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Solid-supported synthesis of a peptide beta-turn mimetic
A Golebiowski1, S R Klopfenstein, X Shao
1Procter & Gamble Pharmaceuticals, Combinatorial Chemistry Group, Health Care Research Center, Mason, Ohio 45040-8006, USA. golebiowskia@pg.com
Organic Letters
|September 16, 2000
Summary
Solid-supported synthesis creates bicyclic diketopiperazines, potential peptide beta-turn mimetics. The Ugi reaction is the key step for this novel solid-phase peptide synthesis protocol.
Area of Science:
- Organic Chemistry
- Medicinal Chemistry
- Peptide Chemistry
Background:
- Peptide secondary structures like beta-turns are crucial for protein function.
- Developing mimetics of these structures can lead to novel therapeutics.
- Solid-phase synthesis offers advantages in efficiency and purification.
Purpose of the Study:
- To describe a novel solid-supported synthesis of bicyclic diketopiperazines.
- To establish a potential peptide beta-turn mimetic.
- To utilize the Ugi reaction in a solid-phase synthesis approach.
Main Methods:
- Solid-phase synthesis utilizing resin-bound starting materials.
- Employing the Ugi four-component reaction as the key synthetic step.
- Incorporating alpha-N-Boc-diaminopropionic acid, an alpha-bromo acid, an aldehyde, and an isocyanide.
Main Results:
- Successful synthesis of a bicyclic diketopiperazine scaffold on a solid support.
- Demonstration of the Ugi reaction's utility in this solid-phase context.
- Generation of a compound class with potential as peptide beta-turn mimetics.
Conclusions:
- The described method provides an efficient route to bicyclic diketopiperazines.
- This solid-supported approach is suitable for generating peptide beta-turn mimetics.
- The Ugi reaction is a powerful tool for solid-phase combinatorial chemistry.