CIC-1 Chloride Channel Inhibitor Synthesis via Parameter Optimization

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Solution Overview

Problem

Current methods for synthesizing CIC-1 chloride channel inhibitors are inefficient, requiring chromatographic steps and resulting in high impurity levels and low yields, which complicates the development of effective treatments for neuromuscular disorders.

Innovation Solution

A novel industrial process for preparing compounds of Formula I, involving the reaction of a compound of Formula II with an acid or base, which allows for better control of impurities, reduces the need for chromatographic steps, and increases yields, thereby improving the cost-effectiveness and efficiency of the synthesis.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If current synthesis methods are used, then CIC-1 chloride channel inhibitors can be produced, but the yields are low and impurity levels are high

Engineering Contradiction:
ImproveyieldVSAvoidpurity
Core Design Contradiction:
ProductivityVSManufacturing precision

Solution Approach 1:

The patent employs parameter changes by optimizing reaction conditions including temperature ranges (0°C to reflux), solvent selection (DCM, DMF, THF, MeCN), and stoichiometric ratios of reactants. These parameter adjustments enable high-yielding reactions with minimal impurity formation, eliminating the need for chromatographic purification while achieving >90% purity and >80% yield

Inventive Principle:
Principle #35Parameter changes

Solution Approach 2:

The patent applies preliminary action through careful pre-reaction planning including selecting appropriate starting materials with predetermined structures (Formula II compounds), pre-selecting optimal solvent systems, and establishing controlled addition sequences. This preliminary preparation ensures that the reaction proceeds directly to high-purity product without requiring subsequent chromatographic purification steps

Inventive Principle:
Principle #10Preliminary action

2Ease of manufacture

If current synthesis methods are used, then CIC-1 chloride channel inhibitors can be produced, but chromatographic steps are required which complicates the process

Engineering Contradiction:
Improveprocess simplicityVSAvoidsynthesis efficiency
Core Design Contradiction:
Ease of manufactureVSProductivity

Solution Approach 1:

The patent applies the extraction principle by completely eliminating chromatographic purification steps from the synthesis process. Through optimized reaction parameters and selective chemistry, the process achieves such high purity that no extraction or chromatography is needed, directly producing >90% pure product that requires only filtration and concentration

Inventive Principle:
Principle #2Taking out (Extraction)

Solution Approach 2:

The patent merges multiple process steps into a streamlined sequence where reaction, workup, and isolation are combined efficiently. The optimized protocol allows direct isolation of pure product from the reaction mixture without intermediate purification steps, reducing the number of operations from multiple chromatographic steps to a single efficient isolation procedure

Inventive Principle:
Principle #5Merging (Combining)

3Ease of manufacture

If current synthesis methods are used, then CIC-1 chloride channel inhibitors can be produced, but the cost-effectiveness is reduced due to low yields and high impurity levels

Engineering Contradiction:
Improvecost-effectivenessVSAvoidsynthesis efficiency
Core Design Contradiction:
Ease of manufactureVSProductivity

Solution Approach 1:

The patent achieves cost-effectiveness through parameter optimization that simultaneously improves yield and reduces purification costs. By adjusting temperature, solvent, and stoichiometry parameters, the process achieves >80% yield with >90% purity, eliminating expensive chromatographic equipment and solvent consumption while reducing waste disposal costs

Inventive Principle:
Principle #35Parameter changes

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

The process achieves higher purity and yield of CIC-1 chloride channel inhibitors, making them more effective in restoring neuromuscular transmission and treating muscle weakness and fatigue associated with neuromuscular junction disorders.

Implementation Method 1

a compound of Formula II is reacted with an acid or base

Methodology Applied
Scientific EffectChemical reaction: Chemical Bonding

Data Source

PatentUS12221425B2Process for the preparation of CIC-1 chloride channel inhibitors
Publication Date: 2025.02.11 NMD PHARMA AS
  • US12221425B2 patent drawing
  • US12221425B2 patent drawing
  • US12221425B2 patent drawing

AI summary

This disclosure relates to an improved chemical process for making compounds which are CIC-1 chloride channel inhibitors.