Phytochemical profile and insecticidal activity of (Asparagaceae) against adults of (Anobiidae).

Chemical and spectroscopic investigation of the bulbs of resulted in the isolation of one known flavonol (), never isolated from this plant species, and of three previously described steroidal saponins (), but whose configuration at their stereogenic centres was not clearly determined. By mean of H NMR, C NMR, nuclear overhauser effects (NOE) and two-dimensional NMR spectra the full stereochemical structures of compounds were proved and all the H and C signals were assigned. Furthermore, the methanol and butanol extracts of were tested against adults of beetles. Despite the non-significant results regarding the repellent activity and contact toxicity, promising results were obtained from the feeding tests.