Insecticidal heterolignans—Tubuline polymerization inhibitors with activity against chewing pests
作者:Jens Frackenpohl、Isabelle Adelt、Horst Antonicek、Christian Arnold、Patricia Behrmann、Nicole Blaha、Jutta Böhmer、Oliver Gutbrod、Roman Hanke、Sabine Hohmann、Marc van Houtdreve、Peter Lösel、Olga Malsam、Martin Melchers、Valentina Neufert、Elisabeth Peschel、Udo Reckmann、Thomas Schenke、Hans-Peter Thiesen、Robert Velten、Kathrin Vogelsang、Hans-Christoph Weiss
DOI:10.1016/j.bmc.2009.01.042
日期:2009.6
Starting from natural product podophyllotoxin 1 substituted heterolignans were identified with promising insecticidal in vivo activity. The impact of substitution in each segment of the core structure was investigated in a detailed SAR study, and variation of substituents in both aromatic moieties afforded derivatives 5 and 43 with broad insecticidal activity against lepidopteran and coleopteran species. In vitro measurements supported by modeling studies indicate that heterolignans 3-134 act as tubuline polymerization inhibitors interacting with the colchicine-binding site. Insect specific structure-activity effects were observed showing that the insecticidal SAR described herein differs from reported cytotoxicity studies. (C) 2009 Elsevier Ltd. All rights reserved.