Mass spectral characterization of fatty acid amides from alfalfa trichomes and their deterrence against the potato leafhopper

N-(3-methylbutyl)amides and N-(2-methylpropyl)amides of C14 through C18 fatty acids were identified from glandular trichomes of the alfalfa genotype Medicago sativa G98A., and synthetic representatives of the amides were tested for bioactivity against the potato leafhopper, Empoasca fabae.