Crassifolin

Crassifolin

Common Name: Crassifolin

Synonyms: 2H-​Furo[2,​3-​h]​-​1-​benzopyran, 4,​4'-​oxybis[3,​4,​8,​9-​tetrahydro-​5-​methoxy-​8-​(1-​methylethenyl)​-​2-​phenyl-​, (2R,​2'R,​4S,​4'S,​8R,​8'R)​-​rel-

CAS Registry Number: 260549-40-4

InChI:

InChIKey:

Formula: C42H42O7

Molecular Weight: 658.791

Exact Mass: 658.2931

NMR Solvent: CDCl3

MHz: 300.0

Calibration: not indicated

NMR references: Gomez-Garibay, F., Calderon, J., De La O Arciniega, M., Cespedes, C., Tellez-Valdes, O., Taboada, J. (1999). An unusual isopropenyldihydrofuran biflavanol from Tephrosia crassifolia. Phytochemistry 52, 1159-1163.

Species: Tephrosia crassifolioa - Gomez-Garibay, F., Calderon, J., De La O Arciniega, M., Cespedes, C., Tellez-Valdes, O., Taboada, J. (1999). An unusual isopropenyldihydrofuran biflavanol from Tephrosia crassifolia. Phytochemistry 52, 1159-1163.

Notes:

Proton NMR Peaks

Position PPM Peak Type J (Hz)
2β, 2"β 5.37 dd 2.4, 12
3α, 3"α 1.95 ddd 14.1, 12, 2.4
3β, 3"β 2.84 ddd 14.4, 12, 2.4
4α, 4"α 4.9 t 2.4
6, 6" 6.04 s
9α, 9"α 3.16 dd 15.3, 9.6
9β, 9"β 2.86 dd 15.3, 9
10, 10" 5.14 dd 9.6, 9
12a, 12"a 4.86 br s
12b, 12"b 5.04 br s
13, 13" 1.75 br s
OCH3 3.54 s
OCH3 3.54 s
phenyl groups range 7.36 m
phenyl groups range 7.56 m