title: 3"-hydroxyamentoflavone and its 7-O-methyl ether, two new biflavonoids from Aristolochia contorta.
abstract: 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.
authors.affiliation: Department of Chemistry, Hainan Normal University, Haikou 571158, China. ygchen48@hotmail.com
authors.forename: Ye-Gao
authors.initials: YG
authors.lastname: Chen
authors.forename: Li-Li
authors.initials: LL
authors.lastname: Yu
authors.forename: Rong
authors.initials: R
authors.lastname: Huang
authors.forename: Jia-Chuan
authors.initials: JC
authors.lastname: Liu
authors.forename: Yu-Ping
authors.initials: YP
authors.lastname: Lv
authors.forename: Yong
authors.initials: Y
authors.lastname: Zhao
mesh_terms: 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
chemical_list: C507422:3''-hydroxyamentoflavone; C507423:3''-hydroxyamentoflavone-7-O-methyl ether; D044946:Biflavonoids; D007202:Indicators and Reagents