Aryl Amidines Broad-Spectrum Fungicidal Activity
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Solution Overview
Problem
Current fungicides are not universally effective against various fungal pathogens affecting plants, and there is a need for compounds that are easier to use and cost-effective.
Innovation Solution
Development of aryl amidine compounds, specifically those of Formula I, which can be used as fungicides to protect plants against ascomycetes, basidiomycetes, deuteromycetes, and oomycetes, applied in formulations such as solutions, dusts, or granules, utilizing a phytologically acceptable carrier to ensure efficacy and safety.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If current fungicides are used, then some fungal pathogens are controlled, but they are not universally effective against various fungal pathogens
Solution Approach 1:
The patent develops aryl amidine compounds with a core chemical structure (Formula I) that provides broad-spectrum fungicidal activity against multiple fungal groups including ascomycetes, basidiomycetes, deuteromycetes, and oomycetes. The universal amidine scaffold serves multiple functions by targeting different fungal pathogens through a single compound design, resolving the contradiction between specialization and broad effectiveness.
Solution Approach 2:
The patent systematically varies substituent parameters (R1-R10 groups) on the amidine core structure to optimize activity against different fungal pathogens. By changing chemical parameters such as alkyl groups, haloalkyl groups, alkoxy groups, and heterocyclic substituents at different positions, the compound's fungicidal spectrum and effectiveness are enhanced across multiple fungal types simultaneously.
2Adaptability or versatility
If new fungicidal compounds are developed, then broader protection is achieved, but development cost and complexity increase
Solution Approach 1:
The fungicidal compound is segmented into a core amidine structure (Formula I) with distinct substitutable positions (R1-R10). This segmentation allows independent optimization of different molecular regions: the core provides the essential fungicidal activity, while peripheral substituents fine-tune specificity and potency against different fungal groups, simplifying the design process for broad-spectrum compounds.
Solution Approach 2:
The patent employs systematic parameter variation of substituent groups (alkyl, haloalkyl, alkoxy, heterocyclic, aryl groups) at defined positions on the amidine core. This structured approach to parameter changes enables methodical optimization of fungicidal properties without requiring completely new molecular scaffolds, thereby controlling development complexity while achieving broad-spectrum activity.
Data Source
AI summary
This disclosure relates to aryl amidines of Formula I and their use as fungicides.