Phenylpyrazole Insecticide Compounds for GABA-Targeted Pest Control
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
The widespread use of phenylpyrazole insecticides like fipronil has led to resistance in pests and environmental contamination, posing risks to non-target organisms and food safety, necessitating the development of more effective and safer alternatives.
Innovation Solution
Development of new V-phenyl-1H-pyrazolo[3,4-b]pyridine-3-carbonitriles compounds that act as insecticidal agents, targeting the GABA receptor in insects while minimizing toxicity to mammals and reducing the risk of metabolite accumulation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If phenylpyrazole insecticides like fipronil are used for pest control, then effective insecticidal activity is achieved, but resistance in pests develops and environmental contamination increases
Solution Approach 1:
The patent modifies the chemical structure of phenylpyrazole compounds by changing specific parameters: replacing the phenyl ring with heteroaryl groups (pyridine, pyrimidine, triazine), modifying substituents at positions R1-R6, and adjusting the nitrile group position. These parameter changes maintain GABA receptor binding affinity while reducing environmental persistence and toxicity to non-target organisms compared to fipronil
Solution Approach 2:
The invention creates composite molecular structures combining the phenylpyrazole core with heteroaryl moieties and various substituents. This composite approach generates new compounds (Formula I) that integrate the beneficial insecticidal properties of phenylpyrazoles with reduced harmful effects through strategic molecular composition changes
2Adaptability or versatility
If fipronil is used to control pests, then broad-spectrum insecticidal effect is achieved, but toxicity to non-target organisms including fish, aquatic invertebrates, and bees increases
Solution Approach 1:
The patent applies local quality changes by modifying specific regions of the molecule while preserving the core phenylpyrazole structure. Heteroaryl groups are introduced at specific positions (R1-R6), and substituents are strategically placed to maintain affinity for insect GABA receptors while reducing interaction with mammalian and aquatic organism receptors, thereby achieving selective toxicity
3Productivity
If phenylpyrazole insecticides are extensively used, then pest control effectiveness is maintained, but development of resistance in pests occurs
Solution Approach 1:
The patent employs parameter changes by systematically varying molecular structure parameters (heteroaryl type, substituent position and nature, ring saturation) to create compounds with novel binding characteristics. This diversity in molecular parameters helps overcome resistance mechanisms that have developed against fipronil and other phenylpyrazoles
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
These compounds provide effective pest control in crops, livestock, and companion animals without the risks associated with fipronil, maintaining safety for humans and the environment.
Implementation Method 1
Phenylpyrazole insecticides inhibit the GABA-gated chloride channel. Because chloride ion influx into neurons is an inhibitory action, disruption of GABA receptor opening results in a hyperexcited state in the neurons.
Data Source
AI summary
The present disclosure relates to new and improved insecticidal compounds of the phenylpyrazole class, according to the Formula I:wherein X, Y, Z, and Ar are as defined herein. In particular, the disclosure provides new insecticidal compounds for use against a variety of insects (arthropods), such as, for the treatment or prevention of disease or infestation on poultry and other livestock, horses, cats, dogs, and other companion animals, fields, crops, and other insecticidal uses. In particular embodiments, the present disclosure provides the use of said compounds for the treatment, control, suppression, or eradication, of an infection or infestation of an insect (arthropod), such as an adult insect, insect egg, insect larva, insect nymph, and/or insect pupa, including, but not limited to, the poultry mite, Dermanyssus gallinae.