D-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 an amino acid backbone embedded in the ring system. The molecule contains a ring nitrogen and a carboxyl functional group, and its "D" designation indicates the specified stereochemical form at the 2-position. It is used as a building block in peptide and peptidomimetic synthesis and in structure-activity studies where conformationally constrained, ring-containing amino acid analogues are incorporated or employed for analytical method development.
CAT No: CP22502
D-piperidine-2-carboxylic acid is a chiral, cyclic amino acid analog featuring a six-membered piperidine ring with a carboxylic acid at the 2-position and defined D-stereochemistry. The molecule presents a secondary amine embedded in the ring and a carboxylic acid that can participate in acid-base behavior, salt formation, and amide bond construction after activation. The constrained ring topology and stereogenic center at C-2 influence conformational preferences and can affect coupling stereochemistry and downstream binding interactions in structure-based designs. As an amino acid-like scaffold, it functions as a chiral intermediate for preparing protected derivatives and for building nitrogen-containing motifs relevant to medicinal chemistry and process-scale synthesis.
1. Chiral Building Blocks
D-piperidine-2-carboxylic acid is used in chiral synthesis programs where a stereodefined, nitrogen-containing amino acid mimic is required. The D-configured C-2 stereocenter and the cyclic secondary amine enable stereochemically controlled derivatization through carboxyl activation to form amides or through amine protection to tune reactivity. Protecting-group strategies such as carboxyl esterification and N-protection can be applied to manage chemoselectivity during multi-step syntheses and to support sequential functional group transformations. The resulting protected amino acid derivatives can serve as chiral building blocks for fine chemical synthesis, including the preparation of constrained scaffolds used in synthetic organic chemistry and stereochemical method development.
2. Peptide Coupling Intermediates
D-piperidine-2-carboxylic acid is suitable for peptide chemistry workflows that incorporate noncanonical amino acid residues or generate peptide-like linkages. The carboxylic acid group can be converted into activated coupling partners, while the ring nitrogen can be protected to prevent side reactions during amide bond formation. The cyclic structure can influence the geometry of the resulting amide and can be used to construct constrained peptidomimetic segments that retain defined stereochemistry at the residue position. Downstream, the compound can be employed to prepare N-protected or C-terminal functionalized derivatives that integrate into peptide synthesis strategies for library generation and SAR studies focused on backbone constraint effects.
3. Peptidomimetics And SAR Studies
D-piperidine-2-carboxylic acid is applied in medicinal chemistry research aimed at peptidomimetic construction and structure-activity relationship investigations. The combination of a carboxylate handle and a conformationally restricted piperidine nitrogen supports scaffold design where hydrogen-bonding patterns and spatial orientation are tuned by stereochemistry. Derivatization through amide formation, ester-to-amide conversion, or N-functionalization can generate analogs that probe how ring-constrained amino acid replacements affect binding and selectivity trends. The stereodefined amino acid analog can also serve as a precursor for generating fragment-sized modules used in molecular design and SAR mapping, supporting iterative synthesis of analog series.
4. Chemical Manufacturing Intermediates
D-piperidine-2-carboxylic acid is relevant to process chemistry and specialty chemical production as a chiral intermediate for manufacturing nitrogen-containing building blocks. The stable carboxylic acid functionality supports salt formation and controlled downstream activation, while the secondary amine can be protected or converted to derivatives compatible with industrial coupling steps. The constrained piperidine framework can simplify purification logic by enabling selective protection/deprotection sequences and by reducing conformational heterogeneity relative to open-chain analogs. Industrially, the compound can be used to prepare protected amino acid intermediates and downstream amide-forming reagents that feed into fine chemical synthesis routes for research-grade and scale-up manufacturing of chiral heterocycle-bearing molecules.
5. Bioconjugation and Biomolecule Labeling
D-piperidine-2-carboxylic acid can be employed in chemical biology workflows that require amino acid-like handles for biomolecule modification. The carboxylic acid can be transformed into activated intermediates for amide coupling to carrier proteins, linkers, or scaffold molecules, while N-protection can be used to control chemoselectivity during conjugation. The cyclic amine provides a functional nitrogen that can participate in linker design, including incorporation into constrained conjugates intended to modulate sterics around the attachment point. Downstream, the compound-derived conjugation reagents and peptidomimetic linkers can support analytical research, such as preparing defined standards or constructing labeled molecular probes for studying molecular recognition and reaction compatibility in biochemical assays.
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