Genkwanol C

Genkwanol C

Common Name: Genkwanol C

Synonyms: 1H,​5H,​12H-​Furo[3,​4-​b:2,​3-​h']​bis[1]​benzopyran-​1,​5-​dione, 4,​4a,​13,​14-​tetrahydro-​4a,​6,​8,​13-​tetrahydroxy-​4,​12-​bis(4-​hydroxyphenyl)​-​, (4R,​4aS,​10aR,​12R,​13S)​-

CAS Registry Number: 151283-11-3

InChI:

InChIKey:

Formula: C30H22O11

Molecular Weight: 558.495

Exact Mass: 558.1162

NMR Solvent: DMSO-d6

MHz: 300 (1H), 75.4 (13C)

Calibration: TMS

NMR references: Baba, K., Taniguchi, M., Kozawa, M. (1993). A Third Spirobiflavonoid Genkwanol C From Daphne genkwa. Phytochemistry 33, 913-916.

Species: Daphne genkwa - Baba, K., Taniguchi, M., Kozawa, M. (1993). A Third Spirobiflavonoid Genkwanol C From Daphne genkwa. Phytochemistry 33, 913-916.

Notes:

Proton NMR Peaks

Position PPM Peak Type J (Hz)
2 4.61 d 6.2
3 3.77 m
4 2.21 d 5.1
6 5.72 s
2', 6' 6.96 d 8.8
3', 5' 6.59 d 8.8
2" 5.92 s
6" 5.93 d 2.2
8" 6 d 2.2
2''', 6''' 7.07 d 8.8
3''', 5''' 6.74 d 8.8
OH 11.18 s
OH 11.08 s
OH 9.08 s
OH 9.34 s
OH 6.7 s
OH 5.15 d 4.8

Carbon NMR Peaks

Position PPM
2 82.1
3 65.3
4 25.3
5 187
6 101.1
7 169.1
8 84.9
9 (may be interchanged with 4', 4''') 157.2
10 109.9
1' 128.2
2', 6' 127.8
3', 5' 114.9
4' (may be interchanged with 9, 4''') 157.9
2" 90.7
3" 80.3
4" 191
5" 163.3
6" 97.1
7" 167.8
8" 96.1
9" 160.8
10" 99.6
1''' 122.3
2''', 6''' 130.1
3''', 5''' 114.9
4''' (may be interchanged with 9, 4') 158.7