DL-piperidine-2-carboxylic acid is a cyclic, non-proteinogenic amino acid derivative featuring a piperidine ring with a carboxylic acid at the 2-position, and it is supplied as a racemic (DL) mixture. The molecule contains both an amino functionality on the ring and a carboxyl group, with the ring nitrogen providing basic character that can influence salt formation and overall protonation behavior in aqueous media. In synthesis and chemical biology workflows, it is used as a building block for constructing constrained amino acid motifs in peptide and peptidomimetic analogues and as a reference substrate or structural component in analytical method development for amino acid derivatives.
CAT No: CP22503
DL-piperidine-2-carboxylic acid is a cyclic, non-proteinogenic amino acid analog featuring a piperidine ring with a carboxylic acid at the 2-position, providing a stereochemically defined chiral center in the DL mixture. The structure presents a basic ring nitrogen alongside a carboxylic acid that can be converted into activated esters, amides, or protected derivatives for downstream coupling chemistry. The conformationally constrained scaffold can influence amide bond formation geometry and side-chain orientation in peptidomimetic and medicinal chemistry contexts. As a chiral amino acid intermediate precursor, it can be processed through protection and activation strategies to support solid-phase or solution-phase assembly, as well as synthetic diversification into substituted piperidine derivatives.
1. Peptidomimetic Building Block
DL-piperidine-2-carboxylic acid supports peptidomimetic construction where a constrained piperidine side chain is used to emulate amino acid spacing while modulating backbone flexibility. The carboxylic acid functionality enables conversion to protected amino acid derivatives and coupling-ready activated species, while the ring nitrogen provides a handle for selective N-protection and later deprotection or functionalization. Stereochemical control is addressed by selecting appropriate resolution or stereoselective downstream transformations when enantiopure analogs are required for structure-activity relationship studies. Incorporation into peptide-like scaffolds can be applied to generate conformationally restricted amide linkages and to build libraries of amino acid replacements for medicinal chemistry research.
2. Chiral Resolution Intermediate
DL-piperidine-2-carboxylic acid serves as a starting chiral amino acid intermediate for preparing enantiopure piperidine-2-carboxylate derivatives used in asymmetric synthesis planning. The presence of a carboxylic acid and a basic ring nitrogen enables formation of diastereomeric salts or protected intermediates that can be separated to access single-enantiomer building blocks. Protecting-group strategies can be employed to manage the ring nitrogen during resolution and subsequent functional group transformations, including esterification, amidation, or conversion to coupling reagents. Downstream formation of enantiopure piperidine carboxylic acid derivatives supports stereochemically defined fragment synthesis and chiral scaffold generation for synthetic organic chemistry and medicinal chemistry workflows.
3. Pharmaceutical Intermediate Synthesis
DL-piperidine-2-carboxylic acid is used in pharmaceutical intermediate preparation where cyclic amine carboxylic acid motifs are common in small-molecule design. The carboxylic acid can be transformed into amide-forming intermediates, while the piperidine nitrogen can be protected to enable selective chemistry on the acid-derived functionality without uncontrolled salt formation. C-terminal modification analogs can be accessed through ester or activated ester routes, supporting downstream coupling to heterocycles, aromatic amines, or other nucleophiles in fine chemical synthesis. Industrially relevant synthetic sequences may incorporate this scaffold as a controlled, isolable amino acid-like precursor for manufacturing route development of piperidine-containing intermediates.
4. Chemical Biology Reagent Design
DL-piperidine-2-carboxylic acid can be applied to chemical biology research as a building block for constrained amino acid analogs used in binding studies and molecular probe design. The carboxylic acid supports derivatization into amide or ester linkers that can be appended to targeting ligands, reporters, or affinity handles, while the ring nitrogen can be tuned through protection and functionalization to control charge state and conjugation behavior. Peptide coupling compatibility allows incorporation into peptide conjugates or peptidomimetic probes to probe receptor-like interactions and to map binding preferences. Downstream derivatives produced from this scaffold can serve as standardized intermediates for generating probe sets used in biochemical assay development and molecular recognition investigations.
5. Process Chemistry Intermediate
DL-piperidine-2-carboxylic acid is suitable for process chemistry intermediate preparation due to its straightforward amino acid-like functional group pattern and its compatibility with protection/activation strategies. The carboxylic acid can be converted into ester or activated forms for controlled downstream coupling steps, while the secondary amine in the piperidine ring can be managed via N-protection to reduce side reactions during multi-step synthesis. The conformationally constrained ring can improve reproducibility of intermediate behavior in synthetic sequences that require consistent reactivity profiles for amide bond formation. Industrial chemical manufacturing can employ this compound as a chiral amino acid intermediate precursor for generating piperidine-based derivatives used in specialty chemical production and fine chemical synthesis.
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