抄録
A biologically monitored fractionation of methanol extract of the fruit of Evodia rutaecarpa led to the isolation of six quinolone alkaloids, evocarpine (1), 1-methyl-2-[(4Z, 7Z)-4, 7-tridecadienyl]-4(1H)-quinolone (2), 1-methyl-2-[(6Z, 9Z)-6, 9-pentadecadienyl]-4(1H)-quinolone (3), 1-methyl-2-undecyl-4(1H)-quinolone (4), dihydroevocarpine (5), 1-methyl-2-pentadecyl-4(1H)-quinolone (6). They showed potent anti-Helicobacter pylori activity with the minimum inhibitory concentration (MIC) value of 10-20 μg/ml. However, they had no effect on Helicobacter pylori urease activity at the concentration of 300 μg/ml.
