Azapeptide Dimer Building Blocks for Faster Stable Peptidomimetic Synthesis
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Solution Overview
Problem
The synthesis of azapeptides and aza-amino acid conjugates is challenging due to the slow formation of aza-peptide bonds and orthogonal functionalization issues with conventional coupling agents, leading to potential side products and inefficiencies in synthesis.
Innovation Solution
The development of dimers that serve as stable building blocks for synthesizing azapeptides and aza-amino acid conjugates, capable of being activated under milder conditions and resistant to hydrolysis, with specific compounds formulated to maintain stability in aqueous solutions for extended periods.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If conventional coupling agents and methods are used for azapeptide synthesis, then the aza-peptide bond can be formed, but the reaction rate is much slower than typical peptide bond formation
Solution Approach 1:
The patent changes the chemical parameters of the coupling system by introducing new coupling reagents and activation methods that specifically accelerate aza-peptide bond formation. This resolves the contradiction by modifying reaction conditions to achieve both faster rates and higher selectivity, preventing side product formation while improving reaction speed.
Solution Approach 2:
The patent employs intermediary compounds and activated esters as mediators in the coupling process. These intermediaries facilitate faster and more selective formation of aza-peptide bonds, resolving the contradiction between slow reaction rate and side product formation by providing a more efficient reaction pathway.
2Reliability
If aza-amino acids are used in synthesis, then azapeptides with improved metabolic stability can be produced, but the synthesis becomes more challenging due to reduced reactivity and orthogonal functionalization requirements
Solution Approach 1:
The patent segments the synthesis process into modular steps with protected aza-amino acid building blocks. This allows for easier manipulation and assembly, reducing the overall synthesis difficulty while maintaining the metabolic stability benefits of aza-peptides.
Solution Approach 2:
The patent performs preliminary protection of nitrogen atoms in aza-amino acids before coupling reactions. This preliminary action simplifies subsequent synthesis steps by preventing unwanted side reactions and enabling straightforward orthogonal functionalization, thereby reducing overall synthesis difficulty.
3Stability of the object's composition
If conventional peptide synthesis methods are used, then peptides can be assembled, but they exhibit limited stability and short half-lives due to hydrolysis and enzymatic degradation
Solution Approach 1:
The patent creates composite peptidomimetic structures that combine aza-peptide segments with other stable molecular frameworks. This composite approach enhances hydrolytic and enzymatic stability while maintaining synthesis efficiency through the use of standardized coupling protocols.
Data Source
AI summary
Dimers for use in synthesis of peptidomimetics are described. Uses of dimers as synthons in synthesis of azapeptides and other peptidomimetics, azapeptides and other peptidomimetics synthesized from the dimers and uses of azapeptides and other peptidomimetics are also described.