amentoflavone

amentoflavone

Common Name: amentoflavone

Synonyms: didemethyl-ginkgetin, 3',8''-biapigenin,

CAS Registry Number: 1617-53-4

InChI:

InChIKey:

Formula: C30H18O10

Molecular Weight: 538.45792

Exact Mass: 538.089997

NMR Solvent: DMSO-d6

MHz: 600.0

Calibration:

NMR references: Geiger H., Seeger T., Hahn H., Zinsmeister H.D., Markhman K., Wong H. (1993)1H NMR assignments in biflavonoid spectra by proton-detected C-H correlation Arbeitskreis Chemie aund Biologie der Moose 73.

Species:

Notes: Markham K.R., Sheppard C., and Geiger H. (1987) 13C NMR studies of some naturally occurring amentoflavone and hinkiflavone biflavonoids. Phytochemistry 26, 3335-3337. first published NMR data. But Geiger et all. (1993)published complete proton and carbon NMR data.

Proton NMR Peaks

Position PPM Peak Type J (Hz)
3 6.81 s
6 6.19 d
8 6.46 d
2` 7.99 d
5` 7.15 d
6` 8 dd
3`` 6.77 s
6`` 6.4 s
2``` 7.57 d
3``` 6.72 d
5``` 6.72 d
6``` 7.57 d

Carbon NMR Peaks

Position PPM
3 103.2
6 99.1
8 94.2
2` 131.6
5` 116.4
6` 127.9
3`` 102.8
6`` 98.8
2``` 128.3
3``` 116
5``` 116
6``` 128.3