3"-hydroxyamentoflavone and its 7-O-methyl ether, two new biflavonoids from Aristolochia contorta.
Two new biflavonoids, 3"-hydroxyamentoflavone-7-O-methyl ether (1) and 3"-hydroxyamentoflavone (2), were isolated from the fruits of Aristolochia contorta Bge. Their structures were elucidated by HR-ESI-MS, 1D-, and 2D-NMR spectroscopy.
Chen
Ye-Gao
YG
Department of Chemistry, Hainan Normal University, Haikou 571158, China. ygchen48@hotmail.com
Yu
Li-Li
LL
Huang
Rong
R
Liu
Jia-Chuan
JC
Lv
Yu-Ping
YP
Zhao
Yong
Y
D030022:Aristolochia / Q000737:chemistry*; D044946:Biflavonoids / Q000494:pharmacology*; D005638:Fruit / Q000737:chemistry; D007202:Indicators and Reagents; D013058:Mass Spectrometry; D021241:Spectrometry, Mass, Electrospray Ionization; D016339:Spectrometry, Mass, Fast Atom Bombardment
C507422:3''-hydroxyamentoflavone; C507423:3''-hydroxyamentoflavone-7-O-methyl ether; D044946:Biflavonoids; D007202:Indicators and Reagents