4',7-Dimethoxy-5-hydroxyflavone-(3'-O-4''')-7"-methoxy-5"-hydroxyflavanone

4',7-Dimethoxy-5-hydroxyflavone-(3'-O-4''')-7"-methoxy-5"-hydroxyflavanone

Common Name: 4',7-Dimethoxy-5-hydroxyflavone-(3'-O-4''')-7"-methoxy-5"-hydroxyflavanone

Synonyms: 4H-​1-​Benzopyran-​4-​one, 2,​3-​dihydro-​5-​hydroxy-​2-​[4-​[5-​(5-​hydroxy-​7-​methoxy-​4-​oxo-​4H-​1-​benzopyran-​2-​yl)​-​2-​methoxyphenoxy]​phenyl]​-​7-​methoxy-​, (2S)​-

CAS Registry Number: 406217-00-3

InChI:

InChIKey:

Formula: C33H26O10

Molecular Weight: 582.561

Exact Mass: 582.1526

NMR Solvent: D3CCOCD3

MHz: 500 (1H), 125 (13C)

Calibration: TMS

NMR references: de Oliveira, M., de Carvalho, M., da Silva, C., Werle, A. (2002). New Biflavonoid and Other Constituents from Luxemburgia nobilis (EICHL). J. Braz. Chem. Soc. 13, 119-123.

Species: synthesis - de Oliveira, M., de Carvalho, M., da Silva, C., Werle, A. (2002). New Biflavonoid and Other Constituents from Luxemburgia nobilis (EICHL). J. Braz. Chem. Soc. 13, 119-123.

Notes:

Proton NMR Peaks

Position PPM Peak Type J (Hz)
3 6.51 s
5-OH 12.66 s
6 6.5 s
7-OCH3 3.78 s
8 6.17 s
2' 7.64 s
4'-OCH3 3.7 s
5' 7.21 d 8
6' 7.8 d 8
2" 5.42 brd 12
3" 3.04 dd 12, 16
3" 2.7 dd 6, 16
5"-OH 11.88 s
6" 5.92 s
7"-OCH3 3.77 s
8" 5.89 s
2''', 6''' 7.38 d 8
3''', 5''' 6.83 d 8

Carbon NMR Peaks

Position PPM
2 162.54
3 106.75
4 182.64
5 158.97
6 98.36
7 164.71
7-OCH3 55.38
8 94.15
9 158
10 106
1' 123
2' 120.75
3' 143
4' 153.69
4'-OCH3 56.11
5' 113.85
6' 125.12
2" 75.17
3" 43.01
4" 196.84
5" 163.85
6" 95.03
7" 168.39
7"-OCH3 55.76
8" 92.83
9" 166.19
10" 101
1''' 131.51
2''', 6''' 128.56
3''', 5''' 116.32
4''' 155.69