| 摘要 |
PROBLEM TO BE SOLVED: To obtain a new compound which possesses potent insect pest repellent activity and is useful as an insect pest repellent for Anopheles mosquitoes, Aedes such as Aedes aegypti, Aedes albopictus, etc., Culex such as Culex tritaeniorhynchus or Culex pipiens pallens and blood-sucking insect pests such as gnat, sand fly, Ceratopogonidae Malloch, etc. SOLUTION: This diol compound expressed by the formula is obtained by ring-opening 3α,4α-carane epoxide in an aqueous solution of an alkali such as sodium hydroxide, potassium hydroxide, etc., under the condition of 10-18kg/cm<2> at 160-200 deg.C in the presence of nickel followed by purification by means of column chromatography. When the compound is utilized as an insect pest repellent, the active ingredient itself is applied to skin or the active ingredient can be used as the composition obtained by formulating it with an appropriate support and, when necessary, adding other insect pest repellents, synergists, antioxidants and other additives to it. The composition is prepared in forms of resolvents such as lotion, aerosol, etc., and creams to utilize.
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