Drug – bio-affecting and body treating compositions – Designated organic active ingredient containing – Having -c- – wherein x is chalcogen – bonded directly to...
Reexamination Certificate
2001-08-03
2002-09-10
Robinson, Allen J. (Department: 1616)
Drug, bio-affecting and body treating compositions
Designated organic active ingredient containing
Having -c-, wherein x is chalcogen, bonded directly to...
Reexamination Certificate
active
06448289
ABSTRACT:
FIELD OF THE INVENTION
The present invention relates to a method for repelling arthropods which comprise using 4-hydroxy-6-methyl-3-(4-methylpentanoyl)-2-pyrone as an active ingredient.
Background Arts
Hitherto, repellents those are directly applied to skin or clothes have been utilized for protecting humans or animals from blood-sucking of mosquitoes, flies, acarina and so on. Further, repellents those are applied to specific areas are also utilized for preventing unpleasant arthropods such as centipedes and pill bugs and insanitary insects such as cockroaches from getting indoors.
N,N-diethyl-m-toluamide (hereinafter, referred to as DEET) is mainly used as a repellent for blood-sucking arthropods such as mosquitoes, stable flies and a kind of blood-sucking mite (
Ornithonyssus bacoti
) and insanitary or unpleasant flying insects such as houseflies. As a cockroach repellent, 2-(octylthio)ethanol (MGK-R874: hereinafter, referred to as MGK874) and so on are used. However, these repellents may be effective for only small kinds of arthropods, or the effectiveness is insufficient at rapid effect or long-term effect.
On the other hand, 4-hydroxy-6-methyl-3-(4-methylpentanoyl)-2-pyrone of formula:
is known as an acidic compound in patchouli oil [Phytochemistry, vol. 14, pp. 2712-2713 (1975)].
SUMMARY OF THE INVENTION
The present invention provides a new use of 4-hydroxy-6-methyl-3-(4-methylpentanoyl)-2-pyrone (hereinafter, referred to as Compound [A]), that is, the present invention is a method for repelling arthropods which comprises applying an effective amount of Compound [A] to a place where it is desired to repel arthropods.
REFERENCES:
patent: 0 841 063 (1998-05-01), None
patent: 50-24436 (1975-03-01), None
patent: 51-19126 (1976-02-01), None
patent: 7-126110 (1995-05-01), None
patent: 10-130114 (1998-05-01), None
patent: 88/10258 (1988-12-01), None
D. Rijke et al., Acidic Components in Essential Oils of Costus Root, Patchouli and Olibanum, Phytochemistry, vol. 17, (1978), pp. 1664-1666.
S. Nakahara et al., “Acidic Compounds in Patchouli Oil”, Phytochemistry, vol. 14, (1978), 2712-2713.
Kubota Shunichi
Shono Yoshinori
Robinson Allen J.
Sughrue & Mion, PLLC
Sumitomo Chemical Co,. Ltd.
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