Repellent from Traditional Chinese Medicine, Periploca sepium Bunge

Abstract

By using a new bioassay-guided method, 2-hydroxy-4-methoxybenzaldehyde isolated from the root bark of Periploca sepium, a traditional Chinese medicine, showed repellent activity against the olive weevil (Dyscerus perforatus) at 62.5, 125, 250 and 500 μg/disc, respectively. In addition, it also exhibited antinematodal activity against Bursaphelenchus xylophilus at a minimum effective dose of 200 μg/ball. The three related compounds obtained were also evaluated for the above-mentioned bioactivities. © 2007, Verlag der Zeitschrift für Naturforschung. All rights reserved.