Chamaeflavone A

Chamaeflavone A

Common Name: Chamaeflavone A

Synonyms:

CAS Registry Number: 1431536-60-5

InChI:

InChIKey:

Formula: C32H26O10

Molecular Weight: 570.55

Exact Mass: 570.1526

NMR Solvent: CDCl3

MHz: 400 (1H), 100 (13C)

Calibration: TMS

NMR references: Asada, Y., Sukemori, A., Watanabe, T., Malla, K., Yoshikawa, T., Li, W., Kuange, X., Koike, K., Chen, C., Akiyama, T., Qian, K., Nakagawa-Goto, K., Morris-Natschke, S., Lu, Y., Lee, K. (2013) J. Nat. Prod. 76, 852-857.

Species: Stellera chamaejasme - Asada, Y., Sukemori, A., Watanabe, T., Malla, K., Yoshikawa, T., Li, W., Kuange, X., Koike, K., Chen, C., Akiyama, T., Qian, K., Nakagawa-Goto, K., Morris-Natschke, S., Lu, Y., Lee, K. (2013) J. Nat. Prod. 76, 852-857.

Notes:

Proton NMR Peaks

Position PPM Peak Type J (Hz)
2 (may be interchanged with 2") 5.93 d 12
3 2.82 dd 12, 1.5
6 5.95 d 2
8 6.06 d 2
2', 6' 7.04 d 8
3', 5' 6.87 d 8
7-OCH3 3.77 s
4'-OCH3 3.85 s
2" (may be interchanged with 2) 5.92 d 12
3" 2.8 dd 12, 1.5
6" 5.98 d 2
8" 5.86 d 2
2''', 6''' 6.98 d 8
3''', 5''' 6.8 d 8
5,5"-OH 11.89 d 14.5

Carbon NMR Peaks

Position PPM
2 83.4
3 49.7
4 196.5
5 164.3
6 94.1
7 167.9
8 95.2
9 (may be interchanged with 9") 162.6
10 (may be interchanged with 10") 103.2
1' 128.5
2', 6' 129.2
3', 5' 114.3
4' 160.4
7-OCH3 55.7
4'-OCH3 55.4
2" 83.4
3" 49.7
6" 96.7
7" 164.1
8" 95.3
9" (may be interchanged with 9) 162.9
10" (may be interchanged with 10) 103.1
1''' 128.7
2''', 6''' 129.4
3''', 5''' 115.7
4''' 156.5