Pesticidal efficacy of 2-acetoxy caesaldekarin E and oil from the seeds of Caesalpinia bonducella.

Cassane furanoditerpenoids were isolated along with oil from n-hexane (1-3) and chloroform (4-8) extracts from the seeds of Caesalpinia bonducella. These compounds were identified by means of comparison of spectroscopic data with literature data. The insecticidal activity of the major compound, 2-acetoxy caesaldekarin E (5), oil and three formulations of both were evaluated against the fall armyworm. Formulation of seed oil and compound (5) in 1:1 exhibited a potent insecticidal activity (LC50 = 255.31 ppm) than compound 5 and seed oil against fall armyworm, while compound 5 showed a higher activity (LC50 =549.69 ppm) than oil. Our study suggests that formulations of 5 and oil could be beneficial to control S. frugiperda.