Sikokianin A

Sikokianin A

Common Name: Sikokianin A

Synonyms: 4'-O-Demethylchamaejasmenin B

CAS Registry Number: 106293-99-6

InChI:

InChIKey:

Formula: C31H24O10

Molecular Weight: 556.52

Exact Mass: 556.137

NMR Solvent: CD3OD

MHz: not indicated

Calibration: TMS

NMR references: Niwa, M., Jiang, P., Hirata, Y. (1986). Two New C-3/C-3"-Biflavanones from Wikstroemia sikokiana. Chem. Pharm. Bull. 34, 3631-3634.

Species: Wikstroemia sikokiana - Niwa, M., Jiang, P., Hirata, Y. (1986). Two New C-3/C-3"-Biflavanones from Wikstroemia sikokiana. Chem. Pharm. Bull. 34, 3631-3634.

Notes:

Proton NMR Peaks

Position PPM Peak Type J (Hz)
2 (may be reversed with 2") 5.31 d 2
3 (may be reversed with 3") 2.91 d 2
6 (may be reversed with 6") 5.73 d 0.5
8 (may be reversed with 8") 5.86 d 0.5
2', 6' (may be reversed with 2''', 6''') 6.93 d 9
3', 5' (may be reversed with 3''', 5''') 6.63 d 9
4', 4''' 3.82 s
2" (may be reversed with 2) 5.36 d 2
3" (may be reversed with 3) 2.98 d 2
6" (may be reversed with 6) 5.75 d 0.5
8" (may be reversed with 8) 5.88 d 0.5
2''', 6''' (may be reversed with 2', 6') 7.04 d 9
3''', 5''' (may be reversed with 3', 5') 6.77 d 9

Carbon NMR Peaks

Position PPM
2 (may be interchanged with 2") 81.7
3 47.9
4 197.4
5 165
6 96.8
7 168.4
8 95.9
9 164.5
10 103.6
1' 129.3
2' 128.2
3' 114.9
4' 160.6
5' 114.9
6' 128.2
OCH3 55.8
2" (may be interchanged with 2) 81.8
3" 47.9
4" 197.4
5" 165
6" 96.8
7" 168.4
8" 95.9
9" 164.5
10" 103.6
1''' 128.2
2''' 128.2
3''' 116.2
4''' 158
5''' 116.2
6''' 128.2