Genkwanol B pentamethyl ether

Genkwanol B pentamethyl ether

Common Name: Genkwanol B pentamethyl ether

Synonyms:

CAS Registry Number: 142674-70-2

InChI:

InChIKey:

Formula: C35H32O11

Molecular Weight: 628.63

Exact Mass: 628.1945

NMR Solvent: CDCl3

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

Calibration: TMS

NMR references: Baba, K., Taniguchi, M., Kozawa, M. (1992) A Spirobiflavonoid Genkwanol B from Daphne Genkwa. Phytochemistry 31, 975-980.

Species: synthesis from Genkwanol B - Baba, K., Taniguchi, M., Kozawa, M. (1992) A Spirobiflavonoid Genkwanol B from Daphne Genkwa. Phytochemistry 31, 975-980.

Notes:

Proton NMR Peaks

Position PPM Peak Type J (Hz)
2 4.6 d 6.7
3 3.7 m
4 2.72 dd 17.3, 5
4 2.28 dd 17.3, 7.5
6 5.77 s
2', 6' 6.72 d 8.8
3', 5' 6.62 d 8.8
2" 5.83 s
6" 6.09 d 2.2
8" 6.14 d 2.2
2''', 6''' 7.12 d 8.8
3''', 5''' 6.77 d 8.8
OH 3.8 br
OCH3 3.81 s
OCH3 3.71 s
OCH3 3.69 s
OCH3 3.69 s
OCH3 3.31 s

Carbon NMR Peaks

Position PPM
2 82.35
3 67.61
4 25.54
10 110.56
5 187.48
6 102.3
7 169.33
8 84.93
9 158.05
1' 129.16
2', 6' 127.88
3', 5' 114.24
4' 160.24
2" 90.94
3" 86.1
4" 183.2
10"a 105.53
5" 163.35
6" 94.45
7" 167.22
8" 94.58
9"a 162.87
1''' 124.36
2''', 6''' 130.03
3''', 5''' 113.85
4''' 160.72
OCH3 56.57
OCH3 56.18
OCH3 55.86
OCH3 55.58
OCH3 55.46