Imidazo[4,5-c]Pyridine Compounds for Selective TLR7/8 Activation

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Solution Overview

Problem

There is a need for new Toll-like receptor (TLR) agonists to treat diseases such as cancer and viral infections effectively.

Innovation Solution

Development of imidazo[4,5-c]pyridine derivatives that act as selective TLR7/8 modulators, providing therapeutic agents for immunomodulation, viral infection prevention or treatment, and cancer therapy.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If existing TLR agonists (such as imiquimod) are used, then antitumor activity and immune response are enhanced, but the need for new selective TLR7/8 modulators indicates limitations in current therapy effectiveness or specificity

Engineering Contradiction:
Improvetherapeutic effectivenessVSAvoidselectivity for TLR7/8
Core Design Contradiction:
ReliabilityVSAdaptability or versatility

Solution Approach 1:

The patent modifies the chemical structure of TLR agonists by changing molecular parameters (imidazo[4,5-c]pyridine core structure with specific substituents at positions R1-R12) to achieve selective activation of TLR7/8 receptors, thereby improving therapeutic effectiveness while enhancing selectivity compared to existing agonists like imiquimod

Inventive Principle:
Principle #35Parameter changes

2Power

If TLR8 activation is achieved, then cytokine production (IL-12, IL-18, TNF-α, IFN-γ) and immune responses are amplified, but potential off-target effects or toxicity may occur

Engineering Contradiction:
Improveimmune response amplificationVSAvoidoff-target effects
Core Design Contradiction:
PowerVSObject-affected harmful factors

Solution Approach 1:

The patent designs compounds with specific local structural features (imidazo[4,5-c]pyridine core with positioned substituents R1-R12) that enable selective binding to TLR7/8 receptors, ensuring that immune response amplification occurs locally at the target receptor without causing widespread off-target effects or toxicity

Inventive Principle:
Principle #3Local quality

Data Source

PatentUS20250313557A1Imidazo[4,5-c]pyridine derivative compounds as TLR7/8 modulators
Publication Date: 2025.10.09 LIGACHEM BIOSCIENCES INC
  • US20250313557A1 patent drawing
  • US20250313557A1 patent drawing
  • US20250313557A1 patent drawing

AI summary

Disclosed herein are immune response modulators that act on toll-like receptors and methods of use thereof.