Spektraris NMR
Lophirone A tetramethyl ether
Common Name: Lophirone A tetramethyl ether
Synonyms: Afzelone D dimethyl ether; 4H-1-Benzopyran-4-one, 3-[(1R)-1-[bis(4-methoxyphenyl)methyl]-2-(2-hydroxy-4-methoxyphenyl)-2-oxoethyl]-7-methoxy-
CAS Registry Number: 110383-36-3
InChI:
InChIKey:
Formula: C34H30O8
Molecular Weight: 566.606
Exact Mass: 566.1941
NMR Solvent: CD3CO
MHz: 400 (1H), 100 (13C)
Calibration: TMS
NMR references: Ghogomu, R., Sondengam, B., Martin, M., Bodo, B. (1987). Lophirone A, A Biflavonoid with Unusual Skeleton from Lophira Lanceolata. Tetrahedron Lett. 28, 2967-2968.
Species: synthesis - Ghogomu, R., Sondengam, B., Martin, M., Bodo, B. (1987). Lophirone A, A Biflavonoid with Unusual Skeleton from Lophira Lanceolata. Tetrahedron Lett. 28, 2967-2968.
Notes:
Proton NMR Peaks
| Position | PPM | Peak Type | J (Hz) |
|---|---|---|---|
| 2 | 8.335 | s | |
| 5 | 7.969 | d | 8.9 |
| 6 | 6.971 | dd | 8.9, 2.4 |
| 8 | 6.904 | d | 2.4 |
| β | 6.194 | d | 12.4 |
| 3' | 6.297 | d | 2.5 |
| 5' | 6.516 | dd | 9.1, 2.5 |
| 6' | 8.393 | d | 9.1 |
| γ | 4.887 | d | 12.4 |
| 2'' | 7.359 | m | |
| 3'' | 6.691 | m | |
| 5'' | 6.691 | m | |
| 6'' | 7.359 | m | |
| 2''' | 7.359 | m | |
| 3''' | 6.735 | m | |
| 5''' | 6.735 | m | |
| 6''' | 7.359 | m | |
| OCH3 | 3.888 | s | |
| OCH3 | 3.827 | s | |
| OCH3 | 3.659 | s | |
| OCH3 | 3.62 | s | |
| OH-2' | 12.6 | s |
