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56results about How to "Good poisonous activity" patented technology
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Compound bactericide capable of preventing and treating rice blast
The invention discloses a compound bactericide capable of preventing and treating rice blast. The compound bactericide is prepared from base materials albendazole and tricyclazole in the mass ratio of 1: (15-35); the albendazole is a bactericide technical material in the mass fraction of 97%, while the tricyclazole is a bactericide technical material in the mass fraction of 95%. Preferably, the mass ratio of the albendazole and tricyclazole is 1: 35. According to the compound bactericide, the two base materials are not chemically reacted, have an obvious synergic or addition effect, and are safe to use; besides, the compound bactericide has excellent poisonous activity on the rice blast bacteria different in types in the field at present, and is obviously higher than the single dose of the albendazole or the tricyclazole in the poisonous activity. The compound bactericide is suitable for vast rural areas to prevent and treat the rice blast.
Owner:DAOYUAN SCI & TECH CO GUIZHOU PROV
Peony bark nematicidal extract and preparation method thereof
The invention discloses a peony bark nematicidal extract and a preparation method thereof. The invention provides the preparation method of the peony bark ethyl acetate extract, which comprises the following steps of: (1) uniformly mixing the peony barks and ethyl acetate to obtain a mixture; and (2) ultrasonically treating the obtained mixture and filtering and concentrating the mixture to obtain the peony bark ethyl acetate extract. It is proved by an experiment provided by the invention that the peony barks are extracted by using the ethyl acetate and the poisoning effect of an extracting solution on root-knot nematode is tested; as a result, the extract shows strong poisoning activity to the root-knot nematode; and it is shown that the extract provided by the invention lays basis for the development and application of root-knot nematode biocontrol preparations in the future. According to the invention, nematicidal active substances are extracted by using natural and harmless plantmaterials so that the pollution caused by chemical pesticides can be reduced; and the simple extracting method is easy to promote and apply in controlling plant root-knot nematodes.
Owner:BEIJING UNIV OF AGRI
Preparation method for spider neurotoxin TX4(6-1) recombinant protein
InactiveCN106754943AAvoid degradationLow toxicityFungiMicroorganism based processesPichia pastorisBiotechnology
The invention discloses a preparation method for a spider neurotoxin TX4(6-1) recombinant protein. The preparation method comprises the following steps: (1) according to the amino acid sequence of TX4(6-1) mature toxin and the feature of a pichia pastoris expression system, optimizing and synthesizing gene of TX4(61-) of which the C-end is provided with a 6XHis label and constructing a pichia pastoris secretory expression carrier; (2) converting a recombinant carrier to a pichia pastoris host, screening to obtain a yeast converter of high-level secretory expression; and (3) expressing a recombinant spider insect neurotoxin TX4(6-1) protein in the yeast host, to obtain the recombinant spider insect neurotoxin TX4(6-1) protein of which the purity is more than 95% rapidly through a nickel affinity chromatography method, wherein the protein has the remarkable toxicity to silkworms. According to the preparation method, a large number of the stable recombinant spider insect neurotoxin TX4(6-1) proteins can be rapidly obtained. The preparation method has important value for the insect resistant field, specifically for cultivating insect resistant plant varieties, and the preparation method has important significance for improving the yield of crops.
Owner:HUAIHUA UNIV
Pesticide for killing agricultural pests as well as preparation method and application of pesticide
The invention relates to a novel camptothecin micelle, a pesticide obtained by combining the camptothecin micelle with another pesticide, and preparation methods, and further relates to a specific compound, a preparation method of the specific compound, and application of the specific compound in pesticides. The preparation method of the camptothecin micelle comprises the following steps: dissolving mPEG2000-COOH in dry methylene chloride, and then sequentially adding camptothecin, 4-dimethylamino pyridine and N,N-diisopropylcarbodiimide for a reaction; after the reaction is finished, carrying out organic phase drying treatment, filtration, distillation and spin drying to obtain a crude product; carrying out purification, adding the purified product into DMSO, and carrying out dialysis to obtain the camptothecin nano-micelle. Compared with camptothecin, the acetamiprid-coated CPT-mPEG2000 micelle formed by coating acetamiprid is higher in water solubility and toxic activity.
Owner:LANZHOU UNIVERSITY
Application of flavonoid compound theaflavanoside IV to prevention and treatment of plant nematode diseases
The invention relates to application of flavonoid compound theaflavanoside IV to prevention and treatment of plant nematode diseases. The structure of the flavonoid compound theaflavanoside IV is shown as the formula (1). The flavonoid compound theaflavanoside II has strong poisonous activity on globodera pallida, root-knot nematode, pratylenchus pratensis and aphelenchoides besseyi, and particularly has very strong toxicity on the root-knot nematode. The flavonoid compound theaflavanoside IV is extracted from natural plants and is easy to degrade in the environment; compared with a chemical nematicide, the flavonoid compound theaflavanoside IV has the properties of low toxin and low residues, and has relatively good compatibility with the environment; and the requirements on green plant protection, and sustainable agricultural production and development are met. The formula (1) is shown in the description.
Owner:SOUTH CHINA AGRI UNIV +1
Application of Anoxetine A in the Preparation of Pesticide Preparations
InactiveCN104642313BGood poisonous activityReduce pollutionBiocideAnimal repellantsAbamectinAphis craccivora
The invention discloses an annona squamosa lactone compound annosquatin A prepared from an annona squamosa seed and capable of preventing and controlling agricultural pests. A large number of biological activity assay results show that the annona squamosa lactone compound annosquatin A has poisonous activities in different degrees to the aphis craccivora and cinnabar tetranychid, especially has better poisonous activity to the aphis craccivora than abamectin, and the annosquatin A is extracted from the annona squamosa, the pollution to the environment is small, the annosquatin A is green and environment-friendly, and can be used for developing a new pesticide preparation for preventing and controlling agricultural pests.
Owner:NANJING UNIVERSITY OF TRADITIONAL CHINESE MEDICINE
Camptothecin compound, and preparation method and application thereof
ActiveCN104725390AGood poisonous activityThe synthesis process is simpleBiocideOrganic chemistryPesticidePhenyl group
The invention discloses a camptothecin compound as shown in a formula (I) which is described in the specificaiton, a preparation method for the compound and application of the compound in preparation of pesticide. In the formula (I), R is 4-fluorophenyl, 4-chlorophenyl, 4-bromophenyl, 3-chlorophenyl, 2-chlorophenyl, 4-methoxyphenyl, 4-methylphenyl, 2-methoxyphenyl, 1-naphthyl, benzyl or 2-pyridyl.
Owner:甘肃康扬医药科技有限公司
Camptothecin-avermectin silica nanoparticle, and preparation method and application thereof
InactiveCN105340919AImprove protectionGood poisonous activityBiocideAnimal repellantsAvermectinSilicon dioxide
The invention discloses a novel camptothecin-avermectin silica nanoparticle clathrate medicine and a preparation method thereof, and application of the medicine in preparation of pesticide. The preparation method for the camptothecin-avermectin silica nanoparticle comprises the following steps: preparing mPEG500-COOH(2); then preparing a crude product; and dissolving 350 mg of avermectin, mPEG500-COOH and 4-dimethylaminopyridine (DMAP) with dichloromethane, carrying out stirring and then adding dicyclohexylcarbodiimide (DCC) so as to eventually obtain a light yellow oily matter, i.e., the camptothecin-avermectin silica nanoparticle AVM-mPEG500. The camptothecin-avermectin silica nanoparticle prepared by using the method can be applied to pesticide for, e.g., killing crop insects like Tetranychus cinnabarinus or diamondback moth.
Owner:LANZHOU JIAOTONG UNIV
Insect kinin analogues and application thereof in pest control
ActiveCN108276473AGood poisonous activityHigh insecticidal activityBiocidePeptide preparation methodsSide chainKinin
The invention discloses insect kinin analogues and application thereof in pest control. The structural formula of the insect kinin analogues is shown as a formula I, wherein the formula I, Raa is H oris from natural amino acid or unnatural amino acid. The insect kinin analogues are characterized in that a strategy and method of peptidomimetics are adopted; a turning point Phe2 of an active conformation VI type beta bend of an active kinin analogue is subjected to substituted modification, i.e., substitution is performed on Phe2 side chain aromatic ring; meanwhile, piperidine ring, saturated six-membered ring, hydrophobic group and hydrophilic group similar to a benzene ring structure are introduced to carry out substituted modification, and thus novel insect kinin analogues with novel structures are invented. The novel compound has obvious insecticidal activity, particularly has a good control effect on aphid and can be applied to control over agricultural pests such as the aphid. (The formula I is shown in the description).
Owner:CHINA AGRI UNIV
Preparation method of crotonane diterpenoid compound and application of crotonane diterpenoid compound in preparation of nematode killing insecticides
InactiveCN112715542AReduce in quantityIncrease the number ofBiocideOrganic chemistryBiotechnologyNematode
The invention relates to a preparation method of a crotonane diterpenoid compound and application of the crotonane diterpenoid compound in preparation of nematode killing insecticides, and belongs to the technical field of agriculture. . The crotonane diterpenoid compound is characterized by the following chemical structural formula. According to the invention, the root, stem and leaf parts of euphorbia euphorbia of euphorbia family plant can play a poisoning role on various plant parasitic nematodes in various forms, and the new crotonane diterpenoid compound is separated from the plant. Activity screening proves that the compound has particularly outstanding poisoning activity on plant parasitic nematodes, can be used for preparing nematocides, reduces the number of the plant parasitic nematodes in agricultural production, reduces the harm of the parasitic nematodes and increases the yield of crops.
Owner:SHENYANG AGRI UNIV
A kind of star anise nematocidal extract and preparation method thereof
The invention discloses a star anise extract for killing Meloidogyne spp. and a preparation method thereof, and provides a method for preparing a star anise absolute ethanol extract. The method comprises the following steps of: 1) uniformly mixing star anise and absolute ethanol to obtain a mixture; and 2) performing ultrasonic treatment on the mixture obtained in step 1), and suction-filtering and concentrating to obtain the star anise absolute ethanol extract. Through the experiment, star anise is extracted by using absolute ethanol, the poisoning effect of extracting solution on the Meloidogyne spp. is tested, and the result is that the extract has strong poisoning activity on the Meloidogyne spp.; therefore, the extract lays a foundation for the development and application of Meloidogyne spp. biocontrol preparations in the future. In the method, an active substance for killing the Meloidogyne spp. is extracted by using a natural harmless plant material, so that the pollution caused by chemical pesticides can be reduced; and the extraction method is simple, and can be easily popularized and applied to the control of plant rootknot nematodes.
Owner:BEIJING UNIV OF AGRI
Fungicide formed by compounding prothioconazole and miconazole and used for preventing and treating rice blast
InactiveCN107333792AGood poisonous activitySynergistic effect is obviousBiocideFungicidesRural areaFungicide
Fungicide formed by compounding prothioconazole and miconazole and used for preventing and treating rice blast is characterized by being prepared by compounding the prothioconazole and the miconazole which serve as base material according to the mass ratio of the miconazole to the prothioconazole being from 1:1 to 1:7; and the prothioconazole is an original medicine with the mass percentage being 98 percent, and the miconazole is an original medicine with the mass percentage being 98 percent. Preferably, the fungicide for preventing and treating rice blast is compound fungicide prepared by compounding the prothioconazole and the miconazole according to the mass ratio of the miconazole to the prothioconazole being 1:3. According to the fungicide, after the two base materials are mixed, the two base materials do not generate chemical reaction, so the fungicide has remarkable synergistic effect, is safe to use, has high toxic activity which is obviously higher than that of miconazole and prothioconazole single agents, and is suitable for the vast rural areas to prevent and treat rice blast.
Owner:GUIZHOU DAOYUAN BIOTECH
N-(2-Thienyl)methylene-2-cyano-3-heterocyclic acrylhydrazine derivative and application thereof
ActiveCN107098894AImprove antioxidant capacityNovel structureBiocideOrganic chemistryAntioxidantAgricultural pesticides
The invention relates to heterocyclic Schiff base compounds and their application, in particular to N-(2-thienyl)methylene-2-cyano-3-heterocyclic acrylhydrazine derivative and application thereof. The technical problem to be solved herein is to provide a heterocyclic Schiff base compound capable of serving as an antioxidant and agricultural pesticide, and the structural formula of the compound is shown as in formula I that is shown in the description. A heterocyclic compound is introduced to Schiff base compounds according to the splicing principle of bioactive groups, active compounds or active pilot compounds having novel structure and good activity are discovered, and good basis is laid for the creation of novel antioxidants and pesticides.
Owner:启东市环球齿轮有限公司
Clove extract for killing nematode and preparation method thereof
The invention discloses a clove extract for killing nematode and a preparation method thereof. The invention provides a method for preparing a clove absolute ethyl alcohol extract, and the method comprises the following steps: 1) evenly mixing clove with absolute ethyl alcohol to obtain a mixture; 2) carrying out ultrasonic treatment on the mixture obtained in step 1) and then carrying out pumping filtration and condensation to obtain the clove absolute ethyl alcohol extract. According to experiments in the invention, absolute ethyl alcohol is used to extract clove, tests of toxic effects of the extract on Meloidogyne spp. are carried out, and the test results show that the extract has strong toxic activity on Meloidogyne spp.; therefore, it is indicated that the extract provided in the invention provides a development and application basis for preparations for controlling Meloidogyne spp. in the future. In the invention, active components capable of killing nematode are extracted from the plant clove which is natural and harmless, which allows reduced usage of chemical pesticides, thereby reducing pollution to agricultural products and environment.
Owner:BEIJING UNIV OF AGRI
Application of flavonoid compound theaflavanoside II to prevention and treatment of plant nematode diseases
The invention relates to application of flavonoid compound theaflavanoside II to prevention and treatment of plant nematode diseases. The structure of the flavonoid compound theaflavanoside II is shown as the formula (1). The flavonoid compound theaflavanoside II represented by a compound (1) has strong poisonous activity on plant nematodes, has very strong inhibition activity on the incubation of south root-knot nematode ova, and has very strong poisonous activity on second-stage juveniles of south root-knot nematodes, all-age-period nematodes of pratylenchuspratensi, and all-age-period nematodes of aphelenchoides besseyi. The flavonoid compound theaflavanoside II is extracted from natural plants and is easy to degrade in the environment; compared with a chemical nematicide, the flavonoid compound theaflavanoside II has the properties of low toxin and low residues, and has relatively good compatibility with the environment; and the requirements on green plant protection, sustainable agricultural production and development are met. The formula (1) is shown in the description.
Owner:SOUTH CHINA AGRI UNIV
Application of benzoic acid in prevention and treatment of plant nematode diseases
ActiveCN113349203AGood poisonous activityEnhance killing activityBiocideNematocidesBiotechnologyBenzoic acid
The invention relates to the technical field of prevention and treatment of plant diseases, in particular to application of benzoic acid in prevention and treatment of plant nematode diseases, wherein the benzoic acid is used as an effective component in nematicide. Based on the research result of the invention, the benzoic acid has strong toxic activity on various nematodes such as Meloidogyne, Heterodera, Bursaphelenchusxylophilus and the like, can be used for effectively preventing and treating plant nematode diseases, has the advantages of low harm to a human body, low toxicity, low residue, easiness in degradation, greenness, environmental protection and the like, and has good application values are realized in the aspects of preventing and controlling the plant nematodes and developing related medicament products.
Owner:SOUTH CHINA AGRI UNIV +1
Phenylpyrazole zwitterionic compound and application thereof in control of resistant pests
ActiveCN107382969AOvercome resistanceDelayed resistanceBiocideOrganic chemistryChemistryNicotinic acetylcholine receptor
The invention discloses a phenylpyrazole zwitterionic compound and application thereof in control of resistant pests. The phenylpyrazole zwitterionic compound belongs to a dipolar compound containing positive and negative charges in a delocalization state in the structure, and a molecule contains a pharmacophore phenylpyrazole group of a gamma-aminobutyric acid receptor and a zwitterionic group of a nicotinic acetylcholine receptor that are used for acting on a nerve parts of an insect, so that compared with a single phenylpyrazole insecticide acting on the gamma-aminobutyric acid receptor of the insect, the phenylpyrazole zwitterionic compound are used for simultaneously acting on two different target spots of the nerve part of the insect, synergistic interaction can be achieved, the purpose of overcoming resistance is achieved, and the high efficiency of the phenylpyrazole zwitterionic compound for resistant pests is showed; and in addition, a control spectrum can be added, and therefore, the application prospect is very wide.
Owner:SOUTH CHINA AGRI UNIV
Nematicidal extract of radix-polygoni multiflori and preparation method thereof
The invention discloses a nematicidal extract of radix-polygoni multiflori and a preparation method thereof, and provides a method for preparing ethyl acetate extract of radix-polygoni multiflori. The method comprises the following steps: 1) uniformly mixing radix-polygoni multiflori with ethyl acetate to obtain a mixture; and 2) ultrasonically treating the mixture obtained in the step 1), carrying out suction filtration and concentrating to obtain the ethyl acetate extract of radix-polygoni multiflori. The experiments prove that radix-polygoni multiflori is extracted by using ethyl acetate, the poisoning and killing effect of the extract on root-knot nematode is tested, and the test result shows that the extract has strong poisoning and killing activity on root-knot nematode; and the extract disclosed by the invention lays a foundation for the subsequent development and application of root-knot nematode biological prevention and control agents. The method has the advantages that nematicidal active substance is extracted by utilizing natural harmless plant materials, pollution caused by chemical pesticides is reduced, and the extraction method is simple and can be easily popularized and applied to the prevention and control of plant root-knot nematode disease.
Owner:BEIJING UNIV OF AGRI
Agricultural insecticidal composition for preventing and controlling Pyrausta nubilalis
InactiveCN110679612AHas broad-spectrum insecticidal activityUse low concentrationBiocideAnimal repellantsBenzoic acidBacillus thuringiensis
The invention provides an agricultural insecticidal composition for preventing and controlling Pyrausta nubilalis, and relates to the technical field of pesticides, wherein the agricultural insecticidal composition contains a component A, a component B, an agriculturally acceptable carrier and an auxiliary agent, the component A comprises chlorfluazuron, emamectin benzoate, oxymatrine and chelerythrine hydrochloride, and the component B comprises beauveria bassiana and bacillus thuringiensis. According to the invention, the agricultural insecticidal composition has excellent preventing and treating effects on Pyrausta nubilalis in corn straws; the raw materials are scientifically blended, so that the advantage complementation effect is achieved, the insecticidal efficiency is improved, thehalf lethal time of pests is obviously shortened, the high synergistic effect can be generated among the raw materials, the drug resistance of pests is overcome and delayed, the prevention and control spectrum is expanded, and the drug cost is reduced; and the insecticidal composition is used for preventing and controlling Pyrausta nubilalis, can be used for preventing and controlling pests of other crops, and has advantages of good fast-acting property, stable prevention and control effect, environmental friendliness and the like.
Owner:宁波市鄞州赛弗兑食品科技有限公司
13-aminoxanthatin derivatives and preparation method and application thereof
The invention provides 13-aminoxanthatin derivatives. A chemical formula of the derivatives is as shown in the specification. A preparation method comprises the following steps: carrying out a Michaeladdition reaction outside the ring of xanthatin and secondary amines to prepare the derivatives. A series of new 13-aminoxanthatin derivatives are synthesized, the derivatives have relatively strongtoxic activity against plutella xylostella, and have a certain inhibition effect against spore germination of alternaria solani, fusarium solani, botrytis cinerea and colletotrichum orbiculare. Therefore the derivatives can be used to prepare efficient and low-toxic plant-derived insecticides and bacteriostatic agents.
Owner:SHANXI AGRI UNIV
Compound bactericidal composition for preventing and treating lawn fusarium wilt
The invention discloses a compound bactericidal composition for preventing and treating lawn fusarium wilt. The compound bactericidal composition is a water suspension agent and comprises an active ingredient and an aid, wherein the active ingredient is obtained by compounding of albendazole and trichlamide serving as base materials; the aid comprises a wetting dispersant, a thickening agent, an anti-freeze agent and a de-foaming agent; the mass percentages of all the components are shown as follows: 5-50 percent of the active ingredient, 2-6 percent of the wetting dispersant, 0.1-0.4 percentof the thickening agent, 3-5 percent of the anti-freeze agent, 0.4-0.6 percent of the de-foaming agent, and the balance of water to 100 percent. The mass ratio of the albendazole to the trichlamide inthe active ingredient is 1-4 to 4-1. The compound bactericidal composition for preventing and treating the lawn fusarium wilt is obviously increased in effect after the two base materials are compounded, is safe to use, has good toxic activity to fusarium causing lawn withering, is obviously higher than a propylthiazole and salicylamine single agent and is suitable for preventing and treating thelawn fusarium in urban and rural areas.
Owner:GUIZHOU DAOYUAN BIOTECH
Alpinia kwangsiensis compound, as well as preparation method and application thereof
InactiveCN103193745AGood poisonous activityEasy to prepareBiocideOrganic chemistryAlpinia kwangsiensisStructural formula
The invention discloses an alpinia kwangsiensis compound, as well as a preparation method and application thereof. The invention provides a chemical structural formula of the compound separated from alpinia kwangsiensis, and the compound is prepared from the root part of the alpinia kwangsiensis, has nematicidal activity and can be widely applied to preparing nematicidal agents. The preparation method disclosed by the invention has the advantages of simplicity, low preparation cost and broad application prospects.
Owner:YUNNAN AGRICULTURAL UNIVERSITY
Oxazolyl steroid derivative as well as synthesis method and application thereof
The present invention provides an oxazolyl steroid derivative having a chemical structure represented by general formula (1) shown in the specification, wherein a substituent R represents one of an alkyl group, a phenyl group or a substituted phenyl group. The invention further provides a synthesis method of the oxazolyl steroid derivative. Biological assay proves that the oxazolyl steroid derivative has good poisoning activity on piercing-sucking insects such as eriosoma lanigerum, myzus persicae, yellow aphid and whiteflies, and can be used for preventing and controlling plant insect pests.
Owner:NORTHWEST A & F UNIV
Application of flavonoid theaflavanoside III in preventing plant nematode diseases
ActiveCN104920363AEasy to degradeComply with green plant protectioBiocideNematocidesSting plantPratylenchus coffeae
The invention relates to an application of flavonoid theaflavanoside III in preventing plant nematode diseases. The structure of the flavonoid theaflavanoside III is shown as the formula (I). The flavonoid theaflavanoside III has high poisonous activity for heterodera, root-knot nematode, pratylenchus coffeae and aphelenchoides besseyi and especially has high toxicity for heterodera. Field experiment of camellia seed cake powder containing the flavonoid theaflavanoside III shows that the preventive effect for the soybean heterodera disease is equivalent to that of conventional chemical nematicide lythidathion. (See specifications).
Owner:SOUTH CHINA AGRI UNIV +1
Compound sterilization composition for preventing and treating apple anthracnose
The invention discloses a compound sterilization composition for preventing and treating apple anthracnose. The compound sterilization composition is a water suspending agent and contains an active component and assistants, wherein the active component is obtained by compounding of prothioconazole and picoxystrobin as base stocks, and the assistants include a wetting dispersant, a thickener, an antifreezing agent and a defoaming agent, and the mass proportion of the components are as follows: 5-50% of the active component, 2-6% of the wetting dispersant, 0.1-0.4% of the thickener, 3-5% of theantifreezing agent and 0.4-0.6% of the defoaming agent, and water is added till reaching 100%. In the active component, the mass ratio between prothioconazole and picoxystrobin is 1:4-4:1. The compound sterilization composition for preventing and treating apple anthracnose is obviously increased in effect after the two base stocks are compounded, is safe in use, and has good poisonous activity ongerms of apple anthracnose, which is higher than that of single dosages of prothioconazole and picoxystrobin. The compound sterilization composition is applicable to prevention and treatment of appleanthracnose in the rural area.
Owner:GUIZHOU DAOYUAN BIOTECH
N-(substituted phenyl) pyrazolo arketone derivatives, preparation method and application thereof
InactiveCN106749288BEnhanced inhibitory effectHigh activityBiocideOrganic chemistryBenzenePositive control
Owner:ZHENGZHOU UNIV
Benzophenone hydrazone sulfonylurea compound and its preparation method and use
InactiveCN104725288AGood poisonous activityNovel structureBiocideSulfonic acid amide preparationHydrazoneBenzophenone
The invention relates to a novel benzophenone hydrazone sulfonylurea compound and its preparation method and use in preparation of insecticides and acaricides.
Owner:LANZHOU UNIVERSITY
A kind of medicine for killing agricultural pests and its preparation method and application
Owner:LANZHOU UNIVERSITY
Novel insect kinin analogue and application thereof in aphid prevention and control
PendingCN113788877AGood poisonous activityHigh activityBiocidePeptide preparation methodsSide chainChemical compound
The invention provides a novel insect kinin analogue and application thereof in aphid prevention and control. The structural formula is shown as a formula A. According to the invention, a strategy and a method of mimic peptidology are adopted. The novel insect kinin analogue is invented by adopting a strategy and a method of mimetic peptidology, a turning point Phe2 of an active conformation VI type [beta] corner of the active kinin analogue is subjected to substitution modification, i.e., side chain aromatic ring substitution at a key site Phe2 is carried out, and meanwhile, ester groups, ether bonds, aliphatic rings, aliphatic chains and the like are introduced for substitution modification, and the compound as shown in the formula A is prepared by adopting a solid-phase polypeptide method. The novel compound has very obvious aphid killing activity which is superior to that of a control commercial medicament pymetrozine, particularly has a very good control effect on various aphids, and can be applied to prevention and control of agricultural aphids.
Owner:CHINA AGRI UNIV
Application of flavonoid compound theaflavanoside II in the control of plant nematode diseases
ActiveCN104823979BGood poisonous activityStrong inhibitory activityBiocideNematocidesPlant nematodeDisease
The invention relates to application of flavonoid compound theaflavanoside II to prevention and treatment of plant nematode diseases. The structure of the flavonoid compound theaflavanoside II is shown as the formula (1). The flavonoid compound theaflavanoside II represented by a compound (1) has strong poisonous activity on plant nematodes, has very strong inhibition activity on the incubation of south root-knot nematode ova, and has very strong poisonous activity on second-stage juveniles of south root-knot nematodes, all-age-period nematodes of pratylenchuspratensi, and all-age-period nematodes of aphelenchoides besseyi. The flavonoid compound theaflavanoside II is extracted from natural plants and is easy to degrade in the environment; compared with a chemical nematicide, the flavonoid compound theaflavanoside II has the properties of low toxin and low residues, and has relatively good compatibility with the environment; and the requirements on green plant protection, sustainable agricultural production and development are met. The formula (1) is shown in the description.
Owner:SOUTH CHINA AGRI UNIV
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