GalNAc Tripolymer Precursor Synthesis With Fewer Chromatography Steps
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing methods for producing N-acetyl-D-galactosamine tripolymer precursors involve multiple rounds of column chromatography, leading to low yields and high production costs.
Innovation Solution
A streamlined synthesis process for N-acetyl-D-galactosamine tripolymer precursors is developed, utilizing fewer chromatographic steps and alternative condensing agents to improve yields and reduce costs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If multiple rounds of column chromatography are performed for purification, then product purity is improved, but production yield deteriorates and production cost increases
Solution Approach 1:
The patent extracts and removes the problematic column chromatography steps from the synthesis process. Instead of performing multiple rounds of column chromatography, the invention uses alternative purification methods that achieve the required purity without the significant material losses associated with column chromatography, thereby improving production yield while maintaining product purity
Solution Approach 2:
The patent changes the purification parameters and methods used in the synthesis process. By replacing column chromatography with different purification techniques (such as precipitation, filtration, or alternative chromatography methods with better recovery rates), the process maintains the necessary product purity while reducing material loss and improving overall production yield
2Manufacturing precision
If multiple rounds of column chromatography are performed for purification, then product purity is improved, but production cost increases
Solution Approach 1:
The patent removes the expensive column chromatography steps from the manufacturing process. By eliminating these costly purification operations and replacing them with more economical methods that achieve the same purity level, the invention significantly reduces production costs while maintaining the required product quality
Solution Approach 2:
The patent employs simpler, more cost-effective purification methods instead of expensive column chromatography. By using affordable alternatives such as precipitation, filtration, or single-pass chromatography with recyclable materials, the invention achieves the necessary product purity at a much lower production cost
3Manufacturing precision
If the synthetic route is extended with more purification steps, then product quality is improved, but process complexity increases
Solution Approach 1:
The patent extracts and eliminates the unnecessary purification steps from the synthetic route. By removing redundant column chromatography operations and keeping only the essential purification steps, the invention simplifies the overall process while maintaining the required product quality
Solution Approach 2:
The patent combines multiple purification functions into fewer, more efficient steps. By merging sequential purification operations into integrated processes or using multi-functional purification methods, the invention reduces process complexity while achieving the necessary product quality standards
Data Source
AI summary
Disclosed is a method for preparing an N-acetyl-D-galactosamine tripolymer precursor. In the preparation of the tripolymer precursor, a compound 4 is prepared by the following steps: adding a compound 3, a 4 Å molecular sieve powder, and a reaction solvent into a reactor; inflating and changing protective gas for 3 times; stirring; firstly adding an enol, followed by slowly dropping trimethylsilyl trifluoromethanesulfonate; after a reaction, quenching the reaction with an alkali solution; and performing extraction, separating liquid, washing, drying, filtration, etc., so as to obtain the compound 4. According to the present disclosure, the problems of various production processes, more times of column chromatography for purification of products accompanied by lower yields in the prior art are solved.