons) |
3.1715, 3.5093 5.2938, 5.3908 (aliphati c sugar protons) |
- | - |
| H-1‷ | - | - | 4.7626 m-8, C-rhamnosyl |
4.7718 apiosyl |
4.7749m 8, C-glucosyl |
- | - | 4.147 d. 6, C-glucosyl |
| H-2‷ to H-5‷ |
- | - | 4.49529 4.6404m |
- | 4.6725m | - | - | - |
| CH3-rhamnos yl |
- | - | 1.2350m | - | - | - | 1.1188-1.1066 DJ= 6.1 |
- |
| H-1‵‷ | - | - | 5.2212 3, O-arabinofuranoside |
- | - | - | - | - |
| H-2‵‷ to H-5‵‷ |
- | - | 5.4932m | - | - | - | - | - |
| OCH3-4‵ | 3.7432 | 3.62 | 3.6698 | 3.6515 | 3.6667 | - | - | - |
| OCH3-6 | 3.9373 | - | - | - | 3.8517 | 3.7692 | - | - |
| OCH3-8 | - | 3.92 | - | - | - | - | - | - |