Two new insecticidal sesquiterpene esters from Euonymus japonicus

  • Nat Prod Res. 2009;23(15):1402-7. doi: 10.1080/14786410902726282.
Qidong Zhang  1 ,  Zhiqing Ji ,  Mingan Wang ,  Wenjun Wu
Affiliations
  • 1. Department of Plant Protection, Northwestern Agricultural University, Yangling, Shaanxi 712100, People's Republic of China.
PMID: 19809912 DOI: 10.1080/14786410902726282
Abstract

Two new insecticidal sesquiterpene esters with a beta-dihydroagarofuran sesquiterpene skeleton, ejaponine A (1) and ejaponine B (2), and two known compounds, 3 and 4, were isolated from the EtOAc extract of the root bark of Euonymus japonicus Thunb. by bioassay-guided fractionation. Their chemical structures were elucidated mainly by analysis of MS and NMR spectral data. The LD50 values of ejaponine A (1), ejaponine B (2), 3 and 4 showed against Mythimna separata were 89.2, 98.6, 181.4 and 109.2 microg g(-1), respectively.

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