2H-​Furo[2,​3-​h]​-​1-​benzopyran, 8,​9-​dihydro-​5-​methoxy-​8-​(1-​methylethenyl)​-​2-​phenyl-​3-​[2,​3,​ 7,​8-​tetrahydro-​4-​methoxy-​7-​(1-​methylethenyl)​-​2-​(phenylmethyl)​ benzo[1,​2-​b:3,​4-​b']​difuran-​3-​yl]​- (9CI)

2H-​Furo[2,​3-​h]​-​1-​benzopyran, 8,​9-​dihydro-​5-​methoxy-​8-​(1-​methylethenyl)​-​2-​phenyl-​3-​[2,​3,​ 7,​8-​tetrahydro-​4-​methoxy-​7-​(1-​methylethenyl)​-​2-​(phenylmethyl)​ benzo[1,​2-​b:3,​4-​b']​difuran-​3-​yl]​- (9CI)

Common Name: 2H-​Furo[2,​3-​h]​-​1-​benzopyran, 8,​9-​dihydro-​5-​methoxy-​8-​(1-​methylethenyl)​-​2-​phenyl-​3-​[2,​3,​ 7,​8-​tetrahydro-​4-​methoxy-​7-​(1-​methylethenyl)​-​2-​(phenylmethyl)​ benzo[1,​2-​b:3,​4-​b']​difuran-​3-​yl]​- (9CI)

Synonyms:

CAS Registry Number: 260437-88-5

InChI:

InChIKey:

Formula: C42H40O6

Molecular Weight: 640.776

Exact Mass: 640.2825

NMR Solvent: CDCl3

MHz: 200.0

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: synthesis - 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)
13" 1.61 br s
13 1.79 br s
9"α 2.65 dd 15, 10
9α 2.95 dd 15, 10
9"β 3.12 dd 15, 9
9β 3.3 dd 18, 9
2", 4" 3.65 m
OCH3 3.68 s
OCH3 3.73 s
12 4.79 br
12 4.98 s
12" 4.89 br
12'' 5.08 s
10" 5.04 t 10
3" 5.13 m
10 5.24 t 9
2 5.76 s
6 5.99 s
6" 6.06 s
4 6.38 s
2''' 6.95 m
3''', 4''', 5''' 7.18 m
3', 4', 5' 7.29 m
2', 6' 7.44 m