Podocarpusflavone A

Podocarpusflavone A

Common Name: Podocarpusflavone A

Synonyms: 4'''-Monomethylamentoflavone

CAS Registry Number: 22136-74-9

InChI:

InChIKey:

Formula: C31H20O10

Molecular Weight: 552.491

Exact Mass: 552.1056

NMR Solvent: CD3OD and pyridine-d5

MHz: 400.0

Calibration: not indicated

NMR references: Yeh, P., Shieh, Y., Hsu, L., Kuo, L., Lin, J., Liaw, C., Kuo, Y. (2012). Naturally Occurring Cytotoxic [3' → 8"]-Biflavonoids from Podocarpus nakaii. J. Tradit. Complement Med. 2, 220-226.

Species: Podocarpus nakii

Notes: NMR data and species from Yeh et al. Other literature for NMR data: Bahia, M., dos Santos, J., David, J., David, J. (2005). Biflavonoids and other Phenolics from Caesalpinia pyramidalis (Fabaceae). J. Braz. Chem. Soc. 16, 1402-1405.; Carbonezi, C., Hamerski, L., Gunatilaka, A., Cavalheiro, A., Castro-Gamboa, I., Silva, D., Furlan, M., Young, M., Lopes, M., Bolzani, V. (2007). Bioactive flavone dimers from Ouratea multiflora (Ochnaceae). Braz. J. Pharmacogn. 17, 319-324.; Markham, K., Sheppard, C., Geiger, H. (1987). 13C NMR Studies of some naturally occurring Amentoflavone and Hinokiflavone Biflavonoids. Phytochemistry 26, 3335-3337.; Suarez, A., Diaz M., B. Monache, F., Compagnone, R. (2003). Biflavonoids from Podocalyx loranthoides. Fitoterapia 74, 473-475.; Wollenweber, E., Kraut, L., Mues, R. (1998). External Accumulation of Biflavonoids on Gymnosperm Leaves. Z. Naturforsch. 53c, 946-950.

Proton NMR Peaks

Position PPM Peak Type J (Hz)
3 7.03 s
6 6.72 d 2
8 6.8 d 2.4
2' 8.47 d 2
5' 7.5 d 8.4
6' 7.96 dd 8.4, 2.4
3" 6.93 s
6" 6.91 s
2''' 7.84 d 8.8
3''' 6.95 d 8.8
5''' 6.95 d 8.8
6''' 7.84 d 8.5
4'''-OCH3 3.59 s

Carbon NMR Peaks

Position PPM
2 164.5
3 104.7
4 182.6
5 162.8
6 99.8
7 165.6
8 94.7
9 158.3
10 104.8
1' 121.5
2' 132.4
3' 122.2
4' 161.1
5' 117
6' 128.1
2" 163.9
3" 104
4" 182.9
5" 162.1
6" 99.7
7" 163.7
8" 103.9
9" 155.6
10" 105.2
1''' 121.5
2''' 128.2
3''' 114.7
4''' 162.6
5''' 114.7
6''' 128.2
4'''-OCH3 55.2