WO2012165499A1 - トリアゾール化合物、およびその利用 - Google Patents
トリアゾール化合物、およびその利用 Download PDFInfo
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- WO2012165499A1 WO2012165499A1 PCT/JP2012/063976 JP2012063976W WO2012165499A1 WO 2012165499 A1 WO2012165499 A1 WO 2012165499A1 JP 2012063976 W JP2012063976 W JP 2012063976W WO 2012165499 A1 WO2012165499 A1 WO 2012165499A1
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- triazole compound
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- 0 *CC(CCC1Cc2ccccc2)(C1(C[n]1ncnc1)O)I Chemical compound *CC(CCC1Cc2ccccc2)(C1(C[n]1ncnc1)O)I 0.000 description 3
- JDBXFVMTVALKQP-UHFFFAOYSA-N C=[I]Cc1ccc(N)[nH]1 Chemical compound C=[I]Cc1ccc(N)[nH]1 JDBXFVMTVALKQP-UHFFFAOYSA-N 0.000 description 1
Classifications
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
- A01N43/00—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds
- A01N43/64—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds having rings with three nitrogen atoms as the only ring hetero atoms
- A01N43/647—Triazoles; Hydrogenated triazoles
- A01N43/653—1,2,4-Triazoles; Hydrogenated 1,2,4-triazoles
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07B—GENERAL METHODS OF ORGANIC CHEMISTRY; APPARATUS THEREFOR
- C07B57/00—Separation of optically-active compounds
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D249/00—Heterocyclic compounds containing five-membered rings having three nitrogen atoms as the only ring hetero atoms
- C07D249/02—Heterocyclic compounds containing five-membered rings having three nitrogen atoms as the only ring hetero atoms not condensed with other rings
- C07D249/08—1,2,4-Triazoles; Hydrogenated 1,2,4-triazoles
Definitions
- the present invention relates to an enantiomer of a triazole compound, a plant disease control agent containing the same, a plant disease control method using the plant disease control agent, and use thereof.
- Patent Document 3 has no description regarding the agricultural and horticultural chemicals.
- Japanese Patent Gazette Japanese Patent Gazette "Japanese Patent Laid-Open No. 01-93574" Japanese Patent Gazette “Japanese Patent Laid-Open No. 01-186871” German Patent Application Publication No. 3902031 Japanese Patent Gazette “Japanese Patent Laid-Open No. 05-271197” Japanese Patent Gazette "Japanese Patent Laid-Open No. 01-301664"
- the present invention has been made in view of the above-mentioned problems, and an object thereof is to provide a compound that meets the above-mentioned demand.
- the present inventors have studied in detail the chemical structure and physiological activity of 2- (halogenated hydrocarbon substitution) -5-benzyl-1-azolylmethylcyclopentanol derivatives.
- the azole derivative represented by the following formula (I) (specifically, 2- (halogenated hydrocarbon substituted) -5-benzyl-1-azolylmethylcyclopentanol derivative) has excellent activity.
- the present inventors have found that each enantiomer has particularly excellent activity, and completed the present invention.
- This invention is made
- the first aspect of the triazole compound according to the present invention is represented by the formula (I)
- R 1 represents an alkyl group having 1 to 6 carbon atoms
- R 2 represents a haloalkyl group having 1 to 6 carbon atoms
- Ar may be substituted with a hydrogen atom.
- a second embodiment of the triazole compound according to the present invention is a triazole compound represented by the above formula (I), which is an —OH group, —R 2 group and CH 2 —Ar group bonded to a cyclopentane ring. These are triazole compounds that are cis-type and are (+)-enantiomers.
- the plant disease control agent according to the present invention is a plant disease control agent containing the above triazole compound as an active ingredient.
- the plant disease control method according to the present invention is a method for controlling plant diseases, which comprises a step of performing a foliage treatment or a non-foliage treatment using the above-mentioned plant disease control agent.
- the seed according to the present invention is a seed treated with the above plant disease control agent.
- the triazole compound according to the present invention has an excellent bactericidal action against many bacteria that cause plant diseases. Therefore, the chemical
- a first embodiment of the triazole compound according to the present invention is a compound of formula (I)
- R 1 represents an alkyl group having 1 to 6 carbon atoms
- R 2 represents a haloalkyl group having 1 to 6 carbon atoms
- Ar may be substituted with a hydrogen atom.
- a triazole compound (-)-enantiomer in which a —OH group, a —R 2 group, and a CH 2 —Ar group, which are bonded to a cyclopentane ring, are a ( ⁇ )-enantiomer.
- Compound I ( ⁇ ) hereinafter referred to as “Compound I ( ⁇ )”.
- a second aspect of the triazole compound according to the present invention is a triazole compound represented by the above formula (I), which is an —OH group, —R 2 group and CH 2 — bonded to a cyclopentane ring.
- This is a triazole compound (hereinafter referred to as “compound I (+)”) in which Ar groups are in cis form and are (+)-enantiomers.
- R 1 represents an alkyl group having 1 to 6 carbon atoms, specifically, methyl group, ethyl group, n-propyl group, isopropyl group, n-butyl group, isobutyl group, sec-butyl group, tert group -Butyl group, pentyl group, 1-methylbutyl group, 2-methylbutyl group, 1-ethylpropyl group, hexyl group and the like can be mentioned.
- an alkyl group having 1 to 4 carbon atoms is more preferable, and an alkyl group having 1 to 3 carbon atoms is particularly preferable.
- R 2 represents a haloalkyl group having 1 to 6 carbon atoms.
- Specific examples of the halogen atom contained in R 2 include a fluorine atom, a chlorine atom, a bromine atom and an iodine atom, and among them, a fluorine atom, a chlorine atom and a bromine atom are more preferable. Further, there is no limit to the number of halogen atoms contained in R 2.
- haloalkyl group having 1 to 6 carbon atoms include chloromethyl group, dichloromethyl group, trichloromethyl group, 2-chloroethyl group, 1-chloroethyl group, 2,2-dichloroethyl group, 1,2- Dichloroethyl group, 2,2,2-trichloroethyl group, 3-chloropropyl group, 2,3-dichloropropyl group, 1-chloro-1-methylethyl group, 2-chloro-1-methylethyl group, 2- Chloropropyl group, 4-chlorobutyl group, 5-chloropentyl group, fluoromethyl group, difluoromethyl group, trifluoromethyl group, 2-fluoroethyl group, 1-fluoroethyl group, 2,2-difluoroethyl group, 1, 2-difluoroethyl group, 2,2,2-trifluoroethyl group, 3-fluoropropyl
- Ar represents an aromatic hydrocarbon group having 6 to 10 carbon atoms in which a hydrogen atom may be substituted, or a 5- to 10-membered aromatic heterocyclic group in which a hydrogen atom may be substituted.
- Examples of the aromatic hydrocarbon group having 6 to 10 carbon atoms in Ar include a phenyl group, a naphthyl group, an indene group, and an azulene group.
- Examples of the aromatic heterocyclic ring constituting the 5- to 10-membered aromatic heterocyclic group include thiophene, pyridine, thiazole, furan, pyrrole, oxazole, isoxazole, isothiazole, triazole, furasan, imidazole, pyrazole, pyrazine, Examples include pyrimidine, triazine, quinoline, quinoxaline, benzothiophene, benzimidazole, benzthiazole, benzofuran, coumarin, and isoquinoline.
- Examples of the substituent that the aromatic hydrocarbon group and aromatic heterocyclic group in Ar may have include a halogen atom, a phenyl group, an alkyl group having 1 to 4 carbon atoms, a haloalkyl group having 1 to 4 carbon atoms, and 1 to 4 alkoxy groups and haloalkoxy having 1 to 4 carbon atoms.
- Examples of the halogen atom include a fluorine atom, a chlorine atom and a bromine atom.
- Examples of the alkyl group having 1 to 4 carbon atoms include methyl group, ethyl group, n-propyl group, isopropyl group and n-butyl group.
- Examples of the haloalkyl group having 1 to 4 carbon atoms include trifluoromethyl group, 1,1,2,2,2-pentafluoroethyl group, chloromethyl group, trichloromethyl group and bromomethyl group.
- Examples of the alkoxy group having 1 to 4 carbon atoms include a methoxy group, an ethoxy group, and an n-propoxy group.
- Examples of the haloalkoxy group having 1 to 4 carbon atoms include a trifluoromethoxy group, a difluoromethoxy group, a 1,1,2,2,2-pentafluoroethoxy group, and a 2,2,2-trifluoroethoxy group.
- the hydrogen atom in the phenyl group as a substituent may be substituted with a halogen atom.
- the number and position of substituents in the aromatic hydrocarbon group and aromatic heterocyclic group of Ar are not particularly limited. Moreover, when there are a plurality of substituents, each may be the same or different from each other.
- Ar examples include, for example, the following formulas (a) to (d), but are not limited thereto.
- Ar other than the following formulas (a) to (d) include polycyclic aromatic hydrocarbons such as naphthalene and azulene, or polycyclic aromatic heterocycles such as quinoline and benzothiophene.
- Y 1 represents a halogen atom, an alkyl group having 1 to 3 carbon atoms or a haloalkoxy group having 1 to 3 carbon atoms, and p is 0, 1 or 2.
- Y 2 represents a halogen atom. Represents an atom. * Represents a bond with a methylene group.
- the —OH group, —R 2 group and —CH 2 —Ar group bonded to the cyclopentane ring (position 1 and 2 of the cyclopentane ring) Position, and 1-position and 5-position) are cis to each other with respect to the cyclopentane ring.
- 1,2-cis refers to the cyclopentane ring 1 in the compound represented by the general formula (I). Mention is made of functional groups corresponding to the —OH group at the position, —R 2 group at the 2-position and —CH 2 —Ar group at the 5-position, or the intermediate compound of the compound represented by the general formula (I). It is what.
- R 1 represents an alkyl group having 1 to 6 carbon atoms
- X 1 and X 2 each independently represent a halogen atom
- m represents 0 or 1.
- the —OH group, —CH 2 —X 1 group and substituted or unsubstituted benzyl group bonded to the cyclopentane ring are cis-type, and the ( ⁇ )-enantiomer is There may be mentioned some triazole compounds.
- specific examples of the compound (I (+)) include, for example, a triazole compound represented by the above formula (Ia), an —OH group, —CH 2 —X, which is bonded to a cyclopentane ring. Mention may be made of triazole compounds in which one group and a substituted or unsubstituted benzyl group are in cis form and are (+)-enantiomers.
- R 1 in formula (Ia) has the same meaning as R 1 described above.
- X 1 and X 2 each independently represent a halogen atom. Specifically, each independently represents a fluorine atom, a chlorine atom, a bromine atom or an iodine atom. Among these, X 1 is preferably a fluorine atom, a chlorine atom and a bromine atom, and X 2 is preferably a fluorine atom and a chlorine atom.
- n represents the number of X 2 bonded to the aromatic ring of the benzyl group, and is 0 or 1.
- the bonding position of X 2 in the benzyl group is not limited, but it is preferably a 4-substituted benzyl group.
- the compound (I ( ⁇ )) are triazole compounds represented by the above formula (Ia), in which m is 1, X 2 is a fluorine atom or a chlorine atom, and a cyclopentane ring And a triazole compound in which the —OH group, —CH 2 —X 1 group, and substituted or unsubstituted benzyl group bonded to each other are in the cis form and are the ( ⁇ )-enantiomer.
- a more specific example of the compound (I (+)) is a triazole compound represented by the above formula (Ia), in which m is 1, X 2 is a fluorine atom or a chlorine atom, And a triazole compound in which the —OH group, —CH 2 —X 1 group, and substituted or unsubstituted benzyl group bonded to the cyclopentane ring are in the cis form and are the (+)-enantiomer. .
- Compound (I ( ⁇ )) and Compound (I (+)) have an excellent bactericidal action against many fungi that cause plant diseases. Furthermore, the compound (I ( ⁇ )) has low phytotoxicity to plants.
- amylose tris (3,5-dimethylphenyl carbamate), cellulose tris (3,5-dimethylphenyl carbamate), cellulose tris (3,5-dichlorophenyl carbamate), amylose tris [(S) - ⁇ -methyl Benzyl carbamate], cellulose tris (4-methylbenzoate), amylose tris (5-chloro-2-methylphenyl carbamate) or cellulose tris (3-chloro-4-methylphenyl carbamate) immobilized on a silica gel carrier Separation from compound (I ′) using hexane / ethanol (100/0 to 0/100), hexane / isopropanol (100/0 to 0/100), ethanol, methanol or acetonitrile as the mobile phase.
- optical rotation of each separated enantiomer may be determined according to a conventionally known method.
- R 1 and Ar are as defined above for R 1 and Ar.
- X 3 represents a leaving group that can be substituted with a halogen atom.
- the leaving group include a substituted sulfonyloxy group and an alkoxy group.
- the substituted sulfonyloxy group include —OSO 2 R 4 .
- R 4 represents an alkyl group having 1 to 3 carbon atoms, a phenyl group or a naphthyl group which may be substituted with a hydrogen atom.
- Examples of the alkyl group having 1 to 3 carbon atoms that may be substituted with a hydrogen atom include a methyl group, an ethyl group, an n-propyl group, an isopropyl group, and a trifluoromethyl group.
- Examples of the phenyl group and naphthyl group in which a hydrogen atom is substituted include a 4-methylphenyl group, a 2-nitrophenyl group, and a 5-dimethylaminonaphthyl group. Of these, a methyl group and a 4-methylphenyl group are more preferable.
- n indicates the number of hydrogen atoms may be substituted with X 3 in R 3.
- n is preferably 1 to 5, more preferably 1 to 3, and 1 is particularly preferable.
- R 3 represents an alkyl group having 1 to 6 carbon atoms in which one or more hydrogen atoms are substituted with X 3 .
- X 1 represents a halogen atom and has the same meaning as X 1 described above.
- a method for substituting a leaving group with a halogen atom (a) a method in which a compound having a substituted sulfonyloxy group such as a paratoluenesulfonyloxy group and a methanesulfonyloxy group is substituted with a halide salt in a solvent, (b) A method of replacing a hydroxy group or an alkoxy group with hydrochloric acid or hydrobromic acid, (c) a method of replacing a hydroxy group with phosphorus halide, (d) a method of reacting a hydroxy group with thionyl halide, etc. Can be mentioned.
- the reaction in the method shown as (a) usually comprises compound (II) and a halide salt such as potassium fluoride, cesium fluoride, lithium chloride, potassium chloride, lithium bromide, magnesium bromide and sodium iodide. It is carried out by mixing in a solvent.
- a halide salt such as potassium fluoride, cesium fluoride, lithium chloride, potassium chloride, lithium bromide, magnesium bromide and sodium iodide. It is carried out by mixing in a solvent.
- the amount of halogenated salt used relative to compound (II) is, for example, 0.1 to 100 times mol, preferably 0.8 to 20 times mol.
- the reaction temperature is, for example, 0 ° C. to 250 ° C., preferably room temperature to 200 ° C.
- the reaction time is, for example, 0.1 hour to several days, preferably 0.2 hour to 2 days.
- R 4 in the substituted sulfonyl chloride has the same meaning as R 4 described above.
- the amount of the substituted sulfonyl chloride to be used with respect to the compound (III) is, for example, 0.5 to 10 times mol, preferably 0.8 to 5 times mol.
- the reaction may proceed without adding a base, it is preferable to add a base in order to remove generated hydrogen chloride.
- the amount of the base used relative to compound (III) is, for example, 0 to 5 times mol (however, 0 is not included), preferably 0.5 to 3 times mol.
- the base used is not particularly limited.
- examples of the base include alkali metal hydrogen compounds such as sodium hydride, potassium hydride and lithium hydride, and organic amines such as triethylamine, pyridine, 4-dimethylaminopyridine and N, N-dimethylaniline. .
- the reaction temperature can be appropriately set depending on the type of solvent and base used.
- the reaction temperature is preferably ⁇ 50 ° C. to 200 ° C., more preferably ⁇ 20 ° C. to 150 ° C.
- the reaction time can be appropriately set depending on the type of solvent and base used.
- the reaction time is preferably 0.1 hour to several days, more preferably 0.5 hour to 1 day.
- Step C Compound (III) used in Step C may be produced using a known method (for example, see Patent Document 4). However, a compound represented by the following formula (IIIa) having a hydroxymethyl group and an alkyl group at the 2-position (hereinafter referred to as compound (IIIa)) is preferably produced using the synthesis method shown below.
- a carbonyl compound represented by the following formula (VI) (hereinafter referred to as “compound (VI)”) is oxiraneed to give an oxirane derivative represented by the following formula (V) (hereinafter referred to as “compound (V)”). )
- compound (X) a 1,2,4-triazole compound represented by the following formula (X)
- compound (IV) the following formula (IV)
- compound (IIIa) is synthesize
- a series of reaction steps (step D) is shown in the following reaction formula (3).
- G represents a protecting group.
- the protective group is not particularly limited as long as compound (IIIa) can be produced from compound (IV).
- Examples of the protective group include alkoxymethyl groups such as methoxymethyl group and ethoxymethyl group, lower alkyl groups such as t-butyl group and methyl group, and substituted or unsubstituted benzyl group.
- M represents a hydrogen atom or an alkali metal.
- alkali metal sodium and potassium are more preferable.
- step D1 the step of obtaining compound (V) by oxirane conversion of compound (VI) (step D1) will be described.
- compound (VI) is synthesized with a sulfur ylide such as sulfonium methylides such as dimethylsulfonium methylide and sulfoxonium methylides such as dimethylsulfoxonium methylide.
- a sulfur ylide such as sulfonium methylides such as dimethylsulfonium methylide and sulfoxonium methylides such as dimethylsulfoxonium methylide.
- the method of making it react in a solvent can be mentioned.
- the sulfonium methylides and sulfoxonium methylides used in the reaction are either a sulfonium salt (eg, trimethylsulfonium iodide or trimethylsulfonium bromide) or a sulfoxonium salt (eg, trimethylsulfoxonium iodide or trimethyl) in a solvent. It can be produced by reacting a sulfoxonium bromide or the like) with a base.
- the amount of the sulfonium methylides and the sulfoxonium methylides used in the reaction is preferably 0.5 to 5 moles, preferably 0.8 to 2 moles, relative to the compound (VI). More preferred.
- the solvent used is not particularly limited.
- the solvent include amides such as dimethyl sulfoxide, N-methylpyrrolidone and N, N-dimethylformamide, ethers such as tetrahydrofuran and dioxane, and mixed solvents thereof.
- the base used for the production of sulfonium methylides and sulfoxonium methylides is not particularly limited.
- the base include metal hydrogen compounds such as sodium hydride and alkali metal alkoxides such as sodium methoxide, sodium ethoxide, sodium t-butoxide and potassium t-butoxide.
- the reaction temperature and reaction time can be appropriately set depending on the type of solvent, compound (VI), sulfonium salt or sulfoxonium salt, base and the like.
- the reaction temperature is preferably ⁇ 100 ° C. to 200 ° C., more preferably ⁇ 50 ° C. to 150 ° C.
- the reaction time is preferably 0.1 hour to several days, and more preferably 0.5 hour to 2 days.
- the base used in the second synthesis method is not particularly limited, and for example, sodium hydroxide can be used.
- the amount of the base relative to the compound (VI) is not particularly limited, but is, for example, 0.5 to 10 times mol, and more preferably 0.8 to 6 times mol.
- the samarium iodide used in the second synthesis method can be produced by reacting samarium metal with 1,2-diiodoethane or diiodomethane in an anhydrous solvent.
- the solvent used in the second synthesis method is not particularly limited, and for example, ethers such as tetrahydrofuran can be used.
- the reaction temperature and reaction time can be appropriately set depending on the type of solvent, compound (VI), base and the like.
- the reaction temperature is preferably ⁇ 100 ° C. to 150 ° C., more preferably ⁇ 50 ° C. to 100 ° C.
- the reaction time is preferably 0.1 hour to several days, and more preferably 0.5 hour to 2 days.
- step D2 the step (step D2) of obtaining compound (IV) by reacting compound (V) with compound (X) in this step D will be described.
- Compound (IV) is obtained by mixing compound (V) and compound (X) in a solvent, so that the carbon atom constituting the oxirane ring in the oxirane derivative (compound (V)) and 1,2,4-triazole It is produced by the formation of a carbon-nitrogen bond between nitrogen atoms.
- the solvent is not particularly limited, and examples thereof include amides such as N-methylpyrrolidone and N, N-dimethylformamide.
- the amount of the compound (X) used relative to the compound (V) is, for example, 0.5 to 10 times mol, and more preferably 0.8 to 5 times mol. Moreover, you may add a base if desired.
- the amount of the base used relative to compound (X) is, for example, 0 to 5 times mol (however, 0 is not included), and more preferably 0.5 to 2 times mol.
- the reaction temperature can be appropriately set depending on the type of solvent, base and the like.
- the reaction temperature is preferably 0 ° C. to 250 ° C., more preferably 10 ° C. to 150 ° C.
- reaction time can be suitably set with kinds, such as a solvent and a base.
- the reaction time is preferably 0.1 hour to several days, and more preferably 0.5 hour to 2 days.
- Compound (IV) can be produced by producing compound (V) and then stepwise reacting with compound (X).
- a by-product such as an oxetane derivative may be produced, leading to a decrease in yield.
- azolation may be carried out while producing the compound (V) (see the following reaction formula (4)).
- the compound (VI) and the compound (X) are dissolved in a solvent. Then, a sulfonium salt such as trimethylsulfonium salt or a sulfoxonium salt such as trimethylsulfoxonium salt and a base are intermittently added thereto, and in the reaction system, sulfonium methylides such as dimethylsulfonium methylide or dimethylsulfoxo Azolation is carried out while generating a compound (V) by generating sulfoxonium methylides such as nium methylide.
- a sulfonium salt such as trimethylsulfonium salt or a sulfoxonium salt such as trimethylsulfoxonium salt and a base are intermittently added thereto, and in the reaction system, sulfonium methylides such as dimethylsulfonium methylide or dimethylsulfoxo Azolation is carried out while generating a compound (V) by generating sulfoxonium methyl
- the solvent used here is not particularly limited.
- the solvent include polar solvents having amide bonds such as N-methylpyrrolidone and N, N-dimethylformamide, dimethyl sulfoxide, and mixed solvents of polar solvents and alcohols.
- polar solvents having amide bonds such as N-methylpyrrolidone and N, N-dimethylformamide, dimethyl sulfoxide, and mixed solvents of polar solvents and alcohols.
- the alcohol t-butanol can be used as the alcohol.
- the base used for the production of sulfonium methylides and sulfoxonium methylides is not particularly limited.
- the base include metal hydrogen compounds such as sodium hydride, and alkali metal alkoxides such as sodium methoxide, sodium ethoxide, sodium t-butoxide and potassium t-butoxide. Further, an alkali metal salt of 1,2,4-triazole may be used.
- the reaction temperature can be appropriately set depending on the type of solvent, compound (VI), sulfonium salt or sulfoxonium salt, base and the like.
- the reaction temperature is preferably ⁇ 100 ° C. to 250 ° C., more preferably ⁇ 50 ° C. to 200 ° C.
- the reaction time can be appropriately set depending on the type of the solvent, compound (VI), sulfonium salt or sulfoxonium salt and base.
- the reaction time is preferably 0.1 hour to several days, and more preferably 0.5 hour to 2 days.
- the number of times when the sulfonium salt such as trimethylsulfonium salt or the sulfoxonium salt such as trimethylsulfoxonium salt and the base are intermittently added is the number of times that can achieve the predetermined purpose, in particular It is not limited.
- the number of times is, for example, preferably 2 to 20 times, and more preferably 3 to 15 times.
- the total amount of the sulfonium salt such as trimethylsulfonium salt or the sulfoxonium salt such as trimethylsulfoxonium salt is preferably 0.5 to 5 times mol with respect to the compound (VI), 0.8 to 2 More preferably, it is a double mole.
- the amount of the compound (X) used relative to the compound (VI) is, for example, 0.5 to 10 times mol, and more preferably 0.8 to 5 times mol.
- Compound (X) is preferably one in which M is an alkali metal.
- patent document 5 should just be referred for the detailed process of the method of performing an azolation, producing
- suitable conditions differ depending on the type of the protecting group, but for example, an alkoxymethyl group such as a methoxymethyl group and an ethoxymethyl group or a lower alkyl group such as a t-butyl group and a methyl group is used as the protecting group.
- deprotection under acidic conditions such as hydrogen chloride and sulfuric acid in a solvent is preferred.
- acids used here include hydrogen halides such as hydrogen chloride and inorganic acids such as sulfuric acid.
- the amount used is not particularly limited, but the amount of acid used relative to compound (IV) is, for example, 0.5 to 100 times mol, and more preferably 0.8 to 20 times mol.
- the reaction temperature is, for example, 0 ° C. to 200 ° C., more preferably room temperature to 100 ° C.
- the reaction time is, for example, 0.1 hour to several days, and more preferably 0.5 hour to 2 days.
- Step E Compound (VI) used in Step D can be suitably synthesized by the following method.
- a keto ester compound represented by the following formula (IX) (hereinafter referred to as “compound (IX)”) is hydroxymethylated to produce a compound represented by the following formula (VIII) (hereinafter referred to as “compound (VIII)”. ) ").
- a protective group such as a methoxymethyl group and a t-butyl group is introduced into the hydroxy group of compound (VIII), and a compound represented by the following formula (VII) (hereinafter referred to as “compound (VII)”)
- a carbonyl compound (compound (VI)) represented by a following formula (VI) is obtained by hydrolyzing and decarboxylating compound (VII).
- Step E A series of reaction steps (“Step E”) is shown in the following reaction formula (5). (Reaction Formula (5))
- R 5 represents an alkyl group having 1 to 4 carbon atoms.
- alkyl group having 1 to 4 carbon atoms include methyl group, ethyl group, isopropyl group, n-propyl group, 1-methylpropyl group, 2-methylpropyl group and n-butyl group.
- step E each reaction step included in step E will be described.
- Step E1 in this step E, in the step (step E1) of obtaining compound (VIII) by hydroxymethylating compound (IX), a method of reacting compound (IX) with formaldehyde in the presence of a base in a solvent may be used.
- the amount of formaldehyde used relative to compound (IX) is, for example, 0.5 to 20 times mol, and more preferably 0.8 to 10 times mol.
- Examples of the base include, but are not limited to, alkali metal carbonates such as sodium carbonate and potassium carbonate, and alkali metal hydroxides such as sodium hydroxide.
- the amount of the base used relative to compound (IX) is, for example, 0.1 to 10 times mol, more preferably 0.2 to 5 times mol.
- the reaction temperature is, for example, 0 ° C. to 250 ° C., and more preferably 0 ° C. to 100 ° C.
- the reaction time is, for example, 0.1 hour to several days, and more preferably 0.5 hour to 2 days.
- Step E2 Next, in this step E, a step (step E2) of obtaining a compound (VII) by introducing a protecting group into the hydroxy group of the compound (VIII) will be described.
- the protecting group for protecting the hydroxy group is not particularly limited, but an alkoxymethyl group such as a methoxymethyl group and an ethoxymethyl group or a lower alkyl group such as a t-butyl group is preferably used.
- the introduction of these protecting groups is carried out under acidic catalyst conditions (a) in the case of introduction of an alkoxymethyl group, a method by an acetal exchange reaction between a hydroxy group in compound (VIII) and formaldehyde dialkyl acetal, (b) t-
- a method of adding a hydroxy group in compound (VIII) to isobutene can be suitably used.
- acids hydrochloric acid, phosphoric acid (including compounds that generate acid groups upon addition of alcohol and water, such as diphosphorus pentoxide), inorganic acids such as sulfuric acid, and organic acids such as p-toluenesulfonic acid are used. be able to. It is preferable to use formaldehyde dialkyl acetal in the presence of these acids, in a solvent or in the absence of a solvent. In addition, it is more preferable to add a compound that can remove the produced alcohol, such as diphosphorus pentoxide.
- the amount of formaldehyde dialkyl acetal used with respect to compound (VIII) is, for example, 0.5 to 50 times mol, more preferably 0.8 to 10 times mol.
- the amount of the acid used relative to compound (VIII) is, for example, 0.01 to 10-fold mol, more preferably 0.05 to 5-fold mol.
- the reaction temperature is, for example, 0 ° C. to 250 ° C., and more preferably 0 ° C. to 150 ° C.
- the reaction time is, for example, 0.1 hour to several days, and more preferably 0.5 hour to 2 days.
- compound (VIII) is reacted with isobutene in the presence of an inorganic acid such as hydrochloric acid, phosphoric acid and sulfuric acid, or an organic acid such as p-toluenesulfonic acid and trifluoroacetic acid. It is preferable.
- the amount of isobutene used relative to compound (VIII) is, for example, 0.5 to 100 times mol, more preferably 0.8 to 20 times mol.
- the amount of the acid used relative to compound (VIII) is, for example, 0.01 to 10-fold mol, more preferably 0.05 to 5-fold mol.
- the reaction temperature is, for example, 0 ° C. to 200 ° C., more preferably 0 ° C. to 100 ° C.
- the reaction time is, for example, 0.1 hour to several days, and more preferably 0.5 hour to 2 days.
- Step E3 Subsequently, the step (Step E3) in which Compound (VII) is hydrolyzed and decarboxylated to obtain Compound (VI) in Step E will be described.
- This reaction is preferably performed in a solvent in the presence of a base.
- a base for example, alkali metal bases such as sodium hydroxide and potassium hydroxide are preferably used.
- the amount of the base used with respect to compound (VII) is, for example, 0.1 to 50 times mol, more preferably 0.2 to 20 times mol.
- the solvent examples include a solvent composition composed of water, water added with alcohols and the like, and a solvent that does not form a uniform layer with each other (water-toluene, etc.) (in this case, a phase transfer catalyst, For example, it may be preferred to use a conventional quaternary ammonium salt).
- the reaction temperature is, for example, 0 ° C. to the reflux point, and more preferably room temperature to the reflux point.
- the reaction time is, for example, 0.1 hour to several days, and more preferably 0.5 hour to 24 hours.
- solvent to be used is not particularly limited as long as it does not participate in the reaction.
- ethers such as diethyl ether, tetrahydrofuran and dioxane; alcohols such as methanol, ethanol and isopropanol; benzene, toluene and xylene
- Aromatic hydrocarbons such as petroleum ether, aliphatic hydrocarbons such as hexane and methylcyclohexane, and amides such as N, N-dimethylformamide, N, N-dimethylacetamide and N-methyl-2-pyrrolidinone Can be mentioned.
- solvent water, acetonitrile, ethyl acetate, acetic anhydride, acetic acid, pyridine, dimethyl sulfoxide, and the like can be used as the solvent. These solvents may be used as a mixture of two or more.
- examples of the solvent include a solvent composition composed of solvents that do not form a uniform layer with each other.
- a phase transfer catalyst such as a conventional quaternary ammonium salt or crown ether may be added to the reaction system.
- Base / acid A base or an acid may be added to the above-mentioned solvent.
- the base used is not particularly limited.
- examples of the base include alkali metal carbonates such as sodium carbonate, sodium hydrogen carbonate, potassium carbonate and potassium hydrogen carbonate; alkaline earth metal carbonates such as calcium carbonate and barium carbonate; sodium hydroxide and potassium hydroxide Alkali metal hydroxides; alkali metals such as lithium, sodium and potassium; alkali metal alkoxides such as sodium methoxide, sodium ethoxide and potassium t-butoxide; sodium hydride, potassium hydride and lithium hydride, etc.
- Alkali metal hydrogen compounds such as n-butyllithium; alkali metal amides such as lithium diisopropylamide; and triethylamine, pyridine, 4-dimethylaminopyridine, N, N-dimethyla Phosphorus and 1,8-diazabicyclo-7- [5.4.0] Organic amines such as undecene, and the like.
- the acid used is not particularly limited.
- the acid include inorganic acids such as hydrochloric acid, hydrobromic acid, hydroiodic acid and sulfuric acid; organic acids such as formic acid, acetic acid, butyric acid, trifluoroacetic acid and p-toluenesulfonic acid; and lithium chloride, bromide Mention may be made of Lewis acids such as lithium, rhodium chloride, aluminum chloride and boron trifluoride.
- the compound (I ( ⁇ )) and the compound (I (+)) have a 1,2,4-triazolyl group, they form an acid addition salt with an inorganic acid or an organic acid, or a metal complex.
- Compound (I ( ⁇ )) and compound (I (+)) may be used in the form of their acid addition salts and metal complexes.
- Plant disease control effect The usefulness of the plant disease control agent which concerns on this invention is demonstrated.
- Both compound (I ( ⁇ )) and compound (I (+)) have a controlling effect against a wide range of plant diseases including foliage diseases, seed infectious diseases and soil infectious diseases.
- Examples of applicable diseases include: soybean rust (Phakopsora pachyrhizi, Phakopsora meibomiae), rice blast (Pyricularia grisea, Pyricularia oryzae), rice sesame leaf blight (Cochliobolus miyabeanus), rice sheath blight (Rhizoctonia solani) , Apple powdery mildew (Podosphaera leucotricha), apple black spot disease (Venturia inaequalis), apple morinia disease (Monilinia mali), apple spotted leaf disease (Alternaria alternata), apple rot disease (Valsa mali), pear black spot disease (Alternaria kikuchiana) Pear powdery mild
- Examples of applied plants include wild plants, plant cultivars, plants and plant cultivars obtained by conventional biological breeding such as crossbreeding or protoplast fusion, genetically modified plants and plant cultivars obtained by genetic manipulation. Can be mentioned.
- Examples of genetically modified plants and plant cultivars include herbicide-tolerant crops, pest-tolerant crops incorporating insecticidal protein production genes, disease-resistant crops incorporating resistance-inducing substance production genes for diseases, improved crops, improved yields
- Examples include crops, preservative-enhancing crops, and yield-enhancing crops.
- Specific examples of genetically modified plant cultivars include those containing registered trademarks such as ROUNDUP READY, LIBERTY LINK, CLEARFIELD, YIELDGARD, HERCULEX, BOLLGARD and the like.
- both of the compound (I ( ⁇ )) and the compound (I (+)) have the effect of regulating the growth of a wide variety of crops and horticultural plants or increasing the yield thereof. Shows the effect of improving quality.
- crops include wheat, barley and buckwheat, rice, rapeseed, sugar cane, corn, maize, soybeans, peas, peanuts, sugar beet, cabbage, garlic, radish, carrots, apples, pears, tangerines, Citrus such as orange and lemon, peach, cherry peach, avocado, mango, papaya, pepper, cucumber, melon, strawberry, tobacco, tomato, eggplant, turf, chrysanthemum, azalea, and other ornamental plants.
- a plant disease control agent containing compound (I ( ⁇ )) or compound (I (+)) as an active ingredient is usually mixed with a solid carrier, liquid carrier, surfactant or other formulation adjuvant. It is formulated and used in various forms such as powders, wettable powders, granules and emulsions.
- compound (I ( ⁇ )) or compound (I (+)) is 0.1 to 95% by weight, preferably 0.5 to 90% by weight, more preferably 2 to 80% by weight as an active ingredient. % Should be included.
- Examples of carriers, diluents and surfactants used as formulation adjuvants include the following.
- examples of the solid carrier include talc, kaolin, bentonite, diatomaceous earth, white carbon, and clay.
- examples of the liquid diluent include water, xylene, toluene, chlorobenzene, cyclohexane, cyclohexanone, dimethyl sulfoxide, dimethylformamide and alcohol. It is preferable to use different surfactants depending on their effects.
- As the emulsifier it is preferable to use polyoxyethylene alkylaryl ether, polyoxyethylene sorbitan monolaurate, or the like.
- lignin sulfonate and dibutyl naphthalene sulfonate are preferably used as the dispersant
- alkyl sulfonate and alkylphenyl sulfonate are preferably used as the wetting agent.
- Preparations include those that are used as they are and those that are diluted to a predetermined concentration with a diluent such as water.
- a diluent such as water.
- the concentration of the compound (I ( ⁇ )) or compound (I (+)) contained in the spray liquid is preferably in the range of 0.001 to 1.0%.
- Plant disease control method The plant disease control agent containing compound (I (-)) or compound (I (+)) is used for seed treatment, irrigation treatment, water surface treatment, etc. in addition to foliage treatment such as foliage spraying. It can also be applied by non-foliage treatment. In addition, when performing a non-foliage process, a labor can be reduced compared with the case where a foliage process is performed.
- a wettable powder or powder is mixed with the seed and stirred, or the seed is immersed in a diluted wettable powder to attach the drug to the seed.
- the amount of compound (I ( ⁇ )) or compound (I (+)) used for seed treatment is 0.01 to 10000 g, preferably 0.1 to 1000 g, per 100 kg of seeds.
- irrigation treatment is performed by treating the planting hole and its surroundings with granules, etc. at the time of transplanting seedlings, or treating the soil around the seeds and plants with granules, wettable powder, etc. .
- the amount of compound (I ( ⁇ )) or compound (I (+)) used in the irrigation treatment is 0.01 to 10000 g, preferably 0.1 to 1000 g, per 1 m 2 of agricultural or horticultural land.
- the amount of compound (I ( ⁇ )) or compound (I (+)) used for water surface treatment is 0.1 to 10000 g, preferably 1 to 1000 g, per 10 a paddy field.
- the concentration and amount used vary depending on the dosage form, time of use, method of use, place of use and target crop, and can be increased or decreased without sticking to the above range.
- the amount of compound (I (-)) or compound (I (+)) used for foliage spraying is 20 to 5000 g per ha of agricultural or horticultural land such as fields, rice fields, orchards and greenhouses, more preferably 50 to 2000 g.
- the compound (I ( ⁇ )) and the compound (I (+)) are combined with other active ingredients, for example, fungicides, insecticides, acaricides or herbicides as exemplified below, as plant disease control agents. It can also be used with improved performance.
- active ingredients for example, fungicides, insecticides, acaricides or herbicides as exemplified below, as plant disease control agents. It can also be used with improved performance.
- ⁇ Antimicrobial substances Acibenzolar S methyl, 2-phenylphenol (OPP), azaconazole, azoxystrobin, amisulbrom, bixaphene, benalaxyl, benomyl, bench avaricarb-isopropyl, bicarbonate, biphenyl, viteltanol, blasticidin-S, borax, bordeaux, boscalid, Bromuconazole, bronopol, bupirimate, secbutyramine, calcium polysulfide, captafor, captan, carbendazim, carboxin, carpropamide, quinomethionate, chloronebu, chloropicrin, chlorothalonil, clozolinate, cyazofamide, cyflufenamide, simoxanil, cyproconil, cyprodiazole Dazomet, debacarb, diclofuranide, diclocimet, dichrome Gin, Dichlorane, Diet
- ⁇ Insecticide / acaricide / nematicide> Abamectin, Acephate, Acrinathrin, Alanicarb, Aldicarb, Alletrin, Amitraz, Avermectin, Azadirachtin, Azamethifos, Azinphos-ethyl, Azinphos-methyl, Azocycline, Bacillus filmus, Bacillus subtilis, Bacillus thuringibulbbenthulbenbencarb , Benzoxymate, Bifenazite, Bifenthrin, Bioarethrin, Bioresmethrin, Bistriflurone, Buprofezin, Butocaboxin, Butoxycarboxyne, Kazusafos, Carbaryl, Carbofuran, Carbosulfan, Cartap, CGA50439, Chlordein, Chloretifol, Chlorfenapir Fenbinfoss,
- plant hormones jasmonic acid, brassinosteroid, gibberellin and the like.
- the seed treated with the above-mentioned plant disease control agent is also included in the category of the present invention. Since the treatment with the plant disease control agent has been described above, the description thereof is omitted. Seeds treated with a plant disease control agent can be used in the same manner as seeds not treated with seeds.
- the plant disease control agent containing the compound (I ( ⁇ )) only needs to contain the compound (I ( ⁇ )).
- the enantiomer of the compound (I ( ⁇ )), that is, (+) ⁇ It may contain a compound (I (+)) which is an enantiomer.
- the content of the compound (I (+)) which is the (+)-enantiomer is determined by the compound (I ( ⁇ )) (( ⁇ ) ⁇
- the content of the compound (I ( ⁇ )) is preferably 40% or less, more preferably 20% or less, and the compound (+)-enantiomer ( It is particularly preferred not to contain I (+)).
- the plant disease control agent containing compound (I (+)) only needs to contain compound (I (+)), and the enantiomer of compound (I (+)), that is, ( ⁇ ) -It may contain a compound (I (-)) which is an enantiomer.
- the content of the compound (I (+)) which is the ( ⁇ )-enantiomer is the compound (I (+)) ((+) ⁇
- the content of the compound (I (+)) is preferably 40% or less, more preferably 20% or less, and the compound (-)-enantiomer ( It is particularly preferred not to contain I ( ⁇ )).
- the obtained compound (7) was dissolved in isopropanol (0.53 ml), 2M aqueous sodium hydroxide solution (1.12 mmol) was added thereto, and the mixture was stirred at 60 ° C. for 1 hour. After completion of the reaction, water was added and extracted with ethyl acetate. The organic layer was washed with saturated brine and dried over anhydrous sodium sulfate. The solvent was distilled off, and the residue was purified by silica gel column chromatography to obtain compound (6) as a mixture of two isomers.
- High performance liquid chromatograph LC-9A (manufactured by Shimadzu Corporation)
- Semi-preparative column Product name “CHIRALPAK IA”, manufactured by Daicel Chemical Industries, Ltd., inner diameter 20 mm, length 250 mm, particle diameter 5 ⁇ m
- Sample concentration 50,000 ppm (in ethanol solution)
- Mobile phase hexane: ethanol (20: 1)
- Detection wavelength 254 nm
- the compound eluted first is the dextrorotatory enantiomer ((+)-enantiomer), and the compound eluted later is the levorotatory enantiomer (( -)-Enantiomer).
- the (+)-enantiomer is referred to as compound (1-1b)
- the ( ⁇ )-enantiomer is referred to as compound (1-1a).
- ⁇ Formulation example 3 (granule)> Compound (1-1a) 5 parts bentonite 43 parts clay 45 parts lignin sulfonate 7 parts were mixed uniformly, kneaded with water and processed into granules by an extrusion granulator to obtain granules.
- ⁇ Formulation example 4 (emulsion)> Compound (1-1a) 20 parts polyoxyethylene alkyl aryl ether 10 parts polyoxyethylene sorbitan monolaurate 3 parts Xylene 67 parts were mixed and dissolved uniformly to prepare an emulsion.
- ⁇ Formulation example 5 (wettable powder)> Compound (1-1b) 50 parts lignin sulfonate 5 parts alkyl sulfonate 3 parts diatomaceous earth 42 parts were pulverized and mixed to obtain a wettable powder, diluted with water and used.
- ⁇ Formulation example 6 (powder)> Compound (1-1b) 3 parts Clay 40 parts Talc 57 parts were ground and mixed and used as dust.
- ⁇ Formulation example 7 (granule)> Compound (1-1b) 5 parts bentonite 43 parts clay 45 parts lignin sulfonate 7 parts were mixed uniformly, kneaded with water, processed into granules by an extrusion granulator and dried to give granules.
- ⁇ Formulation Example 8 (emulsion)> Compound (1-1b) 20 parts polyoxyethylene alkyl aryl ether 10 parts polyoxyethylene sorbitan monolaurate 3 parts xylene 67 parts were mixed and dissolved uniformly to prepare an emulsion.
- ⁇ Test Example 1 Cucumber gray mold control effect test 1 by foliar spray treatment>
- the cotyledon cucumber variety: SHARP1 cultivated using a square plastic pot (6 cm ⁇ 6 cm)
- the product was diluted with water to a predetermined concentration (3.1 mg / L or 12.5 mg / L) and suspended at a rate of 1,000 L / ha.
- the sprayed leaves were air-dried and then placed on a paper disk (diameter 8 mm) soaked with a spore solution of gray mold fungus and kept at 20 ° C. under high humidity.
- Control value (%) (1 ⁇ (average morbidity in sprayed area / average illness in non-sprayed area)) ⁇ 100
- Example 2 Wheat red rust control effect test 1 by foliar spray treatment> Compound (1-1a) or compound (1-2a) water as in Formulation Example 1 was added to the second leaf wheat (variety: Norin 61) grown using a square plastic pot (6 cm ⁇ 6 cm).
- the product in the form of a summing agent is diluted with water to a predetermined concentration (0.8 mg / L) and suspended at 1,000 L / ha Sprayed at a rate of The sprayed leaves were air-dried and then spray-inoculated with spores of wheat red rust fungus (adjusted to 200 cells / field of view, added with Grameen S to 60 ppm), and kept at 25 ° C. under high humidity for 48 hours.
- Control value (%) (1 ⁇ (average morbidity in sprayed area / average illness in non-sprayed area)) ⁇ 100
- Example 3 Wheat powdery mildew control effect test 1 by foliar spray treatment> To the second leaf stage wheat (cultivar: Norin 61) grown using a square plastic pot (6 cm ⁇ 6 cm), a compound (1-1a) in the form of a wettable powder as in Preparation Example 1 The suspension was diluted with water to a predetermined concentration (12.5 mg / L) and sprayed at a rate of 1,000 L / ha. After airing the sprayed leaves, wheat seedlings infected with wheat powdery mildew were sprinkled with powdery mildew fungus. On the 8th and 11th days after the inoculation, the morbidity of wheat powdery mildew was examined according to the survey criteria shown in Table 4 above, and the control value was calculated in the same manner as in Test Example 2. The results are shown in Table 7.
- Control value (%) (1 ⁇ (Affected area ratio of treated area / Affected area ratio of untreated area)) ⁇ 100
- the results are shown in Tables 8 and 9.
- the growth was suppressed as described later, and thus the control value could not be measured.
- ⁇ Test Example 5 Harmful phytotoxicity by seed treatment for wheat seeds> By pot test, the phytotoxicity of growth suppression by seed treatment was evaluated. Processing amount is 2 ⁇ 200g After compound (1-1a) or (1-2a) dissolved in DMSO to ai / 100 kg seeds was smeared on wheat seeds in a vial, 8 wheat seeds were sown in 80 cm 2 pots. The lower water supply was controlled in the greenhouse, and the degree of wheat growth was investigated 20 days after sowing. The growth inhibition index was calculated from the criteria shown in Table 10. It shows that the smaller the growth inhibition index, the smaller the phytotoxicity of growth inhibition by chemical treatment.
- ⁇ Test Example 6 Necrosis phytotoxicity by seed treatment on wheat seeds> A pot test evaluated the phytotoxicity of necrosis by seed treatment. After the compound (1-1a) or (1-2a) dissolved in DMSO was applied to the wheat seeds in a vial so that the treatment amount was 2 to 200 g ai / 100 kg seeds, 8 wheat seeds were 80 cm 2. Seeded in pot. The lower water supply was controlled in a greenhouse, and the degree of necrosis of wheat (necrosis area ratio) was investigated 20 days after sowing. Using the criteria shown in Table 13, the necrosis index was calculated from the necrosis area ratio. The smaller the necrosis index, the less phytotoxicity that causes necrosis due to drug treatment.
- Example 7 Controlling effect of rice seedling disease by seed treatment> The pot test was used to evaluate the control effect of rice seedling disease by seed treatment. After the compound (1-1a) dissolved in DMSO so that the treatment amount is 80 g ai / 100 kg seeds was smeared on the rice seeds infected with the seedling disease in a vial, 16 rice seeds were put into a 50 cm 2 pot. Sowing. The lower water supply was controlled in the greenhouse, and the diseased seedling rate was investigated 20 days after sowing, and the control value was calculated in the same manner as in Test Example 4.
- Example 9 Necrosis phytotoxicity by seed treatment for rice seed> A pot test evaluated the phytotoxicity of necrosis by seed treatment. The compound (1-1a) dissolved in DMSO so that the treatment amount was 80 g ai / 100 kg seeds was spread on rice seeds in a vial, and then 16 rice seeds were sown in a 50 cm 2 pot. The lower water supply was controlled in the greenhouse, and after 20 days of sowing, the degree of necrosis of rice (necrosis area ratio) was investigated, and the necrosis index was calculated in the same manner as in Test Example 6.
- Compound (1-1a) or compound (1-2a) was dissolved in dimethyl sulfoxide and added to PDA medium (potato-dextrose-aggar medium) at around 60 ° C. After thoroughly mixing in an Erlenmeyer flask, the mixture was poured into a petri dish and solidified to prepare a plate medium containing compound (1-1a) or compound (1-2a) at a predetermined concentration.
- PDA medium potato-dextrose-aggar medium
- a test bacterium previously cultured on a plate medium was punched out with a cork borer having a diameter of 4 mm and inoculated on the drug-containing plate medium.
- each fungus was cultured at an appropriate temperature for growth (for example, LIST OF CULTURES 1996 microorganisms 10th edition, refer to the literature of the Fermentation Research Institute, etc.) for 1 to 7 days, and the growth of the fungus was measured by the fungus diameter.
- the growth degree of the bacteria obtained on the drug-containing plate medium was compared with the growth degree of the bacteria in the drug-free group, and the mycelial elongation suppression rate was determined by the following formula.
- R represents the hyphal elongation inhibition rate (%)
- dc represents the diameter of the fungus on the untreated plate
- dt represents the diameter of the fungus on the drug-treated plate.
- R 100 (dc ⁇ dt) / dc
- the abbreviation of the microbial species in Table 20 or 21 represents the following microbial species, respectively.
- Pn wheat blight (Phaeosphaeria nodorum) Ph: Wheat eye spot disease fungus (Pseudocercoporellaherpotrichoides) Mn: Wheat red snow rot fungus (Microdochiumnivale) Gg: Wheat Blight Fungus (Gaeumannomycesgraminis) Rs : Rhizoctonia solani Gf: Rice idiot fungus (Gibberellafujikuroi) Ro: Rice seedling blight (Rhizopusoryzae) Am: Apple spotted leaf disease (Alternariaalternata) Ss: Sclerotinia sclerotiorum Bc: Botrytis cinerea Gc: Glomerellacingurata Cb: Brown beet disease (Cercosporabeticola) ⁇ Test Example 11: Antibacterial test 2 against pathogenic bacteria> Antibacterial activity against various phytopathogenic fungi was tested.
- Compound (1-1b) or compound (1-2b) was dissolved in dimethyl sulfoxide and added to PDA medium (potato-dextrose-aggar medium) at around 60 ° C. After thoroughly mixing in an Erlenmeyer flask, the mixture was poured into a petri dish and solidified to prepare a plate medium containing compound (1-1b) or compound (1-2b) at a predetermined concentration.
- PDA medium potato-dextrose-aggar medium
- test bacteria previously cultured on the plate medium were punched out with a cork borer having a diameter of 4 mm and inoculated on the above-mentioned drug-containing plate medium. After inoculation, the cells were cultured for 1 to 7 days at a suitable temperature for growth of each fungus (for example, LIST OF CULTURES 1996 microorganisms 10th edition, see literature from the Institute for Fermentation, etc.).
- the growth degree of the bacteria obtained on the drug-containing plate medium was compared with the growth degree of the bacteria in the drug-free group, and the hyphal elongation inhibition rate was determined in the same manner as in Test Example 10.
- the control in this test example was an antibacterial test using compound (1-1a) and compound (1-2a) instead of compound (1-1b) and compound (1-2b), respectively. It is.
- the abbreviation of the microbial species in Table 22 or 23 represents the following microbial species, respectively.
- the sprayed leaves were air-dried and then placed on a paper disk (diameter 8 mm) soaked with a spore solution of gray mold fungus and kept at 20 ° C. under high humidity.
- a paper disk (diameter 8 mm) soaked with a spore solution of gray mold fungus and kept at 20 ° C. under high humidity.
- the morbidity of cucumber gray mold was investigated, and the control value was calculated in the same manner as in Test Example 1.
- both the compound (1-1b) and the compound (1-2b) showed a control value of 90% or more.
- Example 13 Wheat red rust control effect test 2 by foliar spray treatment> The second leaf stage wheat (cultivar: Norin 61) grown using a square plastic pot (6 cm ⁇ 6 cm) was mixed with water of compound (1-1b) or compound (1-2b) as in Preparation Example 5. The product in the form of a summing agent was diluted and suspended in water to a predetermined concentration (3.1 mg / L) and sprayed at a rate of 1,000 L / ha. The sprayed leaves were air-dried and then spray-inoculated with spores of wheat red rust fungus (adjusted to 200 cells / field of view, added with Grameen S to 60 ppm), and kept at 25 ° C. under high humidity for 48 hours. After that, it was managed in the greenhouse. On the 11th day after the inoculation, the morbidity of wheat red rust was investigated, and the control value was calculated in the same manner as in Test Example 2.
- both the compound (1-1b) and the compound (1-2b) showed a control value of 90% or more.
- ⁇ Test Example 14 Wheat powdery mildew control effect test 2 by foliar spray treatment> The second leaf stage wheat (cultivar: Norin 61) grown using a square plastic pot (6 cm ⁇ 6 cm) was mixed with water of compound (1-1b) or compound (1-2b) as in Preparation Example 5. The product in the form of a summing agent was diluted with water to a predetermined concentration (50 mg / L) and dispersed at a rate of 1,000 L / ha. After airing the sprayed leaves, wheat seedlings infected with wheat powdery mildew were sprinkled with powdery mildew fungus. On the 8th day after inoculation, the morbidity of wheat powdery mildew was investigated, and the control value was calculated in the same manner as in Test Example 1.
- both the compound (1-1b) and the compound (1-2b) showed a control value of 90% or more.
- the present invention is excellent in bactericidal properties against plant pathogens, it can be suitably used as an active ingredient of a control agent capable of controlling plant diseases.
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Abstract
Description
で示されるトリアゾール化合物であって、シクロペンタン環に結合している、-OH基、-R2基およびCH2-Ar基同士がシス型であり、(-)-エナンチオマーである、トリアゾール化合物である。
本発明に係るトリアゾール化合物の第1の態様は、式(I)
で示されるトリアゾール化合物であって、シクロペンタン環に結合している、-OH基、-R2基およびCH2-Ar基同士がシス型であり、(-)-エナンチオマーである、トリアゾール化合物(以下、「化合物I(-)」と称する)である。
化合物(I(-))および化合物(I(+))では、シクロペンタン環に結合している、-OH基、-R2基および-CH2-Ar基同士(シクロペンタン環1位と2位、および1位と5位)は、シクロペンタン環を基準にして互いにシス型である。当該-OH基、-R2基およびCH2-Ar基同士がシス型である化合物としては、1対のエナンチオマーが存在し、化合物(I(-))は、このうちの(-)-エナンチオマーであり、化合物(I(+))は、このうちの(+)-エナンチオマーである。なお、本明細書において、「(-)-エナンチオマー」とは、ナトリウムD線の直線偏光の振動面を左に回転させるエナンチオマーのことを指し、「(+)-エナンチオマー」とは、ナトリウムD線の直線偏光の振動面を右に回転させるエナンチオマーのことを指す。
で示されるトリアゾール化合物であって、シクロペンタン環に結合している、-OH基、-CH2-X1基および置換または無置換のベンジル基同士がシス型であり、(-)-エナンチオマーである、トリアゾール化合物を挙げることができる。
(1)製造工程
以下、化合物(I(-))、および化合物(I(+))の製造方法について説明する。化合物(I(-))、および化合物(I(+))は、例えば、以下の工程A~Eによって製造することができる。
化合物(I(-))および化合物(I(+))は何れも、化合物(I(-))およびその鏡像異性体である化合物(I(+))からなるラセミ体(以下、化合物(I’)という)から、分取分離によって得ることができる。
化合物(I(-))の製造方法および化合物(I(+))の製造方法の一実施形態では、下記式(II)で示される化合物における所定の官能基をハロゲン原子で置換することにより、化合物(I’)を得る工程(工程B)を含む(下記反応式(1)参照)。下記式(II)で示される化合物は、シクロペンタン環第2位の置換基上に脱離基(X3)を有する化合物である。以下、式(II)で示される化合物を「化合物(II)」と称する。なお、下記反応式(1)では、化合物(I’)を式(Ib)により示しているが、これは、式(I)と実質的に同一の構造を表している。
(反応式(1))
工程Bで使用される化合物(II)のうち、例えば、脱離基が置換スルホニルオキシ基である、式(IIa)で示される化合物(以下、「化合物IIa」と称する)は、下記式(III)で示される化合物(以下、「化合物(III)」と称する)と、置換スルホニルクロリドと、を反応させる工程(工程C)により得られる(下記反応式(2)参照)。(反応式(2))
工程Cで使用される化合物(III)は、公知の方法(例えば、特許文献4参照)を用いて製造すればよい。ただし、2位にヒドロキシメチル基およびアルキル基を有する、下記式(IIIa)で示される化合物(以下、化合物(IIIa))については、以下に示す合成法を用いて製造することが好ましい。
(反応式(3))
まず、本工程Dにおいて、化合物(VI)をオキシラン化して、化合物(V)を得る工程(工程D1)について説明する。
次に、本工程Dにおいて、化合物(V)と化合物(X)とを反応させて、化合物(IV)を得る工程(工程D2)について説明する。
(反応式(4))
続いて、本工程Dにおいて、化合物(IV)の保護基を脱保護することにより、化合物(IIIa)を得る工程(工程D3)について説明する。
工程Dで使用される化合物(VI)は、以下の方法により好適に合成可能である。
(反応式(5))
本工程Eにおいて、化合物(IX)をヒドロキシメチル化して化合物(VIII)を得る工程(工程E1)においては、溶媒中、塩基存在下、化合物(IX)をホルムアルデヒドと反応させる方法を用いればよい。
次に、本工程Eにおいて、化合物(VIII)のヒドロキシ基に保護基を導入し、化合物(VII)を得る工程(工程E2)について説明する。
続いて、本工程Eにおいて、化合物(VII)を加水分解および脱炭酸して化合物(VI)を得る工程(工程E3)について説明する。
使用される溶媒としては、反応に関与しなければ特に限定されないが、通常、ジエチルエーテル、テトラヒドロフランおよびジオキサン等のエーテル類;メタノール、エタノールおよびイソプロパノール等のアルコール類;ベンゼン、トルエンおよびキシレン等の芳香族炭化水素類;石油エーテル、ヘキサンおよびメチルシクロヘキサン等の脂肪族炭化水素類;ならびにN,N-ジメチルホルムアミド、N,N-ジメチルアセトアミドおよびN-メチル-2-ピロリジノン等のアミド類等を挙げることができる。この他、溶媒としては、水、アセトニトリル、酢酸エチル、無水酢酸、酢酸、ピリジンおよびジメチルスルホキシド等も使用可能である。これらの溶媒は、2種類以上を混合して使用してもよい。
上述の溶媒には、塩基または酸を添加してもよい。
本発明に係るトリアゾール化合物(化合物(I(-))および化合物(I(+)))の植物病害防除剤としての有用性、およびこれを用いた植物病害防除方法について以下に説明する。
本発明に係る植物病害防除剤の有用性について説明する。化合物(I(-))および化合物(I(+))は何れも、茎葉病害、種子伝染病害および土壌伝染病害を含む広範な植物病害に対して防除効果を奏する。適用病害の例として以下が挙げられる:ダイズさび病(Phakopsora pachyrhizi、Phakopsora meibomiae)、イネいもち病(Pyricularia grisea、Pyricularia oryzae)、イネごま葉枯病 (Cochliobolus miyabeanus)、イネ紋枯病(Rhizoctonia solani)、リンゴうどんこ病 (Podosphaera leucotricha)、リンゴ黒星病 (Venturia inaequalis)、リンゴモリニア病 (Monilinia mali)、リンゴ斑点落葉病 (Alternaria alternata)、リンゴ腐乱病 (Valsa mali)、ナシ黒斑病 (Alternaria kikuchiana)、ナシうどんこ病 (Phyllactinia pyri)、ナシ赤星病 (Gymnosporangium asiaticum)、ナシ黒星病 (Venturia nashicola)、ブドウうどんこ病 (Uncinula necator)、ブドウべと病 (Plasmopara viticola)、ブドウ晩腐病(炭疽病) (Glomerella cingulata)、オオムギうどんこ病 (Erysiphe graminisf. sp hordei)、オオムギ黒さび病(Puccinia graminis)、オオムギ黄さび病 (Puccinia striiformis)、オオムギ斑葉病 (Pyrenophora graminea)、オオムギ雲形病(Rhynchosporium secalis)、オオムギ裸黒穂病 (Ustilago nuda)、コムギうどんこ病 (Erysiphe graminisf. sp tritici)、コムギ赤さび病(Puccinia recondita)、コムギ黄さび病 (Puccinia striiformis)、コムギ眼紋病 (Pseudocercosporella herpotrichoides)、コムギ赤かび病 (Fusarium graminearum)、コムギ紅色雪腐病 (Microdochium nivale)、コムギ立枯れ病(Gaeumannomyces graminis)、コムギふ枯病 (Phaeosphaeria nodorum)、コムギ葉枯病 (Septoria tritici)、ウリ類うどんこ病 (Sphaerotheca fuliginea)、ウリ類の炭疸病 (Colletotrichum lagenarium)、キュウリべと病 (Pseudoperonospora cubensis)、キュウリ灰色疫病(Phytophthora capsici)、トマトうどんこ病 (Erysiphe cichoracearum)、トマト輪紋病 (Alternaria solani)、ナスうどんこ病 (Erysiphe cichoracearum)、イチゴうどんこ病(Sphaerotheca humuli)、タバコうどんこ病 (Erysiphe cichoracearum)、テンサイ褐斑病 (Cercospora beticola)、核果類果樹の灰星病 (Monilinia fructicola)、種々の作物をおかす灰色かび病 (Botrytis cinerea)、菌核病 (Sclerotinia sclerotiorum)、ブドウのさび病(Phakopsora ampelopsidis)、タバコの赤星病(Alternaria longipes)、ジャカイモノ夏疫病(Alternaria solani)、ダイズの褐紋病(Septoria glycines)、ダイズの紫斑病(Cercospora kikuchii)、イネ白葉枯病 (Xanthomonas oryzae)、イネ小黒菌核病 (Helminthosporium sigmoideun)、イネばか苗病 (Gibberella fujikuroi)、イネ苗立枯病 (Pythium aphanidermatum、Rhizopus oryzae)、トウモロコシ黒穂病 (Ustillaga maydis)、スイカのつる割病(Fusarium oxysporum f.sp.niveum)、キュウリのつる割病(Fusarim oxysporum f.sp.cucumerinum)、カンキツ青かび(Penicillium italicum)およびダイコンの萎黄病(Fusarium oxysporumf.sp.raphani)等。
また、化合物(I(-))および化合物(I(+))は何れも、広汎な作物および園芸植物に対して、その生長を調節して収量を増加させる効果あるいはその品質を高める効果を示す。かかる作物の例としては、コムギ、大麦および燕麦などの麦類、稲、ナタネ、サトウキビ、トウモロコシ、メイズ、大豆、エンドウ、落花生、シュガービート、キャベツ、ニンニク、ダイコン、ニンジン、リンゴ、ナシ、みかん、オレンジおよびレモンなどの柑橘類、モモ、桜桃、アボガド、マンゴー、パパイヤ、トウガラシ、キュウリ、メロン、イチゴ、タバコ、トマト、ナス、芝、菊、ツツジ、ならびにその他の観賞用植物が挙げられる。
化合物(I(-))または化合物(I(+))を有効成分として含む植物病害防除剤は、通常、固体担体、液体担体、界面活性剤またはその他の製剤補助剤と混合して粉剤、水和剤、粒剤および乳剤などの種々の形態に製剤して使用する。
化合物(I(-))または化合物(I(+))を含む植物病害防除剤は、茎葉散布といった茎葉処理に加えて、種子処理、潅注処理、および水面処理などの非茎葉処理によっても施用できる。なお、非茎葉処理を行う場合には、茎葉処理を行う場合に比べて、労力を低減させることができる。
<抗菌性物質>
アシベンゾラーSメチル、2-フェニルフェノール(OPP)、アザコナゾール、アゾキシストロビン、アミスルブロム、ビキサフェン、ベナラキシル、ベノミル、ベンチアバリカルブ-イソプロピル、ビカルボネイト、ビフェニル、ビテルタノール、ブラスチシジン-S、ボラックス、ボルドー液、ボスカリド、ブロムコナゾール、ブロノポール、ブピリメート、セックブチラミン、カルシウムポリスルフィド、カプタフォル、キャプタン、カルベンダジム、カルボキシン、カルプロパミド、キノメチオネート、クロロネブ、クロロピクリン、クロロタロニル、クロゾリネート、シアゾファミド、シフルフェナミド、シモキサニル、シプロコナゾール、シプロジニル、ダゾメット、デバカルブ、ジクロフルアニド、ジクロシメット、ジクロメジン、ジクロラン、ジエトフェンカルブ、ジフェノコナゾール、ジフルメトリン、ジメトモルフ、ジメトキシストロビン、ジニコナゾール、ジノカップ、ジフェニルアミン、ジチアノン、ドデモルフ、ドジン、エディフェンフォス、エポキシコナゾール、エタポキサム、エトキシキン、エトリジアゾール、エネストロブリン、ファモキサドン、フェナミドン、フェナリモル、フェンブコナゾール、フェンフラム、フェンヘキサミド、フェノキサニル、フェンピクロニル、フェンプロピジン、フェンプロピモルフ、フェンチン、フェルバム、フェリムゾン、フルアジナム、フルジオキソニル、フルモルフ、フルオロミド、フルオキサストロビン、フルキンコナゾール、フルシラゾール、フルスルファミド、フルトラニル、フルトリアフォル、フォルペット、フォセチル-アルミニウム、フベリダゾール、フララキシル、フラメトピル、フルオピコリド、フルオピラム、グアザチン、ヘキサクロロベンゼン、ヘキサコナゾール、ヒメキサゾール、イマザリル、イミベンコナゾール、イミノクタジン、イプコナゾール、イプロベンフォス、イプロジオン、イプロバリカルブ、イソプロチオラン、イソピラザム、イソチアニル、カスガマイシン、銅調製物例えば水酸化銅、ナフテン酸銅、オキシ塩化銅、硫酸銅、酸化銅、オキシン-銅、クレゾキシムメチル、マンコカッパー、マンコゼブ、マネブ、マンジプロパミド、メパニピリム、メプロニル、メタラキシル、メトコナゾール、メチラム、メトミノスウトロビン、ミルジオマイシン、ミクロブタニル、ニトロタル-イソプロピル、ヌアリモル、オフレース、オキサジキシル、オキソリニック酸、オキスポコナゾール、オキシカルボキシン、オキシテトラサイクリン、ペフラゾエート、オリサストロビン、ペンコナゾール、ペンシクロン、ペンチオピラド、ピリベンカルブ、フサライド、ピコキシストロビン、ピペラリン、ポリオキシン、プロベナゾール、プロクロラズ、プロシミドン、プロパモカルブ、プロピコナゾール、プロピネブ、プロキナジド、プロチオコナゾール、ピラクロストロビン、ピラゾフォス、ピリフェノックス、ピリメタニル、ピロキロン、キノキシフェン、キントゼン、シルチオファム、シメコナゾール、スピロキサミン、硫黄および硫黄調製物、テブコナゾール、テクロフタラム、テクナゼン、テトラコナゾール、チアベンダゾール、チフルザミド、チオファネート-メチル、チラム、チアジニル、トルクロフォス-メチル、トリルフルアニド、トリアジメフォン、トリアジメノール、トリアゾキシド、トリシクラゾール、トリデモルフ、トリフロキシストロビン、トリフルミゾール、トリホリン、トリチコナゾール、バリダマイシン、ビンクロゾリン、ジネブ、ジラム、ゾキサミド、アミスルブロム、セダキサン、フルチアニル、バリフェナール、アメトクトラジン、ジモキシストロビン、メトラフェノン、ヒドロキシイソキサゾール、およびメタスルホカルブ等。
<殺虫剤/殺ダニ剤/殺線虫剤>
アバメクチン、アセフェート、アクリナトリン、アラニカルブ、アルジカルブ、アレトリン、アミトラズ、アベルメクチン、アザジラクチン、アザメチフォス、アジンフォス-エチル、アジンフォス-メチル、アゾサイクロチン、バシルス・フィルムス、バシルス・ズブチルス、バシルス・ツリンジエンシス、ベンジオカルブ、ベンフラカルブ、ベンスルタップ、ベンゾキシメイト、ビフェナゼイト、ビフェントリン、ビオアレトリン、ビオレスメトリン、ビストリフルロン、ブプロフェジン、ブトカルボキシン、ブトキシカルボキシン、カズサフォス、カルバリル、カルボフラン、カルボスルファン、カータップ、CGA50439、クロルデイン、クロレトキシフォス、クロルフェナピル、クロルフェンビンフォス、クロルフルアズロン、クロルメフォス、クロルピリフォス、クロルピリフォスメチル、クロマフェノザイド、クロフェンテジン、クロチアニジン、クロラントラリニプロール、コウンパフォス、クリオライト、シアノフォス、シクロプロトリン、シフルトリン、シハロトリン、シヘキサチン、シペルメトリン、シフェノトリン、シロマジン、シアザピル、シエノピラフェン、DCIP、DDT、デルタメトリン、デメトン-S-メチル、ジアフェンチウロン、ジアジノン、ジクロロフェン、ジクロロプロペン、ジクロルボス、ジコフォル、ジクロトフォス、ジシクラニル、ジフルベンズロン、ジメトエート、ジメチルビンフォス、ジノブトン、ジノテフラン、エマメクチン、エンドスルファン、EPN、エスフェンバレレート、エチオフェンカルブ、エチオン、エチプロール、エトフェンプロックス、エトプロフォス、エトキサゾール、ファムフル、フェナミフォス、フェナザキン、フェンブタチンオキシド、フェニトロチオン、フェノブカルブ、フェノチオカルブ、フェノキシカルブ、フェンプロパトリン、フェンピロキシメート、フェンチオン、フェンバレレート、フイプロニル、フロニカミド、フルアクロピリム、フルシクロクスロン、フルシトリネート、フルフェノクスロン、フルメトリン、フルバリネート、フルベンジアミド、フォルメタネート、フォスチアゼート、ハルフェンプロクス、フラチオカルブ、ハロヘノジド、ガンマ-HCH、ヘプテノフォス、ヘキサフルムロン、ヘキシチアゾックス、ヒドラメチルノン、イミダクロプリド、イミプロトリン、インドキサカルブ、イソプロカルブ、イソキサチオン、ルフェヌロン、マラチオン、メカルバム、メタム、メタミドフォス、メチダチオン、メチオカルブ、メトミル、メトプレン、メトスリン、メトキシフェノジド、メトルカルブ、ミルベメクチン、モノクロトフォス、ナレド、ニコチン、ニテンピラム、ノバルロン、ノビフルムロン、オメトエート、オキサミル、オキシデメトンメチル、パラチオン、パーメトリン、フェントエート、フォレート、フォサロン、フォスメット、フォスファミドン、フォキシム、ピリミカルブ、ピリミフォスメチル、プロフェノフォス、プロポクスル、プロチオフォス、ピメトロジン、ピラクロフォス、ピレスリン、ピリダベン、ピリダリル、ピリミジフェン、ピリプロキシフェン、ピリフルキナゾン、ピリプロール、キナルフォス、シラフルオフェン、スピノサド、スピロジクロフェン、スピロメシフェン、スピロテトラマット、スルフラミド、スルフォテップ、SZI-121、テブフェノジド、テブフェンピラド、テブピリムフォス、テフルベンズロン、テフルトリン、テメフォス、テルブフォス、テトラクロルビンフォス、チアクロプリド、チアメトキサム、チオジカルブ、チオファノックス、チオメトン、トルフェンピラド、トラロメトリン、トラロピリル、トリアザメート、トリアゾフォス、トリクロルフオン、トリフルムロン、バミドチオン、バリフェナル、XMC、キシリルカルブ、イミシアホス、およびレピメクチン等。
<植物成長調節剤>
アンシミドール、6-ベンジルアミノプリン、パクロブトラゾール、ジクロブトラゾール、ウニコナゾール、メチルシクロプロペン、メピコートクロリド、エセフォン、クロルメコートクロライド、イナベンフィド、プロヘキサジオンおよびその塩、ならびにトリネキサパックエチル等。また、植物ホルモンとして、ジャスモン酸、ブラシノステロイド、およびジベレリン等。
異性体(a):
収率:18%
異性体(b):
収率:76%
<製造例2:5-(4-クロロベンジル)-2-メトキシメトキシメチル-2-メチルシクロペンタノン(化合物(6))の合成>
収率:66%
<製造例3:5-(4-クロロベンジル)-2-メトキシメトキシメチル-2-メチル-1-(1H-1,2,4-トリアゾール-1-イルメチル)シクロペンタノール(化合物(4))の合成>
収率:71%
<製造例4:5-(4-クロロベンジル)-2-ヒドロキシメチル-2-メチル-1-(1H-1,2,4-トリアゾール-1-イルメチル)シクロペンタノール(化合物(3))の合成>
<製造例5:(1,2-シス、1,5-シス)-5-(4-クロロベンジル)-2-メチル-2-[(4-メチルフェニル)スルホニルオキシメチル]-1-(1H-1,2,4-トリアゾール-1-イルメチル)シクロペンタノール(化合物(2))の合成>
収率:55%
<製造例6:(1,2-シス、1,5-シス)-5-(4-クロロベンジル)-2-クロロメチル-2-メチル-1-(1H-1,2,4-トリアゾール-1-イルメチル)シクロペンタノール(化合物(1’))の合成>
収率:58%
<製造例7:(1,2-シス、1,5-シス)-5-(4-クロロベンジル)-2-クロロメチル-2-メチル-1-(1H-1,2,4-トリアゾール-1-イルメチル)シクロペンタノール(-)-エナンチオマーおよび(+)-エナンチオマーの調製>
ラセミ体の化合物(1’)をエタノールに溶解し、アミローストリス(3,5-ジメチルフェニルカルバメート)がシリカゲル担体に固定化されたセミ分取カラムをつないだ高速液体クロマトグラフィー(HPLC)に供し、分取分離を行った。
高速液体クロマトグラフ:LC-9A(島津製作所社製)
セミ分取カラム:製品名「CHIRALPAK IA」、ダイセル化学工業社製、内径20mm、長さ250mm、粒子径5μm
サンプル濃度:50,000ppm(エタノール液中)
移動相:ヘキサン:エタノール(20:1)
流速:3.5ml/min
検出波長:254nm
上記条件下で分離したところ、溶出時間が異なる2つのピークが検出された。それぞれのピークに由来する化合物の比旋光度を測定した結果、最初に溶出された化合物は、右旋性エナンチオマー((+)-エナンチオマー)であり、後に溶出された化合物は、左旋性エナンチオマー((-)-エナンチオマー)であった。以下、当該(+)-エナンチオマーを化合物(1-1b)と称し、当該(-)-エナンチオマーを化合物(1-1a)と称する。
化合物(1-1b)の平均比旋光度:
[α]D 22=+21.9°(2mlのクロロホルムあたり20mg)
化合物(1-1a)の平均比旋光度:
[α]D 22=-21.2°(2mlのクロロホルムあたり20mg)
<製造例8:5-(4-フルオロベンジル)-2-クロロメチル-2-メチル-1-(1H-1,2,4-トリアゾール-1-イルメチル)シクロペンタノール(-)-エナンチオマーおよび(+)-エナンチオマーの製造>
出発原料として、1-(4-クロロベンジル)-3-メチル-2-オキソシクロペンタンカルボン酸メチルエステルの代わりに、1-(4-フルオロベンジル)-3-メチル-2-オキソシクロペンタンカルボン酸メチルエステルを用いて、上記製造例1~7に準じた方法で、(1,2-シス、1,5-シス)-5-(4-フルオロベンジル)-2-クロロメチル-2-メチル-1-(1H-1,2,4-トリアゾール-1-イルメチル)シクロペンタノールの(-)-エナンチオマーおよび(+)-エナンチオマーを製造した。以下、この化合物の(-)-エナンチオマーを、化合物(1-2a)と称する。同様にして分離された(+)-エナンチオマーを、以下、化合物(1-2b)と称する。
<製造例9:5-ベンジル-2-クロロメチル-2-メチル-1-(1H-1,2,4-トリアゾール-1-イルメチル)シクロペンタノール(-)-エナンチオマーおよび(+)-エナンチオマーの調製>
出発原料として、1-(4-クロロベンジル)-3-メチル-2-オキソシクロペンタンカルボン酸メチルエステルの代わりに、1-ベンジル-3-メチル-2-オキソシクロペンタンカルボン酸メチルエステルを用いて、上記製造例1~7に準じた方法で、(1,2-シス、1,5-シス)-5-ベンジル-2-クロロメチル-2-メチル-1-(1H-1,2,4-トリアゾール-1-イルメチル)シクロペンタノールの(-)-エナンチオマーおよび(+)-エナンチオマーを製造した。
<製剤例1(水和剤)>
化合物(1-1a) 50 部
リグニンスルホン酸塩 5 部
アルキルスルホン酸塩 3 部
珪藻土 42 部
を粉砕混合して水和剤とし、水で希釈して使用した。
<製剤例2(粉剤)>
化合物(1-1a) 3 部
クレー 40 部
タルク 57 部
を粉砕混合し、散粉として使用した。
<製剤例3(粒剤)>
化合物(1-1a) 5 部
ベントナイト 43 部
クレー 45 部
リグニンスルホン酸塩 7 部
を均一に混合しさらに水を加えて練り合わせ、押し出し式造粒機で粒状に加工乾燥して粒剤とした。
<製剤例4(乳剤)>
化合物(1-1a) 20 部
ポリオキシエチレンアルキルアリールエーテル 10 部
ポリオキシエチレンソルビタンモノラウレート 3 部
キシレン 67 部
を均一に混合溶解して乳剤とした。
<製剤例5(水和剤)>
化合物(1-1b) 50 部
リグニンスルホン酸塩 5 部
アルキルスルホン酸塩 3 部
珪藻土 42 部
を粉砕混合して水和剤とし、水で希釈して使用した。
<製剤例6(粉剤)>
化合物(1-1b) 3 部
クレー 40 部
タルク 57 部
を粉砕混合し、散粉として使用した。
<製剤例7(粒剤)>
化合物(1-1b) 5 部
ベントナイト 43 部
クレー 45 部
リグニンスルホン酸塩 7 部
を均一に混合しさらに水を加えて練り合わせ、押し出し式造粒機で粒状に加工乾燥して粒剤とした。
<製剤例8(乳剤)>
化合物(1-1b) 20 部
ポリオキシエチレンアルキルアリールエーテル 10 部
ポリオキシエチレンソルビタンモノラウレート 3 部
キシレン 67 部
を均一に混合溶解して乳剤とした。
角型プラスチックポット(6cm×6cm)を用いて栽培した子葉期のキュウリ(品種:SHARP1)に、製剤例1のような化合物(1-1a)または化合物(1-2a)の水和剤形態のものを、水で所定濃度(3.1mg/Lまたは12.5mg/L)に希釈懸濁し、1,000L/haの割合で散布した。散布葉を風乾した後、灰色かび病菌の胞子液をしみこませたペーパーディスク(直径8mm)を乗せ、20℃高湿度条件下に保った。接種後、4日目にキュウリ灰色かび病の罹病度を表1に示す調査基準により調査して、防除価を下記式により算出した。
防除価(%)=(1-(散布区の平均罹病度/無散布区の平均罹病度))×100
角型プラスチックポット(6cm×6cm)を用いて栽培した第2葉期のコムギ(品種:農林61号)に、製剤例1のような化合物(1-1a)または化合物(1-2a)の水和剤形態のものを、水で所定濃度(0.8mg/L)に希釈懸濁し、1,000L/ha
の割合で散布した。散布葉を風乾した後、コムギ赤さび病菌の胞子(200個/視野に調整、60ppmとなるようにグラミンSを添加)を噴霧接種し、25℃高湿度条件下に48時間保った。その後は温室内で管理した。接種後、11日目にコムギ赤さび病の罹病度を表4に示す調査基準により調査して、防除価を下記式により算出した。
防除価(%)=(1-(散布区の平均罹病度/無散布区の平均罹病度))×100
角型プラスチックポット(6cm×6cm)を用いて栽培した第2葉期のコムギ(品種:農林61号)に、製剤例1のような化合物(1-1a)の水和剤形態のものを、水で所定濃度(12.5mg/L)に希釈懸濁し、1,000L/haの割合で散布した。散布葉を風乾した後、コムギうどんこ病に感染したコムギ苗から、うどんこ病菌をふりかけ接種した。接種後、8、11日目にコムギうどんこ病の罹病度を上記した表4に示す調査基準により調査して、試験例2と同様に防除価を算出した。結果を表7に示す。
ポット試験により、種子処理によるコムギ赤さび病の防除効果を評価した。処理量が20g ai/100kg seedsとなるようにDMSOに溶解した化合物(1-1a)または(1-2a)をバイアル内でコムギ種子に塗沫した後、8粒のコムギ種子を80cm2ポットに播種した。温室内で下部給水管理し、播種21日後にコムギ赤さび病菌を接種し、湿箱に2日間保管した。その後、再び温室内で下部給水管理し、接種12日後に、罹病面積率を調査し、下記式により防除価を算出した。
防除価(%)=(1-(処理区罹病面積率/無処理区罹病面積率))×100
結果を表8および9に示す。化合物(1-2b)を含む薬剤で処理した種子では、後述するように生育が抑制されていたため、防除価を測定することができなかった。
ポット試験により、種子処理による生育抑制の薬害を評価した。処理量が2~200g
ai/100kg seedsとなるようにDMSOに溶解した化合物(1-1a)または(1-2a)をバイアル内でコムギ種子に塗沫した後、8粒のコムギ種子を80cm2ポットに播種した。温室内で下部給水管理し、播種20日後にコムギの生育程度を調査した。表10に示す基準から生育抑制指数を算出した。生育抑制指数が小さいほど、薬剤処理による生育抑制の薬害が小さいことを示している。
ポット試験により、種子処理によるネクロシスの薬害を評価した。処理量が2~200g ai/100kg seedsとなるようにDMSOに溶解した化合物(1-1a)または(1-2a)をバイアル内でコムギ種子に塗沫した後、8粒のコムギ種子を80cm2ポットに播種した。温室内で下部給水管理し、播種20日後にコムギのネクロシスの度合い(ネクロシス面積率)を調査した。表13に示す基準を用いて、ネクロシス面積率からネクロシス指数を算出した。ネクロシス指数が小さいほど、薬剤処理によるネクロシスを起こす薬害が小さいことを示している。
ポット試験により、種子処理によるイネばか苗病の防除効果を評価した。処理量が80g ai/100kg seedsとなるようにDMSOに溶解した化合物(1-1a)をバイアル内でばか苗病に感染したイネ種子に塗沫した後、16粒のイネ種子を50cm2ポットに播種した。温室内で下部給水管理し、播種20日後に、罹病苗率を調査し、試験例4と同様にして防除価を算出した。
ポット試験により、種子処理による生育抑制の薬害を評価した。処理量が80g ai/100kg seedsとなるようにDMSOに溶解した化合物(1-1a)をバイアル内でイネ種子に塗沫した後、16粒のイネ種子を50cm2ポットに播種した。温室内で下部給水管理し、播種20日後に、イネの生育程度を調査し、試験例5と同様にして生育抑制指数を算出した。
ポット試験により、種子処理によるネクロシスの薬害を評価した。処理量が80g ai/100kg seedsとなるようにDMSOに溶解した化合物(1-1a)をバイアル内でイネ種子に塗沫した後、16粒のイネ種子を50cm2ポットに播種した。温室内で下部給水管理し、播種20日後に、イネのネクロシスの度合い(ネクロシス面積率)を調査し、試験例6と同様にしてネクロシス指数を算出した。
本試験例では、各種植物病原性糸状菌に対する抗菌性を試験した。
R=100(dc-dt)/dc
得られた結果を、表19に示す基準にしたがって5段階評価した。抗菌性指数が大きいほど、抗菌性に優れていることを示す。
P.h:コムギ眼紋病菌 (Pseudocercoporellaherpotrichoides)
M.n:コムギ紅色雪腐病菌 (Microdochiumnivale)
G.g:コムギ立枯れ病菌 (Gaeumannomycesgraminis)
R.s:イネ紋枯病菌 (Rhizoctonia solani)
G.f:イネばか苗病菌 (Gibberellafujikuroi)
R.o:イネ苗立枯病 (Rhizopusoryzae)
A.m:リンゴ斑点落葉病 (Alternariaalternata)
S.s:スクレロチニア(菌核) (Sclerotinia sclerotiorum)
B.c:灰色かび病菌 (Botrytis cinerea)
G.c:炭疽病菌 (Glomerellacingurata)
C.b:テンサイ褐班病 (Cercosporabeticola)
<試験例11:病原菌に対する抗菌性試験2>
各種植物病原性糸状菌に対する抗菌性を試験した。
P.g:オオムギ斑葉病菌 (Pyrenophoragraminea)
U.n:オオムギ裸黒穂病菌 (Ustilagonuda)
F.c:キュウリつる割れ (Fusariumoxysporum)
P.i:カンキツ青かび (Penicilliumitalicum)
<試験例12:茎葉散布処理によるキュウリ灰色かび病防除効果試験2>
角型プラスチックポット(6cm×6cm)を用いて栽培した子葉期のキュウリ(品種:SHARP1)に、製剤例5のような化合物(1-1b)または化合物(1-2b)の水和剤形態のものを、水で所定濃度(50mg/L)に希釈懸濁し、1,000L/haの割合で散布した。散布葉を風乾した後、灰色かび病菌の胞子液をしみこませたペーパーディスク(直径8mm)を乗せ、20℃高湿度条件下に保った。接種後、4日目にキュウリ灰色かび病の罹病度を調査して、防除価を試験例1と同様にして算出した。
角型プラスチックポット(6cm×6cm)を用いて栽培した第2葉期のコムギ(品種:農林61号)に、製剤例5のような化合物(1-1b)または化合物(1-2b)の水和剤形態のものを、水で所定濃度(3.1mg/L)に希釈懸濁し、1,000L/haの割合で散布した。散布葉を風乾した後、コムギ赤さび病菌の胞子(200個/視野に調整、60ppmとなるようにグラミンSを添加)を噴霧接種し、25℃高湿度条件下に48時間保った。その後は温室内で管理した。接種後、11日目にコムギ赤さび病の罹病度を調査して、試験例2と同様にして防除価を算出した。
角型プラスチックポット(6cm×6cm)を用いて栽培した第2葉期のコムギ(品種:農林61号)に、製剤例5のような化合物(1-1b)または化合物(1-2b)の水和剤形態のものを、水で所定濃度(50mg/L)に希釈懸濁し、1,000L/haの割合で散布した。散布葉を風乾した後、コムギうどんこ病に感染したコムギ苗から、うどんこ病菌をふりかけ接種した。接種後、8日目にコムギうどんこ病の罹病度を調査して、試験例1と同様にして防除価を算出した。
Claims (10)
- mが1であり、X2がフッ素原子または塩素原子であることを特徴とする請求項2に記載のトリアゾール化合物。
- mが1であり、X2がフッ素原子または塩素原子であることを特徴とする請求項5に記載のトリアゾール化合物。
- 請求項1~3の何れか1項に記載のトリアゾール化合物を有効成分として含有することを特徴とする植物病害防除剤。
- 請求項4~6の何れか1項に記載のトリアゾール化合物を有効成分として含有することを特徴とする植物病害防除剤。
- 請求項7または8に記載の植物病害防除剤を用いて茎葉処理または非茎葉処理を行う工程を含む、植物病害防除方法。
- 請求項7に記載の植物病害防除剤により処理した種子。
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| JP5502854B2 (ja) | 2008-05-08 | 2014-05-28 | ビーエーエスエフ ソシエタス・ヨーロピア | 菌類感染から大豆を保護する方法 |
| AU2010329387B2 (en) | 2009-12-08 | 2014-01-16 | Kureha Corporation | Azole derivatives and methods for producing the same, intermediate compounds for the derivatives and methods for producing the same, and agro-horticultural agents and industrial material protecting agents containing the derivatives |
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2012
- 2012-05-30 CN CN201280026419.3A patent/CN103596934B/zh not_active Expired - Fee Related
- 2012-05-30 US US14/122,944 patent/US9253983B2/en not_active Expired - Fee Related
- 2012-05-30 JP JP2013518133A patent/JPWO2012165499A1/ja not_active Ceased
- 2012-05-30 EP EP12792524.6A patent/EP2716634A4/en not_active Withdrawn
- 2012-05-30 CN CN201410810475.7A patent/CN104529918A/zh active Pending
- 2012-05-30 WO PCT/JP2012/063976 patent/WO2012165499A1/ja not_active Ceased
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Also Published As
| Publication number | Publication date |
|---|---|
| CN104529918A (zh) | 2015-04-22 |
| JPWO2012165499A1 (ja) | 2015-02-23 |
| EP2716634A1 (en) | 2014-04-09 |
| US9253983B2 (en) | 2016-02-09 |
| CN103596934B (zh) | 2015-08-19 |
| CN103596934A (zh) | 2014-02-19 |
| EP2716634A4 (en) | 2014-10-29 |
| US20140094362A1 (en) | 2014-04-03 |
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