Japan Tobacco Inc.

The Japan Tobacco Salt Public Corporation

Tatsuji Chuman

Masahiro Kono

Kenji Mori

Masataka Mori

Mikio Ono

Kunio Kato

Takane Fujimori

Kazuko Shimazaki

Shigefumi Kuwahara

Kentaro Okada

Periplanone-B analogue of (4E, 8R, 9R, 10R)-8,9-epoxy-5-methyl-10,10-methylene-oxy-4-cyclodecen-1-one, suitable as cockroach attractant can be prepared by reacting 6-methyl-2,6-cyclodecadien-1-one with a silylating reagent under the presence of a basic catalyst to form a silyldienol ether, reacting the resultant ether with an organic peracid to obtain (2Z, 6E)-10-hydroxy-6-methyl-2,6-cyclodecadien-1-one, reacting the resultant product with a peroxide under the presence of a basic catalyst after protecting hydroxy groups thereof with protection groups to obtain an epoxide, reacting the epoxide with chloromethyl lithium or dimethyl sulfonium methylide thereby introducing a spiroepoxy group and then removing the protection groups, to obtain (1S, 4E, 8R, 9R, 10S)-8,9-epoxy-5-methyl-10,10-methyleneoxy-4-cyclodecen-1-ol and, further, oxidizing the resultant product with a chromic acid type or dimethyl sulfoxide type oxidizing agents.

Periplanone-B analogues as well as cockroach attractant

An attractant having attraction activity for to Tribolium confusum J., which contains 2,6-dimethyl-1-octanol as a component exhibiting an attraction activity. 2,6-dimethyl-octanol can be diluted with an appropriated solvent, or carried by an appropriate solid-phase carrier in the form of tablets. The attactant can be effectively used in lure trapping.

Method of attracting Tribolium confusum J. using 2,6-dimethyl-1-octanol

According to the present invention, an attractant that possesses attraction effects with respect to Tribolium castaneum Herbst and moreover, is a stable compound for which the effectiveness will be continuous, is provided. That is, the present invention is 2,6-dimethyl octylformate and an atrractant of Tribolium castaneum Herbst which is formed from relevant chemical compounds.

Method of attracting Tribolium castaneum Herbst with 2,6-dimethyl-octly

A novel compound, 4,6-dimethyl-7-keto-nonan-3-ol is extracted from female imagoes of cigarette beetle. This novel compound is the sex pheromone of cigarette beetle and has sex attracting activity to male imagoes. A sex attracting composition comprises the novel compound and a solid carrier. The compound may be impregnated or adsorbed in the carrier.

4-6-Dimethyl-7-keto-nonan-3-ol and sex attractant comprising the same

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Yokohama, Japan

Tatsuji Chuman