Jianxiao Shi, Zhixuan Li, Teruhiko Nitoda, Minoru Izumi, Hiroshi Kanzakia, Naomichi Baba, Kazuyoshi Kawazu, Shuhei Nakajima
Graduate School of Natural Science and Technology, Department of Applied Bioscience and Biotechnology, Laboratory of Natural Products Chemistry, Faculty of Agriculture, Okayama University, Tsushima naka 3-1-1, Okayama 700-8530, Japan.
Zeitschrift für Naturforschung. C, Journal of biosciences 2008 Jan-FebUnder the bioassay-guided method, two diterpenes, 3-O-(2",3"-dimethylbutanoyl)-13-O-dodecanoylingenol (1) and 3-O-(2",3"-dimethylbutanoyl)-13-O-decanoylingenol (2) isolated from Euphorbia kansui, showed a pronounced antinematodal activity against the nematode Bursaphelenchus xylophilus at the same minimum effective dose (MED) of 5 microg per cotton ball and still displayed antinematodal activity at a dose of 2.5 microg per cotton ball. Compounds 3-6 were obtained, and the structure of the new compound 6 was elucidated based on 1D- and 2D-NMR analyses and physicochemical data. Preliminary structure-biological activity relationships of ingenane-type compounds were deduced.
Jianxiao Shi, Zhixuan Li, Teruhiko Nitoda, Minoru Izumi, Hiroshi Kanzakia, Naomichi Baba, Kazuyoshi Kawazu, Shuhei Nakajima. Antinematodal activities of ingenane diterpenes from Euphorbia kansui and their derivatives against the pine wood nematode (Bursaphelenchus xylophilus). Zeitschrift für Naturforschung. C, Journal of biosciences. 2008 Jan-Feb;63(1-2):59-65
PMID: 18386489
View Full Text