3'-Hydroxyamentoflavone and Its 7-O-Methyl Ether, Two New Biflavonoids from Aristolochia contorta

• Published in: Archives of pharmacal research Vol. 28; no. 11; pp. 1233 - 1235
• Main Authors: Chen Ye-Gao, Yu Li-Li, Huang Rang, Liu Jia-Chuan, Lv Yu-Ping, Zhao Yang
• Format: Journal Article
• Language: Korean
• Published: 2005
• Subjects: Aristolochia contorta; Biflavonoids; 3'-Hydroxyamentoflavone; 3'-Hydroxyamentoflavone-7-O-methyl ether

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.