JPH05286816A - Termite controlling agent - Google Patents

Abstract

PURPOSE:To obtain the subject agent having easy handleability and processability, usable in a wide application field, having high safety and effective at a low rate of application by using an active component selected from specific triterpenes existing in an extract of Azadirachta indica which is a plant belonging to the family Meliaceae. CONSTITUTION:The objective termite-controlling agent contains one or more substances selected from triterpenes produced by purifying an extract of the seed and fruit of Azadirachta indica, i.e. azadiradione of formula 1, 17- hydroxyazadiradione of formula 2, 17-epiazadiradione of formula 3, epoxyazadiradione of formula 4, gedunin of formula 5, deacetylgedunin of formula 6, salannin of formula 7, deacetylsalannin of formula 8, nimbin of formula 9 and deacetylnimbin of formula 10 as active components. The termite- controlling effect and insecticidal effect can be promoted at a low rate of application by using the above active component in combination with one or more components selected from pyrethroidal insecticide, organic phosphorus insecticide and carbamate insecticide.

Description

Detailed Description of the Invention

[0001]

TECHNICAL FIELD The present invention relates to a termite controlling agent.

[0002]

2. Description of the Related Art In recent years, damage to houses, buildings, warehouses, factories, etc. due to wood pests has been increasing due to changes in the living environment. Especially, the damage caused by termites is not limited to building materials for buildings, furniture,
It covers a wide range of products such as leather / fibers, vinyl products, electric wires / cables, etc. Examples of the agents that have been conventionally used as termite control agents include organic phosphorus-based chlorpyrifos, phoxime, pyridafenthion, etc., naphthalene-based monochloronaphthalene, triazine-based tripropyl isocyanurate, and the like. However,
All of these drugs have problems in safety and residual toxicity, and not only direct damage to sprayers, but accumulation in the environment is a serious social problem. for that reason,
There is a growing need for control agents with high safety and low residual toxicity.

By the way, in India, neem (Azadirachtaindica A. Juss), which is a plant of the genus Asteraceae, has been used as an insecticide and anthelmintic agent for a long time, and its mechanism of action and insects to be anthelmintic are already known. (J. Davi
d Warthen Jr., Proc. Entomol. Soc. Wash. , 91 (3) , pp.
367〜388, (1989) ・ M.Jacobson, ACS Symposium Series
No.296 pp.220~232 (1986)). Azadirachtin, which is the main active ingredient contained in Neem, is known to have the strongest activity among natural products against insects such as grasshoppers, moths and beetles. However, it is known that this azadirachtin itself has no controlling activity against termites (Butterworth and Morgan, J. Insect).
Physiol. , 17 pp. 969-977, (1971)). Therefore, the effect of neem itself on termites was unknown.

As a result of repeated studies to select a natural product having a high termite control effect from among natural products having high safety and low residual toxicity, the present inventors have found that the active ingredient is unknown but the neem extract is high in termite control. The inventors found that it has an effect and filed an application first (Japanese Patent Laid-Open No. 3-41011). However, the neem extract has a peculiar unpleasant odor and a viscous morphology, and since it is colored (brown), it has a problem that it may damage the aesthetics due to the treatment, so that it has a termite control effect. In spite of this, the handling and preparation methods are limited, and the usage is limited to the outside of buildings such as underfloor and soil. Further, it has been pointed out that the treatment with neem extract alone has an excellent termite-controlling effect, but is weaker and slower than existing drugs in terms of insecticidal activity.

Therefore, an object of the present invention is to solve the above problems of neem extract, to be easily handled and prepared, and to be used in a wide range of applications, while being highly safe and having a low dosage. Another object of the present invention is to provide a termite control agent having an excellent control effect. Another object of the present invention is to provide a termite control agent which is safe and also has insecticidal activity by reducing the amount of the insecticide used in combination with a conventionally used termite insecticide. is there.

[0006]

[Means for Solving the Problems] In order to solve the above-mentioned problems, the present inventors purified each component in neem extract and conducted intensive studies on each component. As a result, it was found that the compounds represented by the following formulas (1) to (10) of neem extract are effective components for controlling termites. In addition, one or more of these ingredients and a pyrethroid insecticide,
It has been found that a high termite controlling effect and a high insecticidal effect can be achieved with a low dose by mixing and applying an organophosphorus insecticide or one or more carbamate insecticides, thereby completing the present invention. That is, the present invention provides a termite control agent, preferably a triterpene containing an active ingredient, which comprises one or more substances selected from the group consisting of triterpenes represented by the formulas (1) to (10) as an active ingredient. All or part of the class is selected from the group consisting of formulas (2), (5), (6) and (7), and also in the formulas (1) to (10) Relating to a termite control agent comprising one or more selected from the group consisting of triterpenes represented and a pyrethroid insecticide, one or more selected from the group consisting of organophosphorus insecticides and carbamate insecticides as an active ingredient It is a thing.

[0007]

[Chemical 2]

The triterpenes represented by the formulas (1) to (10) used in the termite controlling agent of the present invention are azajiradione, 17-hydroxyazajiradione and 1
7-Epiaza ziradione, epoxy azajiradione, gejunin, deacetylgejunin, salannin, deacetylsalannin, ninbin, deacetylninbin, which are compounds such as neem, sedane, tusseedan or taiwansendan. It can be easily separated / extracted / purified from plants of the family Meliaceae.

The extraction method of the above-mentioned triterpenes is not particularly limited, and it can be easily extracted by a usual method such as an organic solvent extraction method and a compression extraction method. As the organic solvent used in the extraction by the organic solvent extraction method, alcohols such as methanol, ethanol, propanol, isopropanol, butanol and octanol; polyols such as propylene glycol, ethylene glycol, hexylene glycol and glycerin; methyl ether Ethers such as ethyl ether, propyl ether and isopropyl ether; ketones such as methyl ethyl ketone and acetone; esters such as ethyl acetate; halogenated hydrocarbons such as chloroform and dichloromethane; hexane, isooctane, kerosene, paraffin, benzene, Hydrocarbons such as toluene and xylene, or hydrates thereof may be used, but alcohols such as methanol and ethanol and diglycerides may be used. Halogenated hydrocarbons and hydrate thereof such Rometan are preferred.

The means for purifying the triterpenes after extraction is not particularly limited, and conventional methods such as column chromatography, thin layer chromatography, high performance liquid chromatography, precipitation by recrystallization, and a combination of these methods can be used. Used. Further, the triterpenes used in the termite control agent of the present invention is not limited to using a chemically synthesized product other than the method obtained from the above-mentioned plant, and is appropriately selected in consideration of economical efficiency and safety. can do.

The termite control agent of the present invention is obtained by blending one or more substances of the triterpenes represented by the formulas (1) to (10) obtained above as active ingredients. Although these triterpenes have an excellent termite-controlling action, they have a characteristic that they have weak insecticidal properties. Therefore, depending on various uses, it is not limited to the control of termites, and a sufficient medicinal effect cannot be expected mainly in uses requiring insecticidal properties. However, by adding an active ingredient of the termite controlling agent of the present invention to an existing termite insecticide, it is possible to reduce the amount used while maintaining the insecticidal effect of the existing termite insecticide.
That is, by using such a combination, it is possible to provide a safer termite control agent having less problems such as residual toxicity to the human body and having a termite insecticidal effect. As the insecticide that can be used in combination in the present invention, a pyrethroid insecticide,
Examples include organic phosphorus insecticides and carbamate insecticides.

As the pyrethroid insecticide used in the present invention, (RS) -3-allyl-2-methyl-4-oxocyclopent-2-enyl (±) -cis-trans-chrysansemate (allethrin) is used. ), (RS) -α-cyano-4-fluoro-3-phenoxybenzyl (IR
S) -cis, trans-3- (2,2-dichlorovinyl) -2,2-dimethylcyclopropanecarboxylate (cyfluthrin), (RS) -α-cyano-3-phenoxybenzyl- (Z)-(IRS ) -Cis-3- (2
-Chloro-3,3,3, -trifluoropropenyl)-
2,2-Dimethylcyclopropanecarboxylate (cyhalothrin), (RS) -α-cyano-3-phenoxybenzyl (IRS) -cis, trans-3- (2,2-
Dichlorovinyl) -1,1-dimethylcyclopropanecarboxylate (cypermethrin), (S) -α-cyano-3-phenoxybenzyl (IR) -cis-3-
(2,2-dibromovinyl) -2,2-dimethylcyclopropanecarboxylate (deltamethrin), (R
S) -α-Cyano-3-phenoxybenzyl (RS)-
2- (4-chlorophenyl) -3-methylbutyrate (fenvalerate), (RS) -α-cyano-3-phenoxybenzyl- (S) -2- (4-difluoromethoxyphenyl) -3-methylbutyrate (Fulcitrinate), (RS) -α-cyano-3-phenoxybenzyl-N- (2-chloro-α, α, α, -trifluoro-
p-tolyl) -D-valinate (fulvalinate), 3
-Phenoxybenzyl (IRS) -cis-trans-3
-(2,2-Dichlorovinyl) -2,2-dimethylcyclopropanecarboxylate (permethrin), 3-phenoxybenzyl (±) -cis-trans-chrysansemate (phenothrin), 2- (4-ethoxyphenyl) 2-Methylpropyl-3-phenoxybenzyl ether (ethofenprox), (RS) -α-cyano-3-phenoxybenzyl (RS) -2,2-dichloro-1- (4-ethoxyphenyl) -cyclopropane Carboxylate (cycloprothrin), (S) -α-cyano-3-phenoxybenzyl- (IR) -cis-2,
2-Dimethyl-3-[(RS) -1,2,2,2-tetrabromoethyl] cyclopropanecarboxylate (tralomethrin), 2,3,5,6-tetrafluoro-4
-Methylbenzyl- (Z)-(IRS) -cis-3-
(2-chloro-3,3,3-trifluoroprop-1-
(Enyl) -2,2-dimethylcyclopropanecarboxylate (tefluthrin), 2-methylbiphenyl-3-
Ilmethyl- (Z)-(IRS) -cis-3- (2-chloro-3,3,3-trifluoroprop-1-enyl)
Examples include 2,2-dimethylcyclopropanecarboxylate (bifenthrin).

Examples of organophosphorus insecticides include O, O-diethyl-O-3,5,6-trichloro-2-pyridylphosphorothioate (chloropyrifos), O, O-dimethyl-O-3,5,6-trichloro. 2-Pyridyl phosphorothioate (chloropyrifosmethyl), O, O-dimethyl-O- (3-oxo-2-phenyl-2H-pyridazin-6-yl) phosphorothioate (pyridaphenthione), (2-isopropyl-4-methylpyrimidyl-)
6) -diethylthiophosphate (diazinone),
O, O-dimethyl-O- (3-methyl-4-nitrophenyl) thiophosphate (fenitrothion), O, O
-Dimethyl-O- [3-methyl-4- (methylthio) phenyl] thiophosphate (fenthion), 2,2-
Dichlorovinyl dimethyl phosphate (dichlorvos), 2-chloro-1- (2,4,5-trichlorophenyl) vinyl dimethyl phosphate (tetrachlorovinphos), O, O-diethyl-α-cyanobenzylidene amino-oxyphosphorothioate (phoxime ), O, S
-Dimethyl-N-acetylphosphoramidothioate (acephate), O-ethyl-O- (N-methoxyacetimidoyl) phenylthionophosphate (HI
-8276) and the like.

As the carbamate insecticide, 1-
Naphthyl-N-methylcarbamate (carbaryl), 2
-Secondary butylphenyl-N-methylcarbamate (BPMC), 2-isopropoxyphenyl-N-methylcarbamate (propoxur), 3,5-xylyl-N-methylcarbamate (XMC) and the like. In the present invention, at least one selected from the group consisting of these pyrethroid insecticides, organophosphorus insecticides and carbamate insecticides is used. When using a plurality of insecticides in combination, it is appropriately selected from among the insecticides of a specific system, or the insecticides of each system are used in combination such as a combination of a pyrethroid insecticide and an organophosphorus insecticide. You may.

The termite control agent of the present invention may be added to an existing natural termite control agent for use.
Examples of natural termite control agents include yellowfin extract (Japanese Unexamined Patent Publication No. 1-13007, Japanese Unexamined Patent Publication No. 1-106804) and citrus seed extract (Japanese Unexamined Patent Publication No. 1-83006) that the present inventors previously applied. ) And the like.

In the formulation of the termite controlling agent of the present invention, it is formulated with an appropriate carrier and / or diluent according to a usual formulation. The dosage form of the obtained preparation is also not particularly limited, and for example, a dosage form such as powder, granules, wettable powders, emulsions, oils, aerosols, smokers, etc. can be appropriately selected according to the purpose of use. .. Preparation of each of these dosage forms can be carried out by a usual method. For example powder
Solid agents such as granules are prepared by mixing one or more of the triterpenes represented by the above formulas (1) to (10) with a suitable carrier, and pulverizing or granulating as necessary. At this time, commonly used carriers include, for example, soybean powder, tobacco powder, wood powder, starch, vegetable powders such as lactose, clays such as kaolin, bentonite and acid clay, talc powder such as talc powder and talc powder. , Silicas such as diatomaceous earth and mica powder. Liquids such as wettable powders, emulsions and oils are prepared by adding water or other suitable solvent and, if necessary, various surfactants such as dispersants according to a conventional method. Aerosol agents, smoke agents and the like can also be prepared according to conventional methods using the respective propellants, smoke generating bases, combustible bases and the like.

In addition to surfactants such as emulsifiers, dispersants, suspending agents, spreading agents, penetrating agents, etc., which are usually added to the above-mentioned preparations as needed, for example, wetting agents and mucilages. Agents, stabilizers, synergists and the like can be added and blended. Examples of the surfactant include various soaps, higher alcohol sulfuric acid esters, alkylsulfonic acids, alkylarylsulfonic acids, quaternary ammonium salts, oxyalkylamines, fatty acid esters, polyalkylene oxides and the like. Further, an appropriate amount of a stabilizer such as an antioxidant and an ultraviolet absorber can be added. In addition, the termite control agent of the present invention can be used in combination with other termite control agents, synergists, etc. depending on the situation of occurrence and damage of termites. Further, a decay inhibitor can be blended and used for controlling wood-destroying fungi that cause deterioration of wood.

The above formulas (1) to (1) contained in each preparation are
The amount of the triterpenes represented by 0) is appropriately determined depending on the dosage form of the above-mentioned preparation and is not particularly limited, but is usually 0.1 to 80% by weight, preferably 0.3 to 50% by weight. It can be a range. If it is less than 0.1% by weight, the termite control effect is not sufficient, and if it exceeds 80% by weight, it may not be suitable for formulation due to precipitation of the active ingredient. Further, the mixing ratio of the triterpenes represented by the formulas (1) to (10) and the pyrethroid insecticide, the organophosphorus insecticide or the carbamate insecticide is 49: 1 to 1:49 by weight, Preferably 10: 1 to 1:
It is 10. The method of use of each preparation differs depending on its dosage form, and by applying an appropriate amount to a location usually requiring treatment for each dosage form, for example, under the floor, in the kitchen, in the bathroom, in the wall, etc., It can be applied by a method such as spraying, coating or pasting. Further, termites can be controlled by impregnating, spraying or applying the liquid of the termite controlling agent of the present invention to wood which is a diet of termites and wood products including paper and paper products. The applied amount is appropriately determined according to the dosage form, application method, application site, etc., and is not limited as long as the desired control effect is achieved.

The termite control agent of the present invention is obtained by blending one or more substances of the triterpenes represented by the formulas (1) to (10) as an active ingredient as described above. Since the compounds represented by the formulas (2), (5), (6) and (7) have a particularly strong termite controlling action, it is preferable to blend these as all or a part of the active ingredients.

The termites to be controlled by the termite controlling agent of the present invention are not particularly limited, and the termites (Coptoter) are not particularly limited.
mes formosanus Shiraki) and Yamato termites (Reti
culitermis speratus kolbe) and other building materials, furniture, leather
This includes all termites that damage textiles, processed vinyl products, electric wires and cables, etc.

[0021]

EXAMPLES The present invention will be described in more detail with reference to examples and test examples, but the present invention is not limited to these examples. In addition, what is simply described as part means part by weight. Example 1 5 kg of hexane was added to 1 kg of dried and ground neem seeds, and extraction was performed 3 times at room temperature for 24 hours (azadirachtin was present in the residue). The obtained extract is filtered,
It was concentrated to dryness with a rotary evaporator to obtain a brown oily substance. Add 10 volumes of methanol to this extract and add 2
Extraction operation was performed 3 times for 4 hours, and the extract was filtered and concentrated to dryness to obtain 90 g of a blackish brown viscous extract. This extract 10
g was fractionated by silica gel chromatography (Silica gel BW-820MH manufactured by Fuji Devison Chemical Co., Ltd., eluent chloroform / ethyl acetate = 40 / 1-100% ethyl acetate), and each fraction was fractionated by high performance liquid chromatography. (Waters prep. Nova-pak C ₁₈ HR, acetonitrile / methanol / water = 35/20/45) was repeatedly used for preparative separation and purification, and azadiradione (formula (1)) 543 mg, 1
7-Hydroxyazajiradione (Formula (2)) 210 m
g, 17-epia zajiradione (formula (3)) 133m
g, 485 mg of epoxyaza diradione (formula (4)),
Gegenin (formula (5)) 162 mg, deacetylgejunin (formula (6)) 150 mg, salanin (formula (7))
745 mg, deacetylsalannin (formula (8)) 141
mg, nimbin (formula (9)) 520 mg; deacetylnin bin (formula (10)) 245 mg were obtained. Each of the obtained purified products was colorless and odorless powder.

Example 2 500 g of dried neem fruit was crushed, 3 liters of methanol was added, extraction was performed 3 times at room temperature for 24 hours, the obtained extraction mixture was filtered, and concentrated to dryness by a rotary evaporator. As a result, 103 g of a brown oily substance was obtained. 10 g of this extract was fractionated by silica gel column chromatography (Silica gel BW-820MH manufactured by Fuji Devison Chemical Co., Ltd., eluent chloroform / ethyl acetate = 40 / 1-100% ethyl acetate), and each fraction was further fractionated. Preparative purification was repeated by high-performance liquid chromatography (Waters prep. Nova-pak C ₁₈ HR, acetonitrile / methanol / water = 35/20/45), and azadirazine (formula (1)) 3
85 mg, 17-hydroxyazaradione (formula (2)) 77 mg, 17-epiaza radiradione (formula (3)) 65 mg, epoxyaza aziradione (formula (4)) 496 mg, gejunin (formula (5)) 101 m
g, deacetylgejunin (formula (6)) 46 mg, sarannin (formula (7)) 126 mg, deacetylsalannin (formula (8)) 51 mg, nimbin (formula (9)) 116 m
Thus, 112 mg of deacetylninbin (formula (10)) was obtained. Each of the obtained purified products was colorless and odorless powder.

Example 3 (Preparation of Oil Solution) Azajiradione (Formula (1)) 5 parts, 17
-Hydroxyazazirradione (formula (2)) 1 part, 17-
1.5 parts of epiazaziradione (formula (3)), 10 parts of epoxyaza aziradione (formula (4)), 1 part of gejunin (formula (5)), deacetylgejunin (formula (6)) 1
Part, sarannin (formula (7)) 2 parts, deacetylsalannin (formula (8)) 0.5 part, nimbin (formula (9)) 1 part,
An oil solution was obtained by dissolving 0.5 part of deacetylninbin (formula (10)) in 76.5 parts of xylene.

Example 4 (Preparation of oil solution) 2 parts of 17-hydroxyazadirazone (formula (2)), 0.5 part of gejunin (formula (5)), deacetylgejunin (formula (6)) 1 Parts and 1 part of sarannin (formula (7)) were dissolved in 95.5 parts of xylene to obtain an oil solution.

Example 5 (Preparation of oil solution) Epoxyaza radiradione (formula (4))
2.5 parts, deacetylgejunin (formula (6)) 2.5
And 0.2 parts of permethrin were dissolved in 94.8 parts of xylene to obtain an oil solution.

Example 6 (Preparation of emulsion) 5 parts of 17-hydroxyazajiradione (formula (2)), deacetylsalanine (formula (8)) 5
Parts, polyoxyethylene styryl phenyl ether 10
To 80 parts of cyclohexane to obtain an emulsion.

Example 7 (Preparation of wettable powder) 5 parts of sarannin (formula (7)), 5 parts of chlorpyruphos, and 2 parts of sodium alkylbenzenesulfonate were mixed well, and 10 parts of white carbon and 78 parts of clay were uniformly mixed and pulverized. To obtain a wettable powder.

Example 8 (Preparation of Dust) 2 parts of azajiradione (formula (1)), 2 parts of gejunin (formula (5)) and 4 parts of nimbin (formula (9)) were dissolved in acetone to give isopropyl acid phosphate ( PAP (manufactured by Nippon Kagaku Kogyo Co., Ltd.) 1 part, white carbon 2 parts and clay 89 parts and uniformly mixed, and then acetone was distilled off to obtain a dust.

Example 9 (Preparation of granules) 1 part of 17-hydroxyazadiradione (formula (2)), 17-epiazadiradione (formula (3))
1 part, deacetylgejunin (formula (6)) 0.5 part, white carbon 2 parts, lignin sulfonate calcium 2
Part, bentonite 20 parts and white clay 3.5 parts were added and kneaded with a kneader, and after granulation, dried with a fluid dryer to obtain granules.

Example 10 (Preparation of aerosol) 1 part of gejunin (formula (5)),
1 part of deacetylgejunin (formula (6)), 3 parts of nimbin (formula (9)) and 2 parts of deacetylninbin (formula (10)) were dissolved in 100 parts of ethanol, and liquefied petroleum gas and a dimethyl ether mixture ( 20 parts (1: 1 volume ratio) was filled in a pressure can for aerosol to obtain an aerosol agent.

Example 11 (Preparation of Dust) 5 parts of azadirazine (formula (1)), 2 parts of gejunin (formula (5)), salanin (formula (7)) 2
Parts and 2 parts of carbaryl were dissolved in acetone, and 1 part of isopropyl acid phosphate (PAP: manufactured by Nippon Kagaku Kogyo Co., Ltd.), 2 parts of white carbon and 86 parts of clay were added and uniformly mixed, and then the acetone was distilled off. A powder was obtained.

Test Example 1 A diluted solution of each compound having a predetermined concentration prepared according to Example 1 was filtered with a diameter of 8 mm (manufactured by Toyo Roshi Kaisha, Ltd., weight 30 m).
A certain amount was applied to g) and dried overnight in a vacuum desiccator. This was placed in a plastic cup (diameter 6 cm, height 4 cm) and 20 worker termite termites were released and the mortality rate was determined. The test was performed in 10 replicates. Table 1 shows the test amount of the sample and the average mortality rate 21 days after the release.

[0033]

[Table 1]

As a result, the termite controlling agent of the present invention has an excellent controlling effect, and in particular, 17-hydroxyazadirradione (formula (2)), gejunin (formula (5)), deacetylgejunin (formula). (6)) and sarannin (formula (7)) exhibited remarkably excellent effects.

Test Example 2 A 1 × 1 × 2 cm piece of Japanese red pine wood was coated with the oil solution prepared in Examples 3, 4 and 5, dried in a desiccator, and then weighed to obtain a test sample. A poly cup (diameter 12 cm, height 7 cm) containing this treated wood piece with wet sea sand
I put 100 termite termite ants and 10 soldier ants. After 20 days, the number of surviving insects and the decrease in the weight of wood chips were examined.
As a control, untreated wood chips and 20 parts of the neem methanol extract obtained in the procedure of Example 1 were mixed with 8 parts of xylene.
The test was conducted at the same time when coating treatment was performed with an oil agent (neem oil agent) prepared by dissolving in 0 part. The test was performed in triplicate, and the results obtained are shown in Table 2.

[0036]

[Table 2]

As a result, each termite controlling agent prepared in Examples 3 to 5 had an excellent effect as compared with a neem oil agent containing only a neem methanol extract as a component.

[0038]

EFFECTS OF THE INVENTION Since the triterpenes compounded in the termite control agent of the present invention are colorless and odorless powders, it is possible to provide a termite control agent that is easy to prepare and handle and has a high control effect. became. Further, since the triterpenes are highly safe and have little residual toxicity,
It can be used with confidence. In addition, it is possible to reduce the dose of pesticides by using it in combination with existing pesticides. Therefore, it is possible to provide a safer termite control agent having less problems such as residual toxicity to the human body and having a termite insecticidal effect.

 ─────────────────────────────────────────────────── ─── Continued Front Page (72) Inventor Nobuyuki Hagiwara 9-5 Akahorishinmachi, Yokkaichi-shi, Mie Sun Kagaku Co., Ltd. (72) Inventor Kim Takehisa 9-5 Akahorishinmachi, Yokkaichi-shi, Mie Solarization Gaku Co., Ltd. (72) Inventor Nagataka Yamazaki 9-5 Akahorishinmachi, Yokkaichi-shi, Mie Sun Kagaku Co., Ltd.

Claims (3)

[Claims] 1. A termite control agent comprising, as an active ingredient, one or more substances selected from the group consisting of triterpenes represented by formulas (1) to (10). [Chemical 1] 2. The whole or a part of triterpenes as an active ingredient is selected from the group consisting of formulas (2), (5), (6) and (7). Termite control agent. 3. One or more selected from the group consisting of triterpenes represented by formulas (1) to (10) and one selected from the group consisting of pyrethroid insecticides, organophosphorus insecticides and carbamate insecticides. A termite control agent comprising the above as an active ingredient.