N-α-Fmoc-N-β-2,4-dinitrophenyl-D-2,3-diaminopropionic acid is a protected, amino acid derivative featuring an Fmoc group on the α-amino functionality and a D-2,3-diaminopropionic acid backbone bearing a β-amino substituent linked to a 2,4-dinitrophenyl (DNP) aromatic group. The molecule contains a free carboxyl group and two amino sites, with the α-amino protected as Fmoc and the β-amino derivatized with the electron-deficient dinitrophenyl moiety, providing a chromophoric and strongly electron-withdrawing side-chain functionality while maintaining the D stereochemical designation indicated in the name. In peptide and amino-acid chemistry workflows, it functions as a stepwise building block for introducing a D-2,3-diaminopropionic residue under protection of the α-amino group, while the DNP substituent can serve as a handle for analytical detection or for subsequent chemical transformations of the β-amino functionality during synthesis of more complex amino acid and peptide derivatives.
CAT No: CP05835
N-α-Fmoc-N-β-2,4-dinitrophenyl-D-2,3-diaminopropionic acid is a chiral, Fmoc-protected amino acid derivative bearing a D-2,3-diaminopropionic acid backbone with two closely spaced stereogenic centers and a side-chain amino group masked as a 2,4-dinitrophenyl (DNP) carbamate/anilide-type protecting functionality. The molecule contains an aromatic Fmoc group for base-labile N-protection, a strongly electron-withdrawing DNP aromatic moiety that modulates nucleophilicity of the β-amino functionality, and multiple amino sites that can be revealed through selective deprotection strategies. The DNP group provides an optically and spectroscopically distinctive handle for analytical tracking and can participate in electrophile-assisted transformations during peptide and scaffold assembly. The resulting combination of orthogonal protection, defined D-configuration, and side-chain functional masking makes this compound suitable as a stereochemically controlled building block and intermediate for peptide construction and downstream derivatization in amino acid chemistry and applied synthetic methodology.
1. Peptide Synthesis
N-α-Fmoc-N-β-2,4-dinitrophenyl-D-2,3-diaminopropionic acid is applied in solid-phase peptide synthesis and solution-phase peptide coupling workflows where an Fmoc-protected α-amine is required for stepwise N-terminal assembly. The Fmoc group supports standard base-mediated removal, enabling controlled exposure of the α-amino functionality for amide bond formation, while the β-amino group remains masked by the 2,4-dinitrophenyl protection to reduce side reactions during coupling cycles. The D-2,3-diaminopropionic acid stereochemistry can be leveraged to introduce defined chiral geometry into peptide backbones and peptidomimetic scaffolds, influencing conformational preferences and recognition properties. The DNP aromatic fragment can further serve as a diagnostic tag for monitoring deprotection or intermediate handling in peptide building block preparation. The compound therefore functions as a stereodefined, orthogonally protected amino acid derivative for peptide science and synthetic methodology development.
2. Side-Chain Functionalization
N-α-Fmoc-N-β-2,4-dinitrophenyl-D-2,3-diaminopropionic acid is used in amino acid derivatization and side-chain functionalization strategies that require selective control of the β-amino nucleophile. The 2,4-dinitrophenyl group suppresses β-amino reactivity during early synthetic steps, allowing orthogonal unveiling when a downstream transformation demands access to the second amino handle. The presence of a chiral diamino motif enables construction of bifunctional intermediates for further conjugation, cyclization, or formation of urea, amide, or sulfonamide derivatives depending on the coupling chemistry employed. The aromatic DNP moiety can also support analytical confirmation of intermediate identity via characteristic chromophores, improving traceability during fine chemical synthesis. The resulting derivatives can be incorporated into peptidomimetics and molecular scaffolds where controlled diamino presentation is critical for subsequent functional group installation.
3. Chemical Biology Labeling
N-α-Fmoc-N-β-2,4-dinitrophenyl-D-2,3-diaminopropionic acid is relevant to chemical biology workflows that use amino acid-based tags for monitoring biomolecular modification and reaction progress. The orthogonally protected α-amine enables incorporation into peptide or peptide-like constructs, while the DNP-protected β-amino site can be manipulated to generate defined labeling points after deprotection or functional conversion. The strong chromophoric nature of the 2,4-dinitrophenyl group supports spectroscopic tracking of protected intermediates and can aid in verifying the presence or consumption of protected amino functionalities during synthesis. The D-configuration provides a stereochemically defined diamino motif that can be introduced into probes to probe molecular recognition, binding interfaces, or enzyme-substrate specificity without relying on native L-amino acid geometry. The compound thus serves as a chiral amino acid building block for biochemical research intermediate preparation and controlled biomolecule labeling chemistry.
4. Process Chemistry Intermediate
N-α-Fmoc-N-β-2,4-dinitrophenyl-D-2,3-diaminopropionic acid is suitable for industrial process chemistry intermediate preparation where orthogonal protection reduces cross-reactivity and improves manufacturing controllability. The Fmoc group provides a robust N-protection strategy compatible with peptide coupling conditions, while the DNP-protected β-amino functionality helps prevent undesired branching, oligomerization, or multiple substitutions during multistep synthesis. Defined stereochemistry at the D-2,3-diaminopropionic acid backbone supports reproducible incorporation into downstream specialty chemical production, including chiral building block manufacturing for peptide analogs and peptidomimetic libraries. The aromatic DNP fragment can also facilitate intermediate verification and batch release analytics through UV-visible detection, supporting practical quality-by-design approaches in fine chemical synthesis. The compound therefore functions as a manufacturable, stereochemically controlled amino acid derivative for scalable peptide-building and downstream synthetic routes.
5. Peptidomimetics And SAR Studies
N-α-Fmoc-N-β-2,4-dinitrophenyl-D-2,3-diaminopropionic acid is employed in peptidomimetic construction and structure-activity relationship studies where diamino-containing stereodefined residues are incorporated to tune binding and conformational behavior. The Fmoc-protected α-amine supports sequential assembly into peptide analogs, and the masked β-amino group enables controlled unveiling or conversion into additional functional motifs after scaffold assembly. The D-2,3-diaminopropionic acid stereocenter arrangement can be used to modulate backbone orientation and side-chain presentation, supporting systematic SAR exploration of stereochemical effects on molecular recognition. The DNP protecting group provides a stable, chromophoric handle during library synthesis, enabling reliable intermediate tracking and consistent downstream derivatization. The compound thereby supports medicinal chemistry-adjacent scaffold generation and amino acid chemistry-driven SAR workflows through stereocontrolled peptide analog building blocks.
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