N-α-Fmoc-N-β-allyloxycarbonyl-D-2,3-diaminopropionic acid is a protected D-2,3-diaminopropionic acid derivative bearing two orthogonal amino protecting groups, classifying it as a diamino acid building block for peptide-related synthesis. The molecule contains an Fmoc group on the α-amino function and an allyloxycarbonyl (Alloc) group on the β-amino function, while the carboxyl group remains available as the acid functionality for coupling and the side chain features an additional amino substituent masked as Alloc. In solid-phase or solution-phase peptide synthesis and related chemical biology workflows, this orthogonally protected diamino acid enables stepwise chemoselective deprotection and incorporation of a diamino motif into peptides, probes, or other amino acid derivatives where controlled access to the two nitrogen sites is required.
CAT No: CP05829
N-α-Fmoc-N-β-allyloxycarbonyl-D-2,3-diaminopropionic acid is an Fmoc-protected, D-configured amino acid derivative featuring two amino-bearing positions within a 2,3-diaminopropionic acid framework. The α-amino group is protected as an Fmoc carbamate, while the β-amino group is masked as an allyloxycarbonyl (Alloc) carbamate, providing orthogonal protection for sequential deprotection. The molecule also contains a carboxylic acid functionality suitable for peptide coupling after activation, with stereochemical definition at the D-2,3-diaminopropionic backbone influencing conformational preferences during assembly. The combination of carbamate-protected amines and an allyl handle enables controlled orthogonal deprotection strategies that are compatible with peptide synthesis workflows and downstream derivatization of the diamino motif.
1. Peptide Synthesis
N-α-Fmoc-N-β-allyloxycarbonyl-D-2,3-diaminopropionic acid serves as a protected diamino acid building block for stepwise peptide assembly in solid-phase peptide synthesis and related protected-amino-acid strategies. The Fmoc group supports standard base-labile N-terminal unmasking to generate a reactive α-amino site for coupling, while the Alloc-protected β-amine remains masked to preserve chemoselectivity during chain elongation. The free carboxylic acid participates in amide bond formation after activation, allowing incorporation of the D-2,3-diaminopropionic unit into peptide backbones or side-chain functionalized sequences. Orthogonal deprotection of the Alloc group can be applied to reveal the second amine for subsequent coupling, branching, or post-assembly conjugation, supporting construction of diamino-rich peptide motifs relevant to peptide science and synthetic methodology.
2. Side-Chain Functionalization
N-α-Fmoc-N-β-allyloxycarbonyl-D-2,3-diaminopropionic acid functions as a controlled precursor for side-chain functionalization strategies that require two orthogonally addressable nitrogen atoms. The β-allyloxycarbonyl (Alloc) carbamate provides an allyl-protected amine that can be selectively removed under conditions compatible with the Fmoc-protected α-amino carbamate when orthogonal deprotection is planned. The exposed second amine enables downstream derivatization such as formation of additional amide links, urea/thiourea formation, sulfonamide generation, or attachment of solubilizing and recognition elements onto peptide scaffolds. The D stereochemistry embedded in the diaminopropionic backbone can influence spatial presentation of the functionalized amine, supporting structure-function investigations and enabling targeted construction of amino acid-modified intermediates used in advanced peptide and peptidomimetic designs.
3. Chemical Biology Labeling
N-α-Fmoc-N-β-allyloxycarbonyl-D-2,3-diaminopropionic acid supports chemical biology workflows that require incorporation of a protected diamino handle for later conjugation to biomolecules. The orthogonally protected amines enable sequential unmasking, allowing selective generation of a primary amine for coupling to activated esters, isothiocyanates, aldehyde-derived linkers, or other electrophilic labeling reagents following peptide assembly. The carboxylic acid and protected nitrogen atoms allow the diamino unit to be embedded into peptide probes, affinity tags, or recognition elements before deprotection and conjugation steps. The resulting labeled constructs can be used as research intermediates for studying molecular recognition, mapping binding interfaces, and generating defined chemical probes where the D-2,3-diaminopropionic geometry contributes to reproducible spatial arrangement of the reactive amine.
4. Peptidomimetics And SAR Studies
N-α-Fmoc-N-β-allyloxycarbonyl-D-2,3-diaminopropionic acid is suitable for peptidomimetic construction and structure-activity relationship studies where diamino acid incorporation modulates charge distribution and hydrogen-bonding patterns. The protected diamine motif allows controlled introduction of two nitrogen atoms into a scaffold while maintaining synthetic compatibility during assembly, with Fmoc enabling N-terminal peptide coupling and Alloc enabling later exposure of the second amine. The D configuration can be leveraged to tune backbone stereochemistry and side-chain orientation, supporting systematic SAR efforts that compare positional isomers or stereochemical variants. Downstream derivatization of the revealed β-amine supports conversion into constrained linkers, charged substituents, or additional functional groups used to generate analog libraries for medicinal chemistry research and scaffold optimization.
5. Pharmaceutical Manufacturing Intermediates
N-α-Fmoc-N-β-allyloxycarbonyl-D-2,3-diaminopropionic acid can be used as a defined protected amino acid intermediate in manufacturing-oriented peptide synthesis supply chains. The Fmoc/Alloc orthogonal protection scheme is compatible with controlled deprotection sequences, supporting production of peptide intermediates that require selective unveiling of one amine site while maintaining protection on the other during upstream processing. The carboxylic acid functionality enables standardized peptide coupling chemistry to build amide-linked intermediates used in downstream drug substance or drug product manufacturing routes for peptide-based molecules. The stereochemically defined D-2,3-diaminopropionic backbone supports reproducible incorporation into final sequences, aligning with industrial needs for consistent building block identity and predictable transformation behavior in protected amino acid chemistry.
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