Isolation, Purification and Elucidation of Stigmasterol and β-Sitosterol Glucosides from the Stems of Solenostemma argel Grown in Sudan and their Application as Insecticides

Two new compounds were isolated from the chloroform extract fraction of stems of Solenostemma argel, purified by column chromatography and elucidated by phytochemical and spectroscopic methods as Stigmasterol and β-sitosterol glucoside. Chloroform had the highest insecticide activity against the growth of the third larval instar of Tribolium castaneum used as a test insect, when it was compared with n-hexane, ethyl acetate, n-butanol and water extracts.