5,7-Dihydroxy-4'-methoxyflavone-3α-2'''-hydroxy-4''',4"-dimethoxydihydrochalcone

5,7-Dihydroxy-4'-methoxyflavone-3α-2'''-hydroxy-4''',4"-dimethoxydihydrochalcone

Common Name: 5,7-Dihydroxy-4'-methoxyflavone-3α-2'''-hydroxy-4''',4"-dimethoxydihydrochalcone

Synonyms:

CAS Registry Number:

InChI:

InChIKey:

Formula: C33H28O9

Molecular Weight: 568.58

Exact Mass: 568.1733

NMR Solvent: CDCl3

MHz: 300 (1H), 75 (13C)

Calibration: not indicated

NMR references: de Oliveira, J., David, J., David, J. (2016). Biflavonoids from the bark roots of Poincianella pyramidalis (Fabaceae). Phytochemistry 16, 18-22.

Species: Poincianella pyramidalis - de Oliveira, J., David, J., David, J. (2016). Biflavonoids from the bark roots of Poincianella pyramidalis (Fabaceae). Phytochemistry 16, 18-22.

Notes:

Proton NMR Peaks

Position PPM Peak Type J (Hz)
6 6.27 d 2.1
8 6.24 d 2.1
2', 6' 7.1 d 9
3', 5' 6.93 d 9
OH 12.75 s
OCH3 3.97 s
OCH3 3.88 s
α 4.83 t 6.3
β 3.53 dd 6.3, 13.9
β 3.07 dd 6.3, 13.9
2" 7.29 d 8
3" 6.76 d 8
5" 6.76 d 8
6" 7.29 d 8
3''' 6.35 d 2.5
5''' 6.21 dd 2.5, 9
6''' 7.12 d 9
OH 12.24 s
OCH3 3.77 s

Carbon NMR Peaks

Position PPM
2 164
3 119.9
4 180.9
5 162.2
6 99.3
7 157.6
8 93.8
9 162.8
10 104.6
1' 124.2
2', 6' 130.1
3', 5' 113.8
4' 161.8
OCH3 55.4
OCH3 55.2
α 46.8
β 35
β' 201.8
1" 131.6
2" 130.2
3" 113.7
4" 165.5
5" 113.7
6" 130.2
1''' 112.9
2''' 165.1
3''' 101
4''' 158.3
5''' 107.1
6''' 130.8
OCH3 55.4