Insect antifeedants from Munronia henryi: structure of munroniamide.

  title={Insect antifeedants from Munronia henryi: structure of munroniamide.},
  author={Shuhua Qi and Da-gang Wu and Li Chen and Yun-bao Ma and Xiao-Dong Luo},
  journal={Journal of agricultural and food chemistry},
  volume={51 24},
A novel A,B-seco-tetranortriterpenoid lactam, named munroniamide (1), along with three known ceramides (2-4), was isolated from the methanolic extract of the whole bodies of Munronia henryi. The structure of 1 was established using spectroscopic methods. Compound 2 exhibited significant antifeeding activity, and 1 exhibited moderate activity, whereas 3 and 4 showed negative activity against Pieris brassicae L. 
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