Peptide Macrocyclization Guided by Reversible Covalent Templating.

Area of Science:

• Chemical synthesis
• Supramolecular chemistry
• Organic chemistry

Background:

• Templated synthesis is common in nucleic acid replication but rare for other molecules.
• Creating hetero-complementary copies outside of nucleic acids remains a challenge.

Purpose of the Study:

• To describe a novel method for templated synthesis of homomeric macrocyclic peptides.
• To demonstrate precise control over macrocycle size through template design.

Main Methods:

• Utilized hydrazone formation to pre-organize peptide oligomers on a solid support resin.
• Employed microwave-assisted peptide synthesis for monomer coupling and cyclization.
• Designed flexible templating strands to modulate product size.

Main Results:

• Successfully synthesized homomeric macrocyclic peptides guided by linear templates.
• Demonstrated that altering template length and binding oligomers precisely tunes macrocycle size.
• Released and characterized smaller macrocyclic peptides using hydrolysis and ESI-MS.

Conclusions:

• This study presents a new strategy for templated synthesis of macrocyclic peptides.
• The method allows for tunable synthesis of macrocyclic peptide products.
• This approach opens possibilities for creating custom-sized peptide macrocycles.