Heterocyclic Amide Kinase Inhibitors for Selective p38α Targeting

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Solution Overview

Problem

Current treatments for inflammatory diseases, such as those associated with p38 kinase activity, often have limitations in selectively inhibiting p38α and β kinases, particularly in achieving proportional inhibition of p38α over p38β, which can impact efficacy in managing conditions like inflammatory bowel disease and rheumatoid arthritis.

Innovation Solution

Development of heterocyclic amide compounds that act as selective inhibitors of p38 kinase, particularly targeting p38α with higher selectivity than p38β, formulated into pharmaceutical compositions for administration to treat inflammatory disorders.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If current treatments are used to inhibit p38 kinase activity, then inflammatory disease symptoms are reduced, but selectivity between p38α and p38β inhibition is insufficient

Engineering Contradiction:
Improveselectivity of p38α inhibitionVSAvoidbroad p38 kinase inhibition
Core Design Contradiction:
ReliabilityVSAdaptability or versatility

Solution Approach 1:

The patent applies local quality by designing heterocyclic amide compounds with specific molecular structures (Formula I) that exhibit differential binding affinity to p38α versus p38β kinase isoforms. The compounds contain specific heterocyclic rings (pyridine, pyrimidine, triazine) with particular substituent patterns that create localized interaction features preferentially recognized by p38α's active site, thereby achieving selective inhibition of p38α over p38β while maintaining overall p38 kinase inhibition capability

Inventive Principle:
Principle #3Local quality

2Reliability

If heterocyclic amide compounds are designed for high p38α selectivity, then therapeutic efficacy for specific inflammatory conditions is improved, but compound structure complexity increases

Engineering Contradiction:
Improvetherapeutic efficacyVSAvoidmolecular structure complexity
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The patent employs parameter changes by systematically varying key molecular parameters of the heterocyclic amide core structure, including: (1) the type of heterocyclic ring (pyridine vs. pyrimidine vs. triazine), (2) the nature of substituents at positions R1-R6, (3) the length and saturation of alkylene chains, and (4) the stereochemistry at chiral centers. These parameter variations allow fine-tuning of the compounds' selectivity profile and potency, enabling optimization of therapeutic efficacy while managing structural complexity through rational design rather than random screening

Inventive Principle:
Principle #35Parameter changes

Data Source

PatentUS8404689B2Heterocyclic amide compounds useful as kinase inhibitors
Publication Date: 2013.03.26 BRISTOL MYERS SQUIBB CO
  • US8404689B2 patent drawing
  • US8404689B2 patent drawing
  • US8404689B2 patent drawing

AI summary

A compound of Formula Iand enantiomers, diastereomers and pharmaceutically-acceptable salts thereof. Also disclosed are pharmaceutical compositions containing compounds of Formula I, and methods of treating conditions associated with the activity of p38 kinase.