Dulcisbiflavonoid A

Dulcisbiflavonoid A

Common Name: Dulcisbiflavonoid A

Synonyms: 4H-​1-​Benzopyran-​4-​one, 8-​[5-​(5,​7-​dihydroxy-​4-​oxo-​4H- ​1-​benzopyran-​2-​yl)​-​2-​hydroxy-​3-​(3-​methyl-​2-​buten-​1-​yl)​ phenyl]​-​5,​7-​dihydroxy-​2-​(4-​hydroxyphenyl)​-​6-​(3-​methyl-​2-​ buten-​1-​yl)​-

CAS Registry Number: 1673511-84-6

InChI:

InChIKey:

Formula: C40H34O10

Molecular Weight: 674.702

Exact Mass: 674.2152

NMR Solvent: DMSO-d6

MHz: 300 (1H), 75 (13C)

Calibration: TMS

NMR references: Saelee, A., Phongpaichit, S., Mahabusarakam, W. (2015). A new prenylated biflavonoid from the leaves of Garcinia dulcis. Nat. Prod. Res. 29, 1884-1888.

Species: Garcinia dulcis - Saelee, A., Phongpaichit, S., Mahabusarakam, W. (2015). A new prenylated biflavonoid from the leaves of Garcinia dulcis. Nat. Prod. Res. 29, 1884-1888.

Notes:

Proton NMR Peaks

Position PPM Peak Type J (Hz)
3 6.82 s
6 6.16 d 1.8
8 6.43 d 1.8
2' 7.87 d 2.1
6' 7.76 d 2.1
7' 3.48 d 7.2
8' 5.42 t 7.2
10', 11', 15" 1.74 s
3" 6.77 s
11'' 3.35 d 6.6
12'' 5.23 t 6.6
13'' 1.63 s
2''', 6''' 7.52 d 8.7
3''', 5''' 6.7 d 8.7
5-OH 12.96 s
5"-OH 13.38 s

Carbon NMR Peaks

Position PPM
2 164.4
3 103.5
4 182.1
10, 8" 104.2
5, 7" 161.9
6 99.3
7 164.5
8 94.5
9 157.8
1' 121.6
2' 128
3' 130.1
4', 5" 158.4
5' 120.1
6' 129.8
7' 29.3
8' 122.8
9' 132.5
10' 18.3
11' 26.1
2" 163.8
3" 102.9
4" 182.7
10" 104.4
6" 112
9" 153.3
11'' 21.9
12'' 122.9
13'' 131.1
14'' 26
15'' 18.2
1''' 121.9
2''', 6''' 128.6
3''', 5''' 116.2
4''' 161.4