(2R,2'S,3S,3'R)-7,7'-dihydroxy-2,2'-bis(4-hydroxyphenyl)-[3,3'-bichromane]-4,4'-dione

(2R,2'S,3S,3'R)-7,7'-dihydroxy-2,2'-bis(4-hydroxyphenyl)-[3,3'-bichromane]-4,4'-dione

Common Name: (2R,2'S,3S,3'R)-7,7'-dihydroxy-2,2'-bis(4-hydroxyphenyl)-[3,3'-bichromane]-4,4'-dione

Synonyms: [3,​3'-​Bi-​4H-​1-​benzopyran]​-​4,​4'-​dione, 2,​2',​3,​3'-​tetrahydro-​7,​7'-​dihydroxy-​2,​2'-​bis(4-​hydroxyphenyl)​-​, (2R,​2'S,​3S,​3'R)​-

CAS Registry Number: 925684-18-0

InChI:

InChIKey:

Formula: C30H22O8

Molecular Weight: 510.49

Exact Mass: 510.1315

NMR Solvent: acetone-d6

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

Calibration: not indicated

NMR references: Ichino, C., Kiyohara, H., Soonthornchareonnon, N., Chuakul, W., Ishiyama, A., Sekiguchi, H., Namatame, M., Otoguro, K., Omura, S., Yamada, H. (2006). Antimalarial Activity of Biflavonoids from Ochna inegerrima. Planta Medica 72, 611-614.

Species: Ochna integerrima - Ichino, C., Kiyohara, H., Soonthornchareonnon, N., Chuakul, W., Ishiyama, A., Sekiguchi, H., Namatame, M., Otoguro, K., Omura, S., Yamada, H. (2006). Antimalarial Activity of Biflavonoids from Ochna inegerrima. Planta Medica 72, 611-614.

Notes:

Proton NMR Peaks

Position PPM Peak Type J (Hz)
5, 5" 7.78 d 8.5
6, 6" 6.59 dd 8.5, 2
8, 8" 6.29 d 2
2', 2''' and 6', 6''' 7.14 d 8.5
3', 3''' and 5', 5''' 6.88 d 8.5

Carbon NMR Peaks

Position PPM
2, 2" 82.5
3, 3" 49.8
4, 4" 190.7
10, 10" 114.4
5, 5" 130
6, 6" 111.5
7, 7" 165.4
8, 8" 103.4
9, 9" 164.2
1', 1''' 129.1
2', 2''' and 6', 6''' 130.6
3', 3''' and 5', 5''' 116.2
4', 4''' 159