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 and mosquitos. Tetrahydronootkatone and 1,10­dihydronootkatone were shown to effectively repel termit s at concentrations as low as 2 µg/ml and 12.5 µg/ml, respectively. Tetrahydronootkatone was shown to repel mosquitos at a concentration of 5%. Tetrahydronootkatone is an effectiv repellent of termites either by itself or as an addition to other substrates, including mulches i ade from wood products or other cellulose-containing material, Tetrahydronootkatone or 1, 0-dihydronootkatone can be used to protect construction wood from attack by Formosan subte anean termites, either alone or used in combination with other compounds known to repel termites. It is also believed that these compounds will prove effective in repelling ants, ticks, and cockroaches. These derivatives. of nootkatone are non-toxic to humans and other mammals and environmentally safe.