8,8'-bis(7,8-dihydroxy-2-methyl-2H-chromen-5-yl)-4,4'-dimethoxy-6H,6'H-[5,5'-bifuro[3,2-h]chromene]-6,6'-dione

8,8'-bis(7,8-dihydroxy-2-methyl-2H-chromen-5-yl)-4,4'-dimethoxy-6H,6'H-[5,5'-bifuro[3,2-h]chromene]-6,6'-dione

Common Name: 8,8'-bis(7,8-dihydroxy-2-methyl-2H-chromen-5-yl)-4,4'-dimethoxy-6H,6'H-[5,5'-bifuro[3,2-h]chromene]-6,6'-dione

Synonyms:

CAS Registry Number: 884309-62-0

InChI:

InChIKey:

Formula: C44H30O14

Molecular Weight: 782.71

Exact Mass: 782.1636

NMR Solvent: DMSO-d6

MHz: 300 (1H), 75 (13C)

Calibration: not indicated

NMR references: Yadav, S., Bhadoria, B. (2005). Two dimeric flavonoids from Bauhinia purpurea. Indian J. Chem. 44B, 2604-2607.

Species: Bauhinia purpurea - Yadav, S., Bhadoria, B. (2005). Two dimeric flavonoids from Bauhinia purpurea. Indian J. Chem. 44B, 2604-2607.

Notes:

Proton NMR Peaks

Position PPM Peak Type J (Hz)
3 6.47 s
6, OCH3 3.67 s
2' 7.29 s
3'-OH, 4'-OH 12.6 bs
4" 6.7 d 8
5" 7.3 d 8
6" 1.77 s
4''' 5.99 d 1.2
5''' 6.25 d 1.2
CH3 1.21 s

Carbon NMR Peaks

Position PPM
2 164
3 104
4 180
5 129.2
6 161.1
7 138.2
8 157.2
9 160.1
10 109.8
1' 128.4
2' 122.4
3' 145.8
4' 149.7
5' 113.4
6' 155.6
CH3O 61.2
4''' 114.4
5''' 130.1
4" 110.4
5" 130.9
6" 77.8
7" 27.6