(2S)-2,3-Dihydro-4'''-O-methyl amentoflavone

(2S)-2,3-Dihydro-4'''-O-methyl amentoflavone

Common Name: (2S)-2,3-Dihydro-4'''-O-methyl amentoflavone

Synonyms: 4H-​1-​Benzopyran-​4-​one, 2-​[3-​[5,​7-​dihydroxy-​2-​(4-​methoxyphenyl)​-​4-​oxo-​4H-​1-​benzopyran-​8-​yl]​-​4-​hydroxyphenyl]​-​2,​3-​dihydro-​5,​7-​dihydroxy-​, (2S)​-

CAS Registry Number: 852875-96-8

InChI:

InChIKey:

Formula: C31H22O10

Molecular Weight: 554.507

Exact Mass: 554.1213

NMR Solvent: acetone-d6

MHz: 200.0

Calibration: not indicated

NMR references: Das, B., Mahender, G., Rao, Y., Prabhakar, A., Jagadeesh, B. (2005). Biflavonoids from Cycas beddomei. Chem. Pharm. Bull. 53, 135-136.

Species: Cycas beddomei - Das, B., Mahender, G., Rao, Y., Prabhakar, A., Jagadeesh, B. (2005). Biflavonoids from Cycas beddomei. Chem. Pharm. Bull. 53, 135-136.

Notes:

Proton NMR Peaks

Position PPM Peak Type J (Hz)
13.12 s
12.18 s
3.82 s
6 5.9 d 2
8 5.98 d 2
6'' 6.33 s
2 5.44 dd 13, 3
3a 3.21 dd 17, 13
3b 2.76 dd 17, 3
3'' 6.59 s
2' 7.62 d 2
5' 7.05 d 8
6' 7.42 dd 8, 2
2''',6''' 7.77 d 8
3''',5''' 6.95 d 8

Carbon NMR Peaks

Position PPM
2 80.8
3 42.3
4 196.6
5 168
6 98.4
7 168.2
8 98
9 164.5
10 102.1
1' 128.6
2' 132.1
3' 121.2
4' 157.5
5' 118.8
6' 127.3
2" 163.1
3" 103.2
4" 183.4
5" 161.6
6" 100.4
7" 163.7
8" 105.9
9" 158.8
10" 103.4
1''' 124
2''', 6''' 128.2
3''', 5''' 114.4
4''' 162.5
OCH3 56.7