Artificial Macrocycles by Ugi Reaction and Passerini Ring Closure.
Eman M M Abdelraheem1,2, Katarzyna Kurpiewska3, Justyna Kalinowska-Tłuścik3
1Department of Drug Design, University of Groningen , A. Deusinglaan 1, 9713 AV Groningen, The Netherlands.
Researchers synthesized artificial macrocycles using Ugi and Passerini multicomponent reactions (MCRs). This study details the first intramolecular macrocyclization via a Passerini reaction, creating novel macrocyclic depsipeptides for drug discovery.
Area of Science:
- Organic Chemistry
- Medicinal Chemistry
- Synthetic Chemistry
Background:
- Multicomponent reactions (MCRs) offer efficient synthetic routes.
- Macrocycles are important scaffolds in natural products and drug discovery.
- Intramolecular reactions are key for efficient macrocycle formation.
Purpose of the Study:
- To describe the first intramolecular macrocyclization using a Passerini reaction.
- To synthesize novel artificial macrocycles.
- To create model compounds for natural products with potential drug discovery applications.
Main Methods:
- Convergent synthesis strategy.
- Sequential Ugi and intramolecular Passerini multicomponent reactions.
- Characterization of 21 artificial macrocycles (15-20 membered).
Main Results:
- Successful demonstration of the first intramolecular Passerini macrocyclization.
- Synthesis of 21 novel macrocyclic depsipeptides.
- Characterization of the size and structure of the synthesized macrocycles.
Conclusions:
- The described method provides a novel route to artificial macrocycles.
- The synthesized macrocyclic depsipeptides serve as valuable models for natural products.
- These compounds hold promise for future drug discovery efforts.
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