Imidazopyridine Compounds Modulating P2X3 Receptors
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Solution Overview
Problem
There is a need for new P2X3 and/or P2X2/3 receptor ligands, particularly antagonists, that are safe and effective for treating various disorders related to P2X3 and/or P2X2/3, including pain and urinary tract disorders.
Innovation Solution
Development of imidazopyridine compounds, including specific structures represented by Formula I, which can be used as pharmaceutical compositions or medicaments to modulate P2X3 and P2X2/3 receptor activity, thereby treating conditions associated with excessive activity of these receptors.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If existing P2X3 receptor ligands are used to treat pain and urinary tract disorders, then therapeutic effectiveness is achieved, but safety and efficacy concerns remain due to lack of selective and potent antagonists
Solution Approach 1:
The patent applies parameter changes by systematically varying chemical structure parameters (substituents at positions R1-R9 in the imidazopyridine core) to optimize the balance between potency and selectivity. This allows tuning of pharmacological properties to achieve effective pain and urinary tract disorder treatment while minimizing adverse effects through improved receptor selectivity
Solution Approach 2:
The patent implements local quality by introducing specific substituent groups at defined positions on the imidazopyridine scaffold. Each substituent (e.g., fluorine atoms, methyl groups, heterocyclic moieties) provides localized functional properties that enhance binding affinity to P2X3 receptors while maintaining selective antagonism, thereby improving therapeutic index
2Reliability
If new P2X3 receptor ligands are developed to improve safety and efficacy, then therapeutic potential increases, but the complexity of compound structure and synthesis increases
Solution Approach 1:
The patent achieves universality by designing an imidazopyridine core structure (Formula I) that serves as a versatile scaffold for multiple therapeutic applications. The core structure can accommodate various substituents (R1-R9) to target P2X3 receptors for different indications including pain, overactive bladder, and other urinary tract disorders, reducing the need for separate development programs
Solution Approach 2:
The patent applies segmentation by dividing the molecular structure into distinct functional modules: the imidazopyridine core (providing basic P2X3 binding) and variable substituent groups (R1-R9) that fine-tune pharmacological properties. This modular approach simplifies structure-activity relationship analysis and facilitates systematic optimization of efficacy while managing structural complexity
Data Source
Figure 1~2
AI summary
This invention generally relates to substituted imidazopyridine compounds, particularly substituted 4-(imidazo[1,2-a]pyridin-2-yl)benzamide compounds and salts thereof. This invention also relates to pharmaceutical compositions and kits comprising such a compound, uses of such a compound (including, for example, treatment methods and medicament preparations), processes for making such a compound, and intermediates used in such processes.