Saiyutone A

Saiyutone A

Common Name: Saiyutone A

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

CAS Registry Number: 1318028-98-6

InChI:

InChIKey:

Formula: C34H24O9

Molecular Weight: 576.557

Exact Mass: 576.142

NMR Solvent: CDCl3

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

Calibration: TMS

NMR references: Rittiwong, T., Mutarapat, T., Ponglimanont, C., Mahabusarakam, W., Chakthong, S. (2011). Saiyutones A-D: four new unusual biflavones from Desmos chinensis. Tetrahedron 67, 5444-5449.

Species: Desmos chinensis - Rittiwong, T., Mutarapat, T., Ponglimanont, C., Mahabusarakam, W., Chakthong, S. (2011). Saiyutones A-D: four new unusual biflavones from Desmos chinensis. Tetrahedron 67, 5444-5449.

Notes:

Proton NMR Peaks

Position PPM Peak Type J (Hz)
α 4.01 s
2', 6' 7.71 dd 7.2, 1.8
3', 5' 7.65 m
4' 7.61 m
3" 6.58 s
2''', 6''' 7.89 dd 7.2, 1.7
3''', 5''' 7.54 m
4''' 7.51 m
5-OH 13.16 s
6-CH3 2.12 s
7-OH 13.06 s
8-CHO 10.28 s
5"-OH 12.34 s
7"-OH 10.04 s
8"-CH3 2.39 s

Carbon NMR Peaks

Position PPM
2 165.1
3 119.3
4 182.9
5 164.7
6 108.9
7 168
8 102.3
9 156.9
10 103
α 19.6
1' 132.5
2', 6' 129.2
3', 5' 128.7
4' 131.1
2" 163.4
3" 105.1
4" 182.7
5" 158
6" 108.6
7" 160.1
8" 104.6
9" 154
10" 104.7
1''' 131.7
2''', 6''' 126.2
3''', 5''' 129.1
4''' 131.7
6-CH3 6.4
8-CHO 189.8
8"-CH3 8.3