N-Boc-4-oxo-L-proline

N-Boc-4-oxo-L-proline is a high-purity pharmaceutical-intermediates supplied for industrial and specialty chemical applications. Contact our team for specifications, packaging options and lead times.

1. Peptide Synthesis

● N-Boc-4-oxo-L-proline is primarily used as a protected amino acid building block in solid-phase and solution-phase peptide synthesis

● Enables the incorporation of modified proline residues into peptides and proteins, which can:
Influence the secondary structure of peptides
Improve biological activity and stability
Modulate enzyme recognition or substrate specificity

2. Design of Conformationally Constrained Peptides

● The 4-oxo modification introduces a rigid ketone functional group into the proline ring

● Useful for creating conformationally restricted peptides, which can enhance:
Receptor selectivity
Bioavailability
Protease resistance

3. Medicinal Chemistry and Drug Discovery

● A valuable intermediate in the design of peptidomimetics, enzyme inhibitors, and ligands

● Modifies the chemical and steric environment in lead compounds to optimize:
Binding affinity
Pharmacokinetics
Metabolic stability

4. Synthesis of Cyclic and Heterocyclic Compounds

● The keto-proline structure serves as a precursor for complex ring systems

● Used in:
Development of natural product analogs
Synthetic studies on beta-turn mimetics and macrocyclic frameworks

5. Research in Protein Engineering

● Incorporated into engineered proteins or synthetic analogs to study:
The role of proline oxidation
The impact of ring strain and carbonyl group on protein folding and function

1. Protecting Group Utility (Boc)

● The Boc group protects the nitrogen atom during multistep synthesis, allowing selective reactions at other sites

● Easily removed under mild acidic conditions, making it compatible with peptide synthesis workflows

2. Enhanced Peptide Properties

● The 4-oxo group introduces a site for further chemical modifications (e.g., reductive amination, oxime formation)

● Improves hydrogen bonding capabilities and electronic characteristics of peptides

3. Synthetic Flexibility

● Can be derivatized to a wide range of analogs, such as:
Hydroxylated or reduced forms
Ring-expanded or -contracted derivatives

● Excellent for SAR (Structure–Activity Relationship) studies in drug discovery

4. Improved Stability and Shelf Life

● The Boc-protected form is generally stable and easy to handle, offering reliable performance in synthetic chemistry labs

N-Boc-4-oxo-L-proline丨CAS 84348-37-8 is a versatile and strategically valuable intermediate in peptide chemistry, medicinal chemistry, and organic synthesis. Its combination of a Boc-protected nitrogen and a 4-keto substitution on the proline ring allows for precise structural modifications and the creation of functionally enhanced biomolecules. Widely used in drug development, protein engineering, and peptidomimetic research, it plays a critical role in advancing modern synthetic and medicinal chemistry efforts.

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