Heterocyclic Compound for Arthropod Control via Structural Modification

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Solution Overview

Problem

Current compounds for controlling harmful arthropods have limitations in efficacy and specificity, necessitating the development of new compounds with improved control effects.

Innovation Solution

A compound represented by formula (I), where A is a CH or nitrogen atom, R1 is hydrogen or a specific group, and n is 0, 1, or 2, is used alone or in a composition with inert carriers or other active ingredients to control harmful arthropods, applied directly or to their habitats.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If existing compounds are used for controlling harmful arthropods, then basic control function is provided, but control efficacy is insufficient

Engineering Contradiction:
Improvecontrol efficacyVSAvoidspecificity
Core Design Contradiction:
ReliabilityVSAdaptability or versatility

Solution Approach 1:

The patent applies parameter changes by modifying the chemical structure of existing arthropod-controlling compounds. Specifically, it introduces a heterocyclic ring structure with specific substituents (formula I) to existing compound frameworks, thereby changing molecular parameters such as ring structure, substituent types, and molecular configuration to achieve enhanced control efficacy and improved specificity against harmful arthropods

Inventive Principle:
Principle #35Parameter changes

Solution Approach 2:

The patent employs composite materials by combining the heterocyclic compound structure of formula (I) with various inert carriers and adjuvants to create composite pesticidal compositions. These composite formulations integrate the active heterocyclic compound with carriers that enhance delivery, stability, and efficacy, thereby resolving the contradiction between basic control function and improved performance

Inventive Principle:
Principle #40Composite materials

2Reliability

If new compounds with improved efficacy are developed, then control effectiveness increases, but compound complexity increases

Engineering Contradiction:
Improvecontrol efficacyVSAvoidcompound structure complexity
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The patent applies segmentation by dividing the complex heterocyclic compound into identifiable structural components: the core heterocyclic ring (formula I), specific substituent groups (R1, R2, R3, A), and positional parameters (n). This segmentation allows systematic optimization of each component to achieve high efficacy while managing structural complexity through modular design principles

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The patent manages compound complexity through controlled parameter changes by systematically varying specific structural parameters (substituent types at R1, R2, R3; ring atom A; position n) while maintaining the core heterocyclic framework. This approach enables optimization of efficacy without indiscriminately increasing overall molecular complexity

Inventive Principle:
Principle #35Parameter changes

Data Source

PatentUS11555035B2Heterocyclic compound and harmful arthropod-controlling agent containing same
Publication Date: 2023.01.17 SUMITOMO CHEM CO LTD
  • US11555035B2 patent drawing
  • US11555035B2 patent drawing
  • US11555035B2 patent drawing

AI summary

The present invention provides a compound having an excellent control effect on a harmful arthropod. A compound represented by formula (I)[wherein:A represents a CH or a nitrogen atom;R1 represents a hydrogen atom or a NR2R3;R2 and R3 are identical to or different from each other, and each represent a C1-C6 alkyl group, a hydrogen atom, or the like; andn represents 0, 1, or 2]has an excellent control effect on a harmful arthropod.