Spektraris NMR
Loniflavone
Common Name: Loniflavone
Synonyms: 4H-1-Benzopyran-4-one, 2-[4-[4-(5,7-dihydroxy-4-oxo-4H-1-benzopyran-2-yl)-2-hydroxyphenoxy]phenyl]-5,7-dihydroxy-
CAS Registry Number: 871796-44-0
InChI:
InChIKey:
Formula: C30H18O10
Molecular Weight: 538.46
Exact Mass: 538.09
NMR Solvent: pyridine-d5
MHz: 300.13 (1H), 75.46 (13C)
Calibration: not indicated
NMR references: Kumar, N., Singh, B., Bhandari, P., Gupta, A., Uniyal, S., Kaul, V. (2005). Biflavonoids from Lonicera japonica. Phytochemistry 66, 2740-2744.
Species: Lonicera japonica - Kumar, N., Singh, B., Bhandari, P., Gupta, A., Uniyal, S., Kaul, V. (2005). Biflavonoids from Lonicera japonica. Phytochemistry 66, 2740-2744.
Notes:
Proton NMR Peaks
| Position | PPM | Peak Type | J (Hz) |
|---|---|---|---|
| 3 | 6.82 | s | |
| 6 | 6.67 | d | 2.4 |
| 7 (OH) | 8.76 | not indicated | |
| 8 | 6.7 | d | 2.4 |
| 2' | 7.97 | d | 2.4 |
| 5' | 7.32 | d | 9 |
| 6' | 7.75 | dd | 8.8, 2.4 |
| 3" | 6.93 | s | |
| 5" (OH) | 12.83 | s | |
| 6" | 6.67 | d | 2.5 |
| 7" (OH) | 8.76 | not indicated | |
| 8" | 6.7 | d | 2.5 |
| 2''' | 7.8 | d | 9 |
| 3''' | 7.1 | d | 9 |
| 5''' | 7.1 | d | 9 |
| 6''' | 7.8 | d | 9 |
Carbon NMR Peaks
| Position | PPM |
|---|---|
| 2 | 163.1 |
| 3 | 104.8 |
| 4 | 182.5 |
| 10 | 105 |
| 5 | 161.1 |
| 6 | 99.9 |
| 7 | 166.1 |
| 8 | 94.7 |
| 9 | 157.4 |
| 1' | 125.1 |
| 2' | 118.8 |
| 3' | 154.7 |
| 4' | 144.4 |
| 5' | 121.4 |
| 6' | 124.8 |
| 2" | 163.4 |
| 3" | 105 |
| 4" | 182.5 |
| 10'' | 104.7 |
| 5" | 161.1 |
| 6" | 99.9 |
| 7" | 166.1 |
| 8" | 94.7 |
| 9'' | 157.4 |
| 1''' | 125.8 |
| 2''' | 128.4 |
| 3''' | 116.5 |
| 4''' | 161 |
| 5''' | 116.5 |
| 6''' | 128.4 |
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