5-hydroxy-7-methoxyflavone(4'-O-8")5",7"-dihydroxy-4'''-methoxyflavone

5-hydroxy-7-methoxyflavone(4'-O-8")5",7"-dihydroxy-4'''-methoxyflavone

Common Name: 5-hydroxy-7-methoxyflavone(4'-O-8")5",7"-dihydroxy-4'''-methoxyflavone

Synonyms: 4H-​1-​Benzopyran-​4-​one, 5,​7-​dihydroxy-​8-​[4-​(5-​hydroxy-​7-​methoxy-​4-​oxo-​4H-​1-​benzopyran-​2-​yl)​phenoxy]​-​2-​(4-​methoxyphenyl)​-

CAS Registry Number: 487004-72-8

InChI:

InChIKey:

Formula: C32H22O10

Molecular Weight: 566.52

Exact Mass: 566.1213

NMR Solvent: CD3SOCD3

MHz: 400 (1H), 100 (13C)

Calibration: TMS

NMR references: Velandia, J., de Carvalho, M., Braz-Filho, R., Werle, A. (2002). Biflavonoids and a Glucopyranoside Derivative from Ouratea semiserrata. Phytochem. Anal. 13, 283-292.

Species: Ouratea semiserrata - Velandia, J., de Carvalho, M., Braz-Filho, R., Werle, A. (2002). Biflavonoids and a Glucopyranoside Derivative from Ouratea semiserrata. Phytochem. Anal. 13, 283-292.

Notes:

Proton NMR Peaks

Position PPM Peak Type J (Hz)
3 6.83 s
6 6.35 brs
8 6.73 brs
2', 6' 8.03 brs
3', 5' 7.16 brs
3" 6.76 s
6" 6.41 s
2''', 6''' 7.65 d 8.4
3''', 5''' 6.73 d 8.4
7-OCH3 3.8 s
5-OH 12.82 s
5"-OH 12.7 s

Carbon NMR Peaks

Position PPM
2 163.5
3 104.36
4 182.15
5 161.57
6 98.25
7 165.42
7-OCH3 55.8
8 92.92
9 157.87
10 104.17
1' 124.61
2', 6' 128.79
3', 5' 115.73
4' 161.16
2" 163.07
3" 103.06
4" 181.83
5" 157.45
6" 99.44
7" 156.95
8" 121.36
9" 149.11
10" 103.06
1''' 120.79
2''', 6''' 128.06
3''', 5''' 114.56
4''' 162.08