Chemical constituents and insecticidal activity from fruits extracts of Trichilia elegans and T. catigua (Meliaceae).
Phytochemical investigation of the fruits extracts of Trichilia elegans and T. catigua (Meliaceae) has led to the identification of the limonoids 11β-acetoxyobacunone, cedrelone, methylangolensate and epimeric mixture of photogedunin, besides known coumarins (scoparone, scopoletin and umbeliferone) and the steroids stigmasterol, β-sitosterol, sitostenone and campesterol. The structures of the compounds were proposed by spectroscopic analysis and compared to literature data. An evaluation of the insecticidal activity of the fruit extracts of Trichilia spp. was conducted and the extracts of T. elegans had strong insecticidal activity and the extracts of T. catigua showed moderate larval mortality on Spodoptera frugiperda.