Liquid Phase Peptide Synthesis Using 2-MeTHF Solvent
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Solution Overview
Problem
Current liquid phase peptide synthesis methods rely on solvents like dichloromethane and tetrahydrofuran, which are not environmentally friendly and require large amounts of reagents and solvents, leading to sub-optimal purity and high environmental impact.
Innovation Solution
The use of 2-methyltetrahydrofuran (2-MeTHF) as a solvent in liquid phase peptide synthesis, which is a greener alternative that reduces the need for solvents, reagents, and improves purity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If traditional solvents like dichloromethane and tetrahydrofuran are used in liquid phase peptide synthesis, then the synthesis can proceed effectively, but the environmental impact increases and health safety deteriorates
Solution Approach 1:
The patent changes the chemical parameter of the solvent system by replacing traditional halogenated solvents (dichloromethane) and ether solvents (tetrahydrofuran) with 2-methyltetrahydrofuran, which has modified molecular structure and properties. This parameter change maintains the solvent's ability to dissolve reagents and facilitate peptide synthesis while eliminating the harmful halogenated components and reducing environmental impact.
Solution Approach 2:
The patent adopts 2-methyltetrahydrofuran as a readily available, inexpensive solvent that can be used in large quantities without long-term environmental persistence concerns. This solvent serves as a temporary medium for the synthesis reaction and can be easily disposed of or recycled, replacing expensive and environmentally persistent traditional solvents.
2Productivity
If large excesses of reagents and solvents are used in solid phase peptide synthesis, then the synthesis speed increases, but the material consumption increases and purity decreases
Solution Approach 1:
The patent changes the physical state parameter of the synthesis system from solid phase (insoluble resins) to liquid phase (soluble substrates in 2-MeTHF). This parameter change allows reactions to proceed in homogeneous solution, improving mass transfer and reaction efficiency while enabling precise control of reagent stoichiometry, thus reducing material consumption.
Solution Approach 2:
The patent applies local quality by creating a homogeneous reaction environment throughout the solution, where all reagents are uniformly distributed and accessible. This eliminates the diffusion limitations inherent in solid phase synthesis, allowing efficient reactions with precise stoichiometric control and reduced reagent excess.
3Productivity
If large excesses of reagents and solvents are used in solid phase peptide synthesis, then the synthesis speed increases, but the manufacturing precision deteriorates
Solution Approach 1:
The patent changes the phase parameter from solid to liquid, enabling homogeneous reactions in solution. This allows for better control of reaction conditions, more accurate stoichiometric ratios, and easier separation of products from reagents, thereby improving batch purity while maintaining synthesis efficiency.
Solution Approach 2:
The patent extracts the reaction from the solid resin matrix environment and places it in a liquid solution environment. This extraction allows for better control over reaction parameters, easier monitoring of reaction progress, and simpler purification steps, leading to higher product purity.
Data Source
AI summary
Disclosed herein are methods of producing peptides, including liquid phase peptide synthesis methods in which one or more cycles of peptide elongation are performed in one pot. In particular, the present disclosure provides liquid phase peptide synthesis methods employing solvent systems comprising 2-methyltetrahydrofuran for condensation reactions, as well as convergent liquid phase peptide assembly methods in which benzyl alcohol anchor groups are selectively removed from an N-protected C-protected peptide by base-catalyzed ester hydrolysis.