From Celastrus orbiculatus

Hwang, B.Y. et al.. Antioxidant benzoylated flavan-3-ol glycoside from Celastrus orbiculatus, J. Nat. Prod, 64, 82, 2001. 

Numerous other insect antifeedants have been isolated from a variety of sources. One way to search for these is to look for a plant that would appear to be good food for nearby insects, but that is not eaten. Two compounds that are about as effective as azadirachtin are shown in 11.23.138 Mycotoxins can be as effective as azadirachtin in some cases, as in the following example (11.24).139 It would be instructive to try this technique on some of the highly invasive exotic weeds found in the eastern United States. It is possible that weeds such as kudzu, Lonicera japonica, Alliaria petiolata, and Celastrus orbiculatus, contain antifeedants that might be used on crops in the area where they are pests. Their harvest for this purpose... 

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