4',4'''-Di-O-methyl cupressuflavone

4',4'''-Di-O-methyl cupressuflavone

Common Name: 4',4'''-Di-O-methyl cupressuflavone

Synonyms: 5,5',7,7'-Tetrahydroxy-2,2'-bis(4-methoxyphenyl)[8,8'-bi-4H-1-benzopyran]-4,4'-dione

CAS Registry Number: 74336-91-7

InChI:

InChIKey:

Formula: C32H22O10

Molecular Weight: 566.518

Exact Mass: 566.1213

NMR Solvent: DMSO-d6

MHz: not indicated

Calibration: TMS

NMR references: Hnatyszyn, O., Ferraro, G., Coussio, J. (1987). A Biflavonoid From Phyllanthus sellowianus. J. Nat. Prod. 50, 1156-1157.

Species: Phyllanthus sellowianus - Hnatyszyn, O., Ferraro, G., Coussio, J. (1987). A Biflavonoid From Phyllanthus sellowianus. J. Nat. Prod. 50, 1156-1157.

Notes: NMR data obtained from Varian FT 90 A instrument.

Proton NMR Peaks

Position PPM Peak Type J (Hz)
3, 3" 6.97 s
5-OH, 5"-OH 13.87 s
6, 6" 6.6 s
7-OH, 7"-OH 12.82 s
2', 6' 8.15 d
3', 5', 3''', 5''' 7.2 d
4'-OCH3, 4'''-OCH3 3.97 s

Carbon NMR Peaks

Position PPM
2, 2" 161.2
3, 3" 105
4, 4" 185.4
5, 5" 158.7
6, 6" 86.5
7, 7" 160
8, 8" 100
9, 9" 157.5
10, 10" 107.5
1', 1''' 121.2
2', 2''', 6', 6''' 131.2
3', 3''', 5', 5''' 112.5
4', 4''' 162
4'-OCH3, 4'''-OCH3 55