Cangrelor Tetrasodium Salt Synthesis via C18 Chromatography
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Solution Overview
Problem
Current methods for preparing Cangrelor tetrasodium salt are complex, time-consuming, and result in low yields with high impurity content, making them unsuitable for large-scale production and not meeting the quality requirements of API (Active Pharmaceutical Ingredient).
Innovation Solution
A simplified two-step method involving the reaction of compound C with phosphorus oxychloride, followed by clodronic acid and sodium bicarbonate, with subsequent purification using C18 silica gel column chromatography to achieve high purity Cangrelor tetrasodium salt, reducing the number of purification steps and organic solvent usage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the conventional multi-step purification method is used, then the product can be obtained, but the process becomes complex and time-consuming with low yield
Solution Approach 1:
The patent combines multiple purification steps into a single column chromatography separation process. The reaction mixture is directly loaded onto the column without requiring intermediate precipitation, filtration, or multiple extractions, thereby simplifying the process while maintaining high yield
Solution Approach 2:
The patent extracts and removes impurities directly from the reaction mixture through column chromatography in a single operation, eliminating the need for multiple sequential purification steps and reducing overall process complexity
2Manufacturing precision
If the conventional method with multiple purification steps is used, then some purification is achieved, but the process is time-consuming and labor-consuming
Solution Approach 1:
The patent performs purification actions during the reaction process itself by directly loading the reaction mixture onto the column chromatography system, eliminating the need for separate preliminary purification steps and reducing total processing time
Solution Approach 2:
The patent merges multiple purification operations (filtration, extraction, chromatography) into a single integrated column chromatography process, significantly reducing the time required while achieving the required purity level
3Productivity
If the conventional method is used, then the product can be prepared, but a large amount of waste is produced
Solution Approach 1:
The patent recovers and reuses the mobile phase solvent in the column chromatography process, minimizing waste generation. The solvent can be collected and reused for subsequent separations, reducing the overall amount of chemical waste produced
Solution Approach 2:
The patent selectively extracts and removes only the necessary impurities through column chromatography, avoiding the need for large-scale waste disposal operations associated with conventional multi-step methods
4Productivity
If the conventional method is used, then the reaction can be performed, but unreacted raw materials cannot be effectively separated
Solution Approach 1:
The patent uses HPLC monitoring to track the reaction progress and separation efficiency in real-time, allowing for optimization of reaction conditions and column parameters to ensure complete separation of unreacted raw materials from the product
Solution Approach 2:
The patent replaces mechanical separation methods (filtration, centrifugation) with a chemical separation mechanism based on differential adsorption in column chromatography, providing more effective separation of unreacted materials while maintaining high yield
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 method increases the yield to over 70% and achieves HPLC purity of ≥99.5%, meeting API quality standards and being more suitable for large-scale production with reduced waste and operational complexity.
Implementation Method 1
separating and purifying the reaction solution containing Cangrelor tetrasodium salt obtained in step (2) by column chromatography
Implementation Method 2
lyophilizing to obtain Cangrelor tetrasodium salt
Implementation Method 3
reacting the reaction solution containing the compound B obtained in step (1) with clodronic acid or a monosalt thereof in the presence of an acid-binding agent, and then with sodium bicarbonate to obtain a reaction solution containing Cangrelor tetrasodium salt
Data Source
AI summary
The present application relates to a method for prepare a Cangrelor tetrasodium salt, comprising: using N-[2-(methylthio)ethyl]-2-[(3,3,3-trifluoropropyl)sulfonyl]adenosine as a raw material to undergo two steps of reaction to obtain a reaction solution containing the Cangrelor tetrasodium salt; separating and purifying once by C18 silica gel column chromatography so as to obtain a Cangrelor tetrasodium salt pure product. The present application has the advantages of short synthesis route, mild reaction conditions, sufficient reaction, simple operation, high product yield, high purity, and environmental friendliness, and is suitable for large-scale preparation.