Limonoids are phytochemicals, abundant in sweet or sour-scented, citrus fruit and other plants of the families cucurbitaceae Rutaceae and Meliaceae. Certain limonoids are antifeedants such as azadirachtin from the neem tree.
Chemically, the limonoids consist of variations of the furanolactone core structure. The prototypical structure consists of four six-membered rings and a furan ring. Limonoids are classed as tetranortriterpenes.
- Amit Roy and Shailendra Saraf (2006). "Limonoids: Overview of Significant Bioactive Triterpenes Distributed in Plants Kingdom". Biol. Pharm. Bull. 29 (2): 191–201. doi:10.1248/bpb.29.191. PMID 16462017.
- Donald E.Champagne, Opender Koul, Murray B. Isman, Geoffrey G. E.Scudder, G. H. Neil Towers. "Biological activity of limonoids from the rutales". Phytochemistry. 31: 377–394. doi:10.1016/0031-9422(92)90003-9.