1H,5H,12H-Furo[3,4-b:2,3-h']bis[1]benzopyran-5-one, 4,4a,13,14-tetrahydro-1,4a,6,8,13-pentamethoxy-4,12-bis(4-methoxyphenyl)- (9CI)

1H,5H,12H-Furo[3,4-b:2,3-h']bis[1]benzopyran-5-one, 4,4a,13,14-tetrahydro-1,4a,6,8,13-pentamethoxy-4,12-bis(4-methoxyphenyl)- (9CI)

Common Name: 1H,5H,12H-Furo[3,4-b:2,3-h']bis[1]benzopyran-5-one, 4,4a,13,14-tetrahydro-1,4a,6,8,13-pentamethoxy-4,12-bis(4-methoxyphenyl)- (9CI)

Synonyms: (2S,3S,8S,8aR,14aS)-3,5,8a,10,12-pentamethoxy-2,8-bis(4-methoxyphenyl)-3,4,8,8a-tetrahydro-2H,5H,9H-furo[3,4-b:2,3-h']dichromen-9-one

CAS Registry Number: 142705-62-2

InChI:

InChIKey:

Formula: C37H38O11

Molecular Weight: 658.7

Exact Mass: 658.2414

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 4.72 d 6.1
3 3.44 m
4 2.32 d 4.9
5 4.86 d 2.8
6 5.41 d 2.8
2', 6' 6.88 d 8.8
3', 5' 6.7 d 8.8
2" 5.73 s
6" 6.1 d 2.3
8" 6.17 d 2.3
2''', 6''' 7.21 d 8.8
3''', 5''' 6.84 d 8.8
OCH3 3.85 s
OCH3 3.79 s
OCH3 3.78 s
OCH3 3.77 s
OCH3 3.4 s
OCH3 3.2 s
OCH3 3.17 s

Carbon NMR Peaks

Position PPM
2 78.18
3 76.85
4 26.07
5 75
6 99.84
7 155.98
8 85.58
9 145.73
10 110.27
1' 131.24
2', 6' 127.7
3', 5' 113.82
4' 159.63
2" 88.98
3" 85.37
4" 184.73
5" 163.16
6" 93.73
7" 166.73
8" 94.21
9" 163.69
10" 105.7
1''' 126.14
2''', 6''' 129.94
3''', 5''' 113.65
4''' 160.25
3-OCH3 57.2
OCH3 56.49
OCH3 55.97
OCH3 55.51
OCH3 55.44
OCH3 54.87
5-OCH3 50.32