S1P1 Modulator Synthesis via Coupling Reagents and Thermal Cyclodehydration
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Solution Overview
Problem
Current methods for preparing compounds modulating S1P1 receptor activity are limited by the need for improved synthesis processes to produce pharmaceutically acceptable salts effectively.
Innovation Solution
The development of specific methods involving coupling reagents, additives, and thermal cyclodehydration conditions to synthesize compounds of Formula (I) and their pharmaceutically acceptable salts, including steps such as adding EDC hydrochloride and ethyl cyanohydroxyiminoacetate to a solution in dimethylformamide, heating, cooling, and filtering to obtain the desired compounds.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If current synthesis methods are used to prepare S1P1 modulator compounds, then the basic synthesis can be achieved, but the production efficiency and purity are insufficient for pharmaceutical applications
Solution Approach 1:
The patent optimizes reaction parameters including temperature (heating to 40-95°C), reaction time (1-24 hours), and solvent selection (dimethylformamide, dichloromethane, ethyl acetate) to simultaneously improve synthesis efficiency and compound purity. The coupling reagent EDC hydrochloride is used at optimized molar ratios to enhance both yield and purity of the S1P1 modulator compounds
Solution Approach 2:
The patent introduces specific coupling reagents (EDC hydrochloride) and additives (ethyl cyanohydroxyiminoacetate) as intermediaries to facilitate the synthesis reaction. These intermediaries enable efficient coupling while maintaining high purity by preventing side reactions and facilitating product isolation through controlled precipitation and filtration
2Manufacturing precision
If synthesis conditions are optimized for high purity, then compound quality improves, but the synthesis time and process complexity increase
Solution Approach 1:
The patent performs preliminary optimization of reaction conditions before full synthesis, determining optimal molar ratios of reagents, solvent volumes, and temperature profiles in advance. This preliminary characterization allows subsequent syntheses to proceed efficiently with predetermined parameters that ensure both high purity and reasonable timeframes
Solution Approach 2:
The patent utilizes phase transitions during the synthesis process, specifically controlling the precipitation of the product from solution by adjusting temperature and solvent composition. The product crystallizes in a controlled manner, allowing for rapid filtration and isolation of high-purity compound without requiring extended purification times
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 methods enable the efficient production of compounds with high purity and stability, suitable for modulating S1P1 receptor activity, enhancing the synthesis processes for pharmaceutical applications.
Implementation Method 1
adding EDC hydrochloride and ethyl cyanohydroxyiminoacetate to a solution of a compound of Formula (II) in dimethylformamide to form a mixture
Implementation Method 2
heating the mixture of step (b) to a temperature at about 95° C. and stirring the mixture under the temperature for at least about 5 hour
Implementation Method 3
cooling the mixture of step (c) to about 15-20° C. and adding water to the mixture form a slurry
Implementation Method 4
drying the solid of step (g) at about 55° C. under vacuum to form the compound of Formula (I)
Data Source
AI summary
The present embodiments are directed, in part, to processes and compositions that can, for example, be used in the preparation compounds of Formula (I), or a pharmaceutically acceptable salts thereof.