D-2,3-Diaminopropionic acid is a D-configured, non-proteinogenic amino acid featuring a three-carbon backbone bearing two amino substituents at the 2- and 3-positions. The molecule contains both amino functional groups and a carboxyl group, with the additional side-chain amino functionality increasing its overall basicity and providing multiple sites for salt formation, derivatization, or orthogonal functional group manipulation during synthesis. D-2,3-Diaminopropionic acid is used in peptide and amino acid derivative preparation and in structure-activity or chemical biology studies where incorporation of a diamino-substituted residue or a chemically reactive amine handle is required for conjugation, labeling, or further functionalization.
CAT No: CP05801
D-2,3-Diaminopropionic acid is a D-configured amino acid derivative featuring two adjacent primary amine groups on a three-carbon backbone, along with a carboxylic acid functionality that can exist as a zwitterion under aqueous conditions. The vicinal diamine motif strongly influences hydrogen-bonding capacity, metal coordination behavior, and nucleophilicity, while the stereogenic center at the β-position controls chiral recognition in derivatization and coupling chemistry. The free carboxylic acid enables formation of activated esters or amide-linked intermediates, whereas the two amines can be selectively protected to tune chemoselectivity for stepwise synthesis. As a chiral diamino acid building block, D-2,3-diaminopropionic acid serves as a stereodefined intermediate for peptide-related scaffolds, crosslinkable linkers, and nitrogen-rich functional molecules in both research and industrial fine chemical workflows.
1. Peptide Coupling Chemistry
D-2,3-Diaminopropionic acid is applied in peptide synthesis and peptide analog construction where a diamino acid residue can be incorporated as a constrained, nitrogen-dense building block. The carboxyl group participates in standard amino acid coupling chemistry after activation, while the vicinal side-chain amines can be masked with orthogonal protecting groups to enable selective N-terminal or side-chain functionalization during chain assembly. The D stereochemistry supports stereodefined incorporation into oligopeptides and peptidomimetic scaffolds, where amine positioning can affect conformational preferences and intramolecular hydrogen bonding. Downstream, protected derivatives can be deprotected in controlled sequences to yield peptides or peptide-like structures bearing free primary amines for further derivatization and conjugation.
2. Side-Chain Functionalization
D-2,3-Diaminopropionic acid is used for side-chain functionalization strategies that exploit the two primary amines for selective derivatization and downstream attachment chemistry. The adjacent amine array enables formation of urea, carbamate, sulfonamide, and amide linkages depending on protection state, allowing construction of nitrogen-rich motifs for chemical biology probes and material-reactive handles. Chemoselective protection of one amine while leaving the other reactive can facilitate stepwise introduction of labels, solubilizing groups, or crosslinking moieties without disturbing the carboxyl-derived connectivity. The resulting functionalized amino acid derivatives can serve as intermediates for conjugation reagents, polymerizable monomers, and scaffold elaboration in synthetic organic chemistry.
3. Chiral Building Block Synthesis
D-2,3-Diaminopropionic acid is employed as a chiral amino acid intermediate for stereoselective synthesis of diamino-containing targets where D-configuration must be retained. The stereogenic center and the presence of two nucleophilic amines make protection-group planning central to maintaining chemoselectivity across multi-step sequences, including formation of protected amino acid esters, amides, and activated carboxy intermediates. The compound's ability to undergo controlled N-protection and subsequent deprotection supports iterative synthesis of chiral intermediates for peptidomimetics, receptor-binding fragments, and nitrogen-rich heterocycle precursors. Downstream, D-2,3-Diaminopropionic acid-derived intermediates can be routed into fine chemical production schemes requiring defined stereochemical outcomes.
4. Bioconjugation And Labeling
D-2,3-Diaminopropionic acid is suitable for bioconjugation and labeling workflows that require primary amine functionality for stable covalent attachment to biomolecular targets. The vicinal diamine motif can be protected during coupling to avoid uncontrolled crosslinking, then deprotected to generate reactive amines for conjugation to activated carboxylates, activated esters, isothiocyanates, or electrophilic labeling reagents. The D stereochemistry can be leveraged in probe design where chiral recognition and spatial arrangement of amines influence binding to receptors or affect labeling specificity in chemical biology experiments. The resulting conjugatable intermediates support preparation of amino acid-based linkers, tagged peptides, and amine-functional probe scaffolds for downstream analytical and mechanistic studies.
5. Industrial Process Intermediate
D-2,3-Diaminopropionic acid is applied as a process chemistry intermediate for manufacturing nitrogen-rich building blocks used in specialty chemical production. The combination of carboxylic acid reactivity and dual amine functionality supports conversion into protected amino acid derivatives, activated intermediates, and crosslinker precursors under controlled protection-state management. The compound's stereodefined D configuration can be carried through to downstream products where consistent chiral identity and reproducible functional group spacing are required for polymer modification, coating chemistry, or fine chemical synthesis. The diamino acid backbone can also feed into industrial routes that generate amine-reactive intermediates for formulation components and intermediate-grade reagents used across applied chemical manufacturing.
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