CFTR Modulator Synthesis via Coupling Agent
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Solution Overview
Problem
Current treatments for cystic fibrosis, particularly those targeting the ΔF508 mutation in the CFTR gene, face challenges in effectively modulating CFTR activity due to defective protein folding and trafficking, leading to reduced anion transport and severe disease symptoms.
Innovation Solution
The development of compounds synthesized through specific coupling reactions using carboxylic acids and anilines in the presence of coupling agents like 2-chloro-1,3-dimethyl-2-imidazolium tetrafluoroborate, which modulate CFTR activity by forming compounds that can be used to treat cystic fibrosis and other related diseases.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If small molecule drugs (potentiators) are developed to increase CFTR channel opening probability, then CFTR activity is improved, but the defective protein folding and trafficking in ΔF508 mutation cannot be effectively addressed
Solution Approach 1:
The invention segments the CFTR modulation problem into two distinct components: (1) correctors that address protein folding and trafficking defects at the cellular level, and (2) potentiators that enhance channel opening probability at the membrane level. This segmentation allows simultaneous treatment of both the root cause (misfolding) and the symptomatic effect (reduced channel activity), resolving the contradiction between addressing folding defects and improving channel function.
Solution Approach 2:
The invention introduces corrector molecules as intermediary agents that mediate between the defective ΔF508-CFTR protein and the cellular quality control machinery. These correctors act as chaperones that facilitate proper protein folding and enable trafficking to the plasma membrane, thereby resolving the folding- trafficking defect that potentiators alone cannot address.
2Reliability
If compounds are synthesized to modulate CFTR activity, then anion transport is improved, but the complexity of synthesizing and optimizing these compounds increases
Solution Approach 1:
The invention identifies universal structural features and pharmacophores that can serve as cores for both corrector and potentiator molecules. By establishing a library of core structures with defined substituent patterns, the invention enables systematic optimization of multiple compound classes using common synthetic frameworks, thereby reducing the overall complexity of compound synthesis and development while maintaining effectiveness in improving anion transport.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
These compounds enhance CFTR activity, potentially improving ion and fluid transport in epithelial tissues, thereby alleviating symptoms of cystic fibrosis and related conditions by increasing the stability and functionality of CFTR channels.
Implementation Method 1
coupling a carboxylic acid of Formula 2 with an aniline of Formula 3 in the presence of a coupling agent selected from the group consisting of 2-chloro-1,3-dimethyl-2-imidazolium tetrafluoroborate, HBTU, HCTU, 2-chloro-4,6-dimethoxy-1,3,5-triazine, HATU, HOBT/EDC, and T3P
Data Source
AI summary
The invention provides a process for the preparation of a compound of Formula 1; comprising coupling a carboxylic acid of Formula 2; with an aniline of Formula 2; in the presence of a coupling agent.