Aromatic-Cationic Peptide Synthesis via Transition Metal Catalysis
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Solution Overview
Problem
Current methods for synthesizing specific peptides are inefficient and do not effectively produce pharmaceutically acceptable salts with desired structural and functional properties.
Innovation Solution
A process involving the combination of a compound of formula VIII with a hydrogen source and a transition metal catalyst, using specific solvents and conditions to form a compound of formula I or its pharmaceutically acceptable salt, which includes various alkyl, aryl, and heterocyclyl groups, and involves multiple steps of compound formation and cleavage with specific acids and coupling agents.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If traditional peptide synthesis methods are used, then the synthesis process can be completed, but the yield and purity of the peptides are insufficient
Solution Approach 1:
The patent employs specific parameter changes including using formic acid as a cleaving acid at controlled temperatures (0°C to room temperature), selecting specific coupling agents (HATU, HBTU, EDC), and controlling the stoichiometry of reactants. These parameter optimizations directly improve both peptide purity and synthesis efficiency simultaneously
Solution Approach 2:
The patent uses protective groups (Fmoc, Boc, Cbz) as intermediaries that temporarily mask reactive functional groups during synthesis. These intermediaries enable selective reactions and improve purity by preventing unwanted side reactions, while the efficient deprotection strategies maintain overall synthesis efficiency
2Productivity
If conventional synthesis procedures are applied, then the process can be completed, but the yield of the desired peptide product is low
Solution Approach 1:
The patent implements preliminary protection of amino acid functional groups with orthogonal protective groups before synthesis begins. This preliminary action prevents side reactions during coupling, ensuring high yield of the desired product with minimal impurities, thereby simultaneously improving both yield and purity
Solution Approach 2:
The patent replaces traditional coupling reagents with more efficient modern coupling agents such as HATU and HBTU, which provide faster and more complete coupling reactions. This substitution increases reaction efficiency and yield while maintaining high purity through reduced side products
3Adaptability or versatility
If simple synthesis methods are used, then the process is straightforward, but the structural complexity and functional properties of the peptides are insufficient
Solution Approach 1:
The patent divides the peptide synthesis into modular segments using standard amino acid building blocks with orthogonal protective groups. Each amino acid can be independently prepared and coupled, allowing systematic construction of complex structures while maintaining manageable process complexity through standardized procedures
Solution Approach 2:
The patent employs universal coupling conditions and reagents that can be applied across different amino acid couplings. The use of orthogonal protective group strategies allows the same deprotection conditions to be applied universally without affecting other protected groups, simplifying the overall process despite the complexity of the target structures
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 process enhances the yield and purity of the peptides, allowing for the production of peptides with improved structural and functional properties, suitable for pharmaceutical applications.
Implementation Method 1
combining a compound of formula VIII with a hydrogen source and a transition metal catalyst to form a compound of formula I
Implementation Method 2
combining a compound of formula VIII with a hydrogen source and a transition metal catalyst to form a compound of formula I
Data Source
AI summary
The present technology provides peptides, methods of generating the peptides, and pharmaceutically acceptable salts of the peptides. In some embodiments, the peptide is D-Arg-2'6'-Dmt-Lys-Phe-NH2.