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Solid-phase synthesis of constrained terminal and internal lactam peptidomimetics
William L Scott1, Jordi Alsina, Joseph H Kennedy
1Department of Chemistry, Indiana University Purdue University Indianapolis, Indianapolis, Indiana 46202, USA. wscott@chem.iupui.edu
Organic Letters
|May 7, 2004
Summary
This study demonstrates the solid-phase synthesis of five- and six-membered lactam peptidomimetics. The synthesis method effectively preserves stereochemical integrity, avoiding significant racemization of remote stereocenters.
Area of Science:
- Medicinal Chemistry
- Organic Synthesis
- Peptide Chemistry
Background:
- Lactams are crucial building blocks in peptidomimetics.
- Peptidomimetics are valuable for drug discovery due to their stability and tailored properties.
- Developing efficient synthetic routes for lactam-containing peptidomimetics is essential.
Purpose of the Study:
- To develop a solid-phase synthesis method for constructing five- and six-membered lactam peptidomimetics.
- To evaluate the stereochemical outcome of the synthesis, specifically focusing on racemization.
- To demonstrate the incorporation of hydrogen or amino acid side chains at the alpha-position.
Main Methods:
- Solid-phase synthesis utilizing peptide precursors.
- Cyclization strategies to form five- and six-membered lactam rings.
- Analytical techniques to assess stereochemical purity and identify racemization.
Main Results:
- Successful construction of five- and six-membered lactam peptidomimetics.
- Demonstrated ability to incorporate diverse side chains (hydrogen or amino acid) at the alpha-position.
- No significant racemization of remote stereocenters was observed during the synthesis.
Conclusions:
- The developed solid-phase synthesis is an effective method for creating lactam peptidomimetics.
- The synthetic route preserves the stereochemical integrity of the peptide precursors.
- This approach offers a valuable tool for generating complex peptidomimetic structures for various applications.