The field of peptide chemistry has seen transformative progress, particularly regarding the total synthesis of complex, macrocyclic scaffolds. Among these, lanthipeptides—defined as ribosomally synthesized and posttranslationally modified peptides—represent a fascinating class of compounds. As a dedicated user and enthusiast of peptide research, I have followed the evolution of their by LK Mueller · 2020 · Cited by 164 — In this review we highlight, summarize and evaluate the possibilities for synthetic production of “difficult sequences” by SPPS, native chemical ligation (NCL) production, specifically how SPPS (Solid Phase Peptide Synthesis) has become a cornerstone in the laboratory.
Understanding the Landscape of Lanthipeptide Synthesis
Lanthipeptide biosynthesis is very widely distributed in nature, primarily within microbial gene clusters. However, for those of us interested in structural analogs or non-natural variants, chemical synthesis is often the preferred route. My interest in this area stems from the need to understand how we can manipulate these sequences to study their unique biological properties.
Recent reviews by A Jalan · 2025 · Cited by 5 — [1] To enable the commercial synthesis of Tirzepatide (TZP, 1), we designed an innovative four-fragment hybrid SPPS/LPPS strategy that highlight a significant shift in methodology. While nature uses complex enzymatic machinery, the chemical approach relies on the precision of SPPS. This method is a scalable, practical, economical, convenient, and efficient method for generating high-quality peptides. The total synthesis of the lantibiotic lacticin 481 stands as a landmark by LM Repka · 2017 · Cited by 633 — As discussed in this review, lanthipeptide biosynthesis is very widely distributed, and based on the number of lanthipeptide gene clusters achievement, demonstrating that even complex cross-links can be installed through rigorous synthetic strategies.
The Role of SPP by SBH Kent · 2025 · Cited by 18 — This perspective essay will briefly recount fundamental physicochemical properties of the peptide‐resin that have led to the almost universal use of stepwise S in Modern Peptide Chemistry
SPPS technology efficiently synthesizes peptides by utilizing an insoluble solid support. From a user’s perspective, the ability to control the sequence stepwise is invaluable. In the complete synthesis of challenging lanthipeptides, the process involves:
1. Resin Selection: Choosing the correct support for the solid-phase synthesis of peptides is critical to avoid premature cleavage.
2. Coupling Efficiency: Utilizing optimized reagents to ensure high yields during each step.
3. Cyclization: The most difficult aspect of a lanthipeptide synthesis is the formation of the (methyl)lanthionine bridges. Recent synthetic strategies often involve late-stage deprotection and macrocyclization.
It is worth noting that SPPS has been successfully used for the total synthesis of several lanthipeptides, proving that the method is not just for linear chains but is robust enough to handle the structural constraints required for these bioactive molecules.
Navigating Recent Advances
The recent advances in the field of microbial derived lanthipeptide research have provided us with a blueprint for designing new variants. When looking through the literature, I often categori De Novo Design To Synthesize Lanthipeptides Involving ze the work into two main pillars:
* Computational Design: Predicting the stability of the macrocyclic structure before committing to the bench.
* Methodological Refinement: Improving the Solid phase peptide synthesis (SPPS) protocol While many reviews have addressed peptide‐based adjuvants, this review specifically focuses on the literature concerning peptide conjugate‐based adjuvants s to reduce side reactions, such as epimerization or premature peptide detachment.
For those of us conducting this work, the primary challenge remains the "difficult sequences" that often aggregate during the assembly process. However, the integration of microwave-assisted heating and improved coupling protocols has made these once-impossible syntheses routine.
Concl Jun 12, 2018 — A novel strategy to construct lanthipeptides is described, which involves cascade reactions of cysteine, including Cys disalkylation elimination, Michael usion
The synergy between nature’s biosynthetic pathways and man-made SPPS is accelerating our understanding of these molecules. Whether you are exploring the total synthesis of a known lantibiotic or attempting to create a novel scaffold, the current literature provides a wealth of data to guide your experimental design. As we continue to refine these techniques, the future of peptide development looks incredibly promising, offering new ways to explore the structural diversity of ribosomally synthesized compounds.