Sulphonamide Scaffold Tuning for Selective MLKL Inhibition

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Solution Overview

Problem

The mechanisms of necrosis, particularly necroptosis, are not well understood, and existing compounds do not effectively target the mixed lineage kinase domain-like protein (MLKL) to inhibit this form of cell death, which contributes to various pathological conditions.

Innovation Solution

Development of sulphonamide compounds that selectively inhibit MLKL, offering a new approach to treat necroptosis by targeting this key effector protein.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If existing compounds are used to treat necroptosis, then necroptosis can be inhibited to some extent, but the compounds do not effectively target MLKL and lack selectivity

Engineering Contradiction:
Improvenecroptosis inhibition efficacyVSAvoidcompound selectivity for MLKL
Core Design Contradiction:
ReliabilityVSEase of manufacture

Solution Approach 1:

The patent modifies chemical parameters of the compounds by changing the core structure from other types to a sulphonamide core, and adjusting substituents at specific positions (R1, R2, R3, R4, R5, R6, R7, R8, R9, R10) to optimize MLKL binding affinity and selectivity while maintaining necroptosis inhibition efficacy

Inventive Principle:
Principle #35Parameter changes

Solution Approach 2:

The patent introduces specific local structural features including a sulphonamide group with particular substitution patterns at defined positions, creating localized chemical characteristics that enhance selective interaction with MLKL while preserving the overall necroptosis inhibition function

Inventive Principle:
Principle #3Local quality

2Ease of manufacture

If compounds are designed to target MLKL specifically, then selectivity is improved, but the scope of applicable necroptosis-related conditions remains limited

Engineering Contradiction:
Improvecompound selectivity for MLKLVSAvoidapplicability to various diseases
Core Design Contradiction:
Ease of manufactureVSAdaptability or versatility

Solution Approach 1:

The patent designs a universal sulphonamide core structure with variable substituents that can selectively target MLKL across different disease contexts, enabling the same compound framework to address multiple necroptosis-related conditions including neurodegenerative diseases, stroke, coronary heart disease, kidney disease, and AIDS through consistent MLKL inhibition mechanism

Inventive Principle:
Principle #6Universality (Multi-functionality)

Data Source

PatentEP4168401B1Sulphonamide compounds
Publication Date: 2026.01.07 ANAXIS PHARMA PTY LTD
  • EP4168401B1 patent drawing
  • EP4168401B1 patent drawing
  • EP4168401B1 patent drawing

AI summary

This invention relates to compounds of formula (I) and salts, solvates, tautomers, N-oxides, stereoisomers, polymorphs and/or prodrugs thereof. Also disclosed is the use of the compounds of formula (I) to treat necroptosis and/or inhibit MLKL.