Bicyclic Compound Structures for Broad-Spectrum Pest Control
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Solution Overview
Problem
Existing pest control agents exhibit narrow spectrum of pesticidal activity, lack satisfactory efficacy at lower application rates, do not provide quick action or long-lasting activity, and pose risks of resistance development, with unsatisfactory environmental safety and plant compatibility.
Innovation Solution
Development of novel bicyclic compounds with specific structural features, which can be used alone or in combination with other biologically active compounds, enhancing efficacy against difficult-to-control pests and improving environmental safety and plant compatibility.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If existing substituted bicyclic compounds are used, then pest control activity is achieved, but the spectrum of pesticidal activity is narrow
Solution Approach 1:
The patent applies universality by designing bicyclic compounds with a core structure that can target multiple pest types through systematic variation of substituents at different positions (R1-R8). The common bicyclic backbone provides a universal framework that, when combined with diverse substituent groups (alkyl, haloalkyl, cycloalkyl, heterocyclic, etc.), enables the same compound class to achieve broad-spectrum pesticidal activity against insects, mites, and other arthropods while maintaining reliable pest control efficacy.
2Reliability
If existing compounds are applied at higher rates, then pest control efficacy is improved, but the cost and environmental impact increase
Solution Approach 1:
The patent applies parameter changes by optimizing the molecular structure of bicyclic compounds through systematic variation of substituent parameters (types, positions, and combinations of R1-R8 groups). This structural optimization enhances the intrinsic potency and affinity of the compounds for their target pests, enabling effective pest control at lower application rates. The changes in chemical parameters (substituent types and arrangements) directly improve efficacy while reducing the quantity of substance needed.
3Speed
If existing compounds are used, then quick action is achieved, but long-lasting activity is not provided
Solution Approach 1:
The patent applies composite materials by creating bicyclic compounds that integrate multiple functional groups and structural features within a single molecular framework. The compounds combine elements that provide rapid pest control action with structural features that ensure prolonged duration of activity. This composite approach at the molecular level allows the same compound to deliver both quick knockdown and sustained protective effect, resolving the contradiction between speed and duration.
4Reliability
If existing compounds are used, then pest control activity is achieved, but resistance development risk increases
Solution Approach 1:
The patent applies segmentation by dividing the pest control function into multiple molecular components within the bicyclic structure. Different substituent groups (R1-R8) can be independently varied and combined to create diverse molecular variants that target different pest receptors or pathways. This segmentation of the molecular structure allows for the development of a library of compounds with different mechanisms of action, reducing the risk of resistance development while maintaining reliable pest control activity.
Data Source
AI summary
Novel bicyclic compounds have formula (I),In Formula (I), the definition of A1, A2, A3, A4, A5, Z, D, R3, R8 and R8a is described in the detailed description. which are demonstrating high pesticidal efficacy. Also described are methods of preparation of compounds of formula (I). The disclosure further relates to compositions, combinations, uses and methods of application of the compounds of formula (I).