Spektraris NMR
Sikokianin C
Common Name: Sikokianin C
Synonyms: [3,3'-Bi-4H-1-benzopyran]-4,4'-dione, 2,2',3,3'-tetrahydro-5,5',7,7'-tetrahydroxy-2-(4- hydroxyphenyl)-2'-(4-methoxyphenyl)-, (2R,2'S,3S,3'R)-
CAS Registry Number: 159813-69-1
InChI:
InChIKey:
Formula: C31H24O10
Molecular Weight: 556.52
Exact Mass: 556.137
NMR Solvent: CD3OD
MHz: 400 (1H), 100 (13C)
Calibration: not indicated
NMR references: Nunome, S., Ishiyama, A., Kobayashi, M., Otoguro, K., Kiyohara, H., Yamada, H., Omura, S. (2004). In Vitro Antimalarial Activity of Biflavonoids from Wikstroemia indica. Planta Medica 70, 76-78.
Baba, K., Taniguchi, M., Kozawa, M. (1994). Three Biflavonoids From Wikstroemia sikokiana. Phytochemistry 37, 879-883.
Species: Wikstroemia indica - Nunome, S., Ishiyama, A., Kobayashi, M., Otoguro, K., Kiyohara, H., Yamada, H., Omura, S. (2004). In Vitro Antimalarial Activity of Biflavonoids from Wikstroemia indica. Planta Medica 70, 76-78.
Notes: NMR peaks not assigned.
Proton NMR Peaks
| Position | PPM | Peak Type | J (Hz) |
|---|---|---|---|
| 2 | 5.17 | d | 9 |
| 3 | 3.33 | dd | 9, 3.5 |
| 6 | 5.87 | d | 2 |
| 8 | 5.97 | d | 2 |
| 2' | 7.02 | d | 9 |
| 3' | 6.74 | d | 9 |
| 5' | 6.74 | d | 9 |
| 6' | 7.02 | d | 9 |
| 2" | 5.52 | d | 3.5 |
| 3" | 3.23 | dd | 3.5, 3.5 |
| 6" | 5.76 | d | 2 |
| 8" | 5.85 | d | 2 |
| 2'" | 7.16 | d | 9 |
| 3'" | 6.78 | d | 9 |
| 5'" | 6.78 | d | 9 |
| 6'" | 7.16 | d | 9 |
Carbon NMR Peaks
| Position | PPM |
|---|---|
| 2 | 81.4 |
| 3 | 49.5 |
| 4 | 196 |
| 5 | 165.1 |
| 6 | 97.1 |
| 7 | 168.2 |
| 8 | 96 |
| 9 | 163.3 |
| 10 | 105 |
| 1' | 130.1 |
| 2' | 128.5 |
| 3' | 116.3 |
| 4' | 161.3 |
| 5' | 116.3 |
| 6' | 129.5 |
| 2" | 82.9 |
| 3" | 50.8 |
| 4" | 198.5 |
| 5" | 165.4 |
| 6" | 97.1 |
| 7" | 168.3 |
| 8" | 96.4 |
| 9" | 165.1 |
| 10" | 103.8 |
| 1'" | 128.6 |
| 2'" | 130.2 |
| 3'" | 114.7 |
| 4'" | 158.6 |
| 5'" | 114.7 |
| 6'" | 130.2 |
