Masazinoflavanone

Masazinoflavanone

Common Name: Masazinoflavanone

Synonyms: 4H-​1-​Benzopyran-​4-​one, 6-​[[(2R)​-​3,​4-​dihydro-​5-​hydroxy-​2-​(4-​hydroxyphenyl)​-​4-​oxo-​2H-​1-​benzopyran-​7-​yl]​oxy]​-​2,​3-​dihydro-​5,​7-​dihydroxy-​2-​(4-​hydroxyphenyl)​-​, (2R)​-

CAS Registry Number: 878004-04-7

InChI:

InChIKey:

Formula: C30H22O10

Molecular Weight: 542.496

Exact Mass: 542.1213

NMR Solvent: CD3OD

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

Calibration: Residual solvents were used as internal standards.

NMR references: Mahjoub, M., Ammar, S., Mighri, Z. (2005). A new biflavonoid and an isobiflavonoid from Rhus tripartitum. Nat. Prod. Res. 19, 723-729.

Species: Rhus tripartitum - Mahjoub, M., Ammar, S., Mighri, Z. (2005). A new biflavonoid and an isobiflavonoid from Rhus tripartitum. Nat. Prod. Res. 19, 723-729.

Notes:

Proton NMR Peaks

Position PPM Peak Type J (Hz)
2 5.28 dd 13.5, 6.3
3a 3.04 dd 3.5, 13.5
3b 2.63 dd 3.5, 6.3
8 5.91 s
2' 7.36 d 8.4
3' 6.93 d 8.7
5' 6.93 d 8.7
6' 7.36 d 8.4
2" 5.33 dd 13.5, 6.3
3"a 3.04 dd 3.5, 13.5
3"b 2.63 dd 3.5, 6.3
6" 6.1 s
8" 5.9 s
2''' 7.31 d 8.4
3''' 6.84 d 8.7
5''' 6.84 d 8.7
6''' 7.31 d 8.4

Carbon NMR Peaks

Position PPM
2 81.9
3 46.1
4 199.1
5 158.5
6 126.6
7 170
8 98.6
9 166.3
10 105.4
1' 135
2' 130.8
3' 118.1
4' 161.5
5' 118.1
6' 130.8
2" 82.5
3" 46.1
4" 200
5" 166.9
6" 99.5
7" 162.8
8" 98.8
9" 163
10" 105.6
1''' 132.2
2''' 131
3''' 115.7
4''' 160.7
5''' 115.7
6''' 131