pyranoamentoflavone

pyranoamentoflavone

Common Name: pyranoamentoflavone

Synonyms: 2H,​6H-​Benzo[1,​2-​b:5,​4-​b']​dipyran-​6-​one, 10-​[5-​(5,​7-​dihydroxy-​4-​oxo-​4H-​1-​benzopyran-​2-​yl)​-​2-​hydroxyphenyl]​-​5-​hydroxy-​8-​(4-​hydroxyphenyl)​-​2,​2-​dimethyl-

CAS Registry Number: 145701-10-6

InChI:

InChIKey:

Formula: C35H24O10

Molecular Weight: 604.567

Exact Mass: 604.137

NMR Solvent: C5D5N

MHz: 250 (1H), 75 (13C)

Calibration: not indicated

NMR references: Goh, S., Jantan, I., Waterman, P. (1992). Neoflavonoid and Biflavonoid Constituents of Calophyllum inophylloide. J. Nat. Prod. 55, 1415-1420.

Species: Calophyllum inophylloide - Goh, S., Jantan, I., Waterman, P. (1992). Neoflavonoid and Biflavonoid Constituents of Calophyllum inophylloide. J. Nat. Prod. 55, 1415-1420.

Notes: 13C assignments made by COSY, NOESY, HMQC, and HMBC 2D NMR methods

Proton NMR Peaks

Position PPM Peak Type J (Hz)
3 6.98 s
5-OH 13.78 s
6 6.77 d 2.1
8 6.84 d 2.1
2' 8.4 d 2.4
5' 7.43 d 8.6
6' 7.94 dd 8.6, 2.4
3" 7.04 s
5"-OH 14.2 s
11" 7.01 d 10
12" 5.68 d 10
14"-CH3 1.5 s
15"-CH3 1.46 s
2''', 6''' 7.93 d 8.8
3''', 5''' 7.17 d 8.8

Carbon NMR Peaks

Position PPM
2 165.1
3 104.2
4 182.2
4a 105.5
5 163.7
6 100.6
7 166.4
8 95.3
8a 159.1
1' 122.8
2' 132.9
3' 121.2
4' 161.6
5' 117.7
6' 128.9
2" 165.3
3" 104.5
4" 182.7
10'' 106.2
5" 155.4
6'' 106.4
11'' 116.5
12'' 129.1
13'' 79.1
7'' 157.8
8'' 106.4
9'' 157.1
14'' 28.6
15'' 29
1''' 122.8
2''' 129.4
3''' 117.4
4''' 163.4
5''' 117.4
6''' 129.4