Spektraris NMR
Hypnumbiflavonoid A
Common Name: Hypnumbiflavonoid A
Synonyms: 2H-Benzofuro[2,3-h]-1-benzopyran-4,9(3H,8H)-dione, 11a-(3,4-dihydro-3,5,7-trihydroxy-4-oxo-2H-1-benzopyran-2-yl)-7a,11a-dihydro-3,5-dihydroxy-2-(4-hydroxyphenyl)- (9CI)
CAS Registry Number: 156250-62-3
InChI:
InChIKey:
Formula: C30H22O12
Molecular Weight: 574.49
Exact Mass: 574.1111
NMR Solvent: acetone-d6
MHz: 400 (1H)
Calibration: Solvent signals used as internal standards.
NMR references: Sievers, H., Burkhardt, G., Becker, H., Zinsmeister, H. (1994). Further Biflavonoids and 3'-Phenylflavonoids from Hypnum cupressiforme. Phytochemistry 33, 795-798.
Species: Hypnum cupressiforme - Sievers, H., Burkhardt, G., Becker, H., Zinsmeister, H. (1994). Further Biflavonoids and 3'-Phenylflavonoids from Hypnum cupressiforme. Phytochemistry 33, 795-798.
Notes:
Proton NMR Peaks
| Position | PPM | Peak Type | J (Hz) |
|---|---|---|---|
| 2 | 5.13 | d | 11.6 |
| 3 | 4.46 | d | 11.6 |
| 6 | 6.03 | s | |
| 2' | 7.11 | m | |
| 3' | 6.58 | m | |
| 5' | 6.58 | m | |
| 6' | 7.11 | m | |
| 2" | 4.88 | d | 12.2 |
| 3"-OH | 4.56 | d | 12.2 |
| 6" | 5.85 | d | 2 |
| 8" | 5.99 | d | 2 |
| 2''' | 5.56 | m | |
| 3'''a | 3 | dd | 18.8, 2.2 |
| 3'''b | 3.03 | dd | 18.8, 3.6 |
| 5''' | 5.9 | d | 10.2 |
| 6''' | 6.74 | dd | 10.2, 1.6 |
