Common Name: (2S,3S,8S,8aR,14aS)-3,6a,8a,10,12-pentamethoxy-2,8-bis(4-methoxyphenyl)-3,4,8,8a-tetrahydro-2H,6aH,9H-furo[3,4-b:2,3-h']dichromen-9-one
Synonyms:
CAS Registry Number: 142674-74-6
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:
Position | PPM | Peak Type | J (Hz) |
---|---|---|---|
2 | 4.55 | d | 7.3 |
3 | 3.47 | m | |
4 | 2.47 | dd, dd | 17, 5.2 |
2.24 | dd | 17, 7.2 | |
5 | 5.93 | d | 9.9 |
6 | 5.84 | d | 9.9 |
2', 6' | 7.07 | d | 8.8 |
3', 5' | 6.72 | d | 8.8 |
2" | 5.38 | s | |
6" | 5.98 | d | 2.3 |
8" | 6.29 | d | 2.3 |
2''', 6''' | 7.24 | d | 8.8 |
3''', 5''' | 6.82 | d | 8.8 |
OCH3 | 3.86 | s | |
OCH3 | 3.78 | s | |
OCH3 | 3.78 | s | |
OCH3 | 3.76 | s | |
OCH3 | 3.57 | s | |
OCH3 | 3.31 | s | |
OCH3 | 3.11 | s |
Position | PPM |
---|---|
2 | 79.03 |
3 | 76.87 |
4 | 29.77 |
10 | 105.93 |
5 | 121.27 |
6 | 125.88 |
7 | 107.31 |
8 | 91.25 |
9 | 146.52 |
1' | 130.7 |
2', 6' | 128.02 |
3', 5' (may be reversed with 3''', 5''') | 113.58 |
4' (may be reversed with 4''') | 159.64 |
2" | 84.06 |
3" | 91.51 |
4" | 184.42 |
10'' | 105.37 |
5" | 162.96 |
6" | 93.29 |
7" | 166.85 |
8" | 94.25 |
9'' | 164.5 |
1''' | 126.29 |
2''', 6''' | 130.43 |
3''', 5''' (may be reversed with 3', 5') | 113.52 |
4''' (may be reversed with 4') | 160.15 |
3-OCH3 | 57.64 |
OCH3 | 56.51 |
OCH3 | 56.37 |
OCH3 | 55.95 |
OCH3 | 55.5 |
OCH3 | 55.4 |
7-OCH3 | 51.59 |