Table 2.
13C-NMR data (500 MHz, CD3OD) of the eight flavonoids (ppm).
| Position | Naringenin | Eriodictyol | Kaempferol | Luteolin | Astragalin | Luteolin-7-O-β-D-glucoside | Naringin | Neoeriocitrin |
|---|---|---|---|---|---|---|---|---|
| 1 | ||||||||
| 2 | 79.1 | 78.· | 146.4 | 164.3 | 156.8 | 164.5 | 80.5 | 79.3 |
| 3 | 42.6 | 41.9 | 135.7 | 102.9 | 133.2 | 103.0 | 44.0 | 42.9 |
| 4 | 196.3 | 196.0 | 175.9 | 181.7 | 177.2 | 181.8 | 198.3 | 197.2 |
| 5 | 164.3 | 163.4 | 160.7 | 157.6 | 161.2 | 161.1 | 165.5 | 163.6 |
| 6 | 95.8 | 94.9 | 98.2 | 99.2 | 99.6 | 99.5 | 96.5 | 96.4 |
| 7 | 166.4 | 166.6 | 163.7 | 164.5 | 165.6 | 162.9 | 166.4 | 165.2 |
| 8 | 95.1 | 95.7 | 93.5 | 94.0 | 93.9 | 94.7 | 95.3 | 95.4 |
| 9 | 163.5 | 162.4 | 156.0 | 161.5 | 156.1 | 156.9 | 164.4 | 163.2 |
| 10 | 102.3 | 101.8 | 103.1 | 103.7 | 103.5 | 105.3 | 104.7 | 103.5 |
| 1′ | 129.9 | 129.4 | 121.7 | 121.5 | 120.1 | 120.9 | 130.6 | 130.1 |
| 2′ | 128.1 | 114.3 | 129.5 | 113.9 | 130.1 | 113.3 | 128.9 | 113.4 |
| 3′ | 115.0 | 145.7 | 115.1 | 146.3 | 115.2 | 145.9 | 116.1 | 145.1 |
| 4′ | 157.6 | 145.0 | 159.2 | 149.9 | 160.4 | 150.5 | 158.9 | 145.6 |
| 5′ | 115.3 | 115.3 | 115.1 | 116.1 | 115.8 | 115.9 | 116.1 | 114.8 |
| 6′ | 128.1 | 117.9 | 129.6 | 119.2 | 130.3 | 119.2 | 128.9 | 118.0 |
| 1″ | — | — | — | — | — | 99.9 | — | — |
| 2″ | — | — | — | — | — | 73.1 | — | — |
| 3″ | — | — | — | — | — | 76.4 | — | — |
| 4″ | — | — | — | — | — | 70.8 | — | — |
| 5″ | — | — | — | — | — | 82.0 | — | — |
| 6″ | — | — | — | — | — | 60.6 | — | — |
| Glc-1 | — | — | — | — | 101.1 | — | 102.4 | 101.2 |
| Glc-2 | — | — | — | — | 74.3 | — | 79.0 | 77.8 |
| Glc-3 | — | — | — | — | 77.5 | — | 78.8 | 77.6 |
| Glc-4 | — | — | — | — | 69.9 | — | 71.0 | 70.8 |
| Glc-5 | — | — | — | — | 76.5 | — | 77.9 | 76.7 |
| Glc-6 | — | — | — | — | 60.9 | — | 62.0 | 60.9 |
| Rha-1 | — | — | — | — | — | — | 99.1 | 98.0 |
| Rha-2 | — | — | — | — | — | — | 72.0 | 70.8 |
| Rha-3 | — | — | — | — | — | — | 72.0 | 69.8 |
| Rha-4 | — | — | — | — | — | — | 73.7 | 72.5 |
| Rha-5 | — | — | — | — | — | — | 69.8 | 68.6 |
| Rha-6 | — | — | — | — | — | — | 18.0 | 16.9 |