7-hydroxy-4'-methoxyflavone-3α-2'''',4''''-dihydroxy-4"-methoxydihydrochalcone

7-hydroxy-4'-methoxyflavone-3α-2'''',4''''-dihydroxy-4"-methoxydihydrochalcone

Common Name: 7-hydroxy-4'-methoxyflavone-3α-2'''',4''''-dihydroxy-4"-methoxydihydrochalcone

Synonyms:

CAS Registry Number:

InChI:

InChIKey:

Formula: C32H26O8

Molecular Weight: 538.55

Exact Mass: 538.1628

NMR Solvent: acetone-d6

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)
5 7.97 d 8.6
6 6.94 d 8.6
8 6.79 s
2', 6' 7.24 d 8.8
3', 5' 7 d 8.8
OCH3 3.89 s
α 4.8 dd 5.8, 7.8
β 3.54 dd 7.8, 13.8
β 2.94 dd 5.8, 13.8
2" 7.11 d 8.7
3" 6.74 d 8.7
5" 6.74 d 8.7
6" 7.11 d 8.7
3''' 6.2 d 2.4
5''' 6.15 dd 2.4, 8.9
6''' 7.35 d 8.5
OCH3 3.72 s

Carbon NMR Peaks

Position PPM
2 162.8
3 122.8
4 176.3
5 128.1
6 116.1
7 (may be reversed with 4''') 162.8
8 102.9
9 157.7
10 122.9
1' 125
2', 6' 131.1
3', 5' 114.5
4' 161.2
OCH3 55.3
α 48.2
β 35.7
β' 202.8
1" 132.3
2" 130.3
3" 114.2
4" 158.1
5" 114.2
6" 130.3
1''' 113.3
2''' 165.2
3''' 103.6
4''' (may be reversed with 7) 163.5
5''' 108.2
6''' 132.1
OCH3 55.8