DIHYDRONOOTKATONE AND TETRAHYDRONOOTAKATONE AS REPELLENTS TO ARTHROPODS

摘要

Two derivatives of nootkatone, tetrahydronootkatone and 1, 1 0-dihydronootkatone, are surprisingly effective as repellents of termites andmosquitos. Tetrahydronootkatone and 1,10~dihydronootkatone were shown toeffectively repel termit s at concentrations as low as 2 ~g/ml and 12.5 ~g/ml,respectively. Tetrahydronootkatone was shown to repel mosquitos at aconcentration of 5%. Tetrahydronootkatone is an effectiv repellent of termiteseither by itself or as an addition to other substrates, including mulches iade from wood products or other cellulose-containing material,Tetrahydronootkatone or 1, 0-dihydronootkatone can be used to protectconstruction wood from attack by Formosan subte anean termites, either aloneor used in combination with other compounds known to repel termites. It isalso believed that these compounds will prove effective in repelling ants,ticks, and cockroaches. These derivatives. of nootkatone are non-toxic tohumans and other mammals and environmentally safe.