Polyisobutene Anchoring for Liquid Phase Peptide Synthesis
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Solution Overview
Problem
Current peptide synthesis methods, particularly in the liquid phase, face challenges with low yields, high costs, and environmental impact due to the need for costly anchoring molecules and complex purification processes, which hinder the production of highly pure peptides suitable for therapeutic use.
Innovation Solution
The method employs polyolefins or oligomers of polyolefins as anchoring molecules, specifically polyisobutene derivatives, to solubilize amino acids in organic solvents, facilitating peptide synthesis and purification through simple extraction or filtration, allowing for the production of highly pure peptides with improved yields and reduced costs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If liquid phase peptide synthesis is used, then flexibility in protecting group choice and ease of automation are improved, but peptide purity and ease of purification deteriorate
Solution Approach 1:
The patent introduces polyolefin as an intermediary substance that mediates between the liquid phase synthesis environment and the peptide product. The polyolefin forms a soluble complex with the peptide during synthesis, enabling easy automation through solution-phase reactions, then allows selective precipitation to achieve high purity separation. This intermediary resolves the contradiction by providing both liquid-phase flexibility and purification efficiency.
2Manufacturing precision
If solid phase synthesis is used, then peptide purity is improved through filtration, but automation difficulty and device complexity increase
Solution Approach 1:
The patent changes the physical state parameter of the synthesis system from solid-supported to solution-phase by using polyolefin. This parameter change allows the system to maintain peptide purity through selective precipitation (controlled by temperature and solvent parameters) while enabling automation through homogeneous liquid-phase reactions that can be performed in standard automated synthesizers without solid-phase handling complexity.
3Ease of operation
If traditional liquid phase synthesis with soluble anchoring molecules is used, then ease of purification is improved, but cost increases and environmental impact worsens
Solution Approach 1:
The patent utilizes phase transition of the polyolefin-peptide complex from soluble in organic phase to insoluble precipitate. The polyolefin remains soluble during synthesis in apolar solvents, enabling easy mixing and reaction, then undergoes phase transition upon addition of polar solvents or temperature change, allowing simple filtration for purification. The polyolefin can be recovered and reused, reducing environmental impact and cost.
4Manufacturing precision
If polyolefin anchoring molecules are used, then peptide purity and ease of purification are improved, but solubility in apolar solvents deteriorates
Solution Approach 1:
The patent creates a composite system where polyolefin (apolar polymer) forms a complex with the peptide through hydrophobic interactions and van der Waals forces. This composite maintains solubility in apolar solvents during synthesis due to the polyolefin's apolar nature, then allows selective precipitation for purification. The composite material approach resolves the solubility-purity contradiction by using the polyolefin's dual characteristics.
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
This approach enables the synthesis of highly pure peptides in the liquid phase with increased yields and reduced ecological footprint, suitable for both natural and non-natural amino acids, by using commercially available or easily synthesized polyisobutene derivatives, which can be recycled, thus addressing the limitations of existing methods.
Implementation Method 1
derivatives of polyolefins or oligomers of polyolefins or polyalkenes, which, bonded to an amino acid or an amino acid derivative, exhibit good solubility in apolar solvents
Implementation Method 2
purification thereof by simple extraction or washing, in the present case with water
Data Source
AI summary
The invention relates to a method for synthesizing peptides or proteins by successively elongating the second end of a peptide chain, the carboxylic acid function (C-terminal) or the amine function Na of which is attached to an anchoring molecule that is soluble in an apolar solvent, characterized in that said anchoring molecule comprises a polyolefin chain with at least 10 monomer units, and preferably between 15 and 50 units.