N-α-Fmoc-N-β-Z-D-2,3-diaminopropionic acid is a protected, non-proteinogenic diamino acid derivative featuring a 2,3-diaminopropionic acid backbone with orthogonally protected amino groups: the α-amino group is capped with an Fmoc group and the β-amino group is protected as a Z (benzyloxycarbonyl/Cbz-type) carbamate. The molecule contains both an unprotected carboxyl functional group and two distinct nitrogen substituents bearing Fmoc and Z protecting groups, and it is specified as the D stereochemical form at the chiral center(s) implied by the D designation. In peptide and amino acid chemistry workflows, this orthogonally protected diamino acid is used as a building block for stepwise incorporation into peptide-like structures and for preparing defined diamino acid-containing intermediates that require controlled chemoselectivity during sequential coupling and deprotection steps.
CAT No: CP05841
N-α-Fmoc-N-β-Z-D-2,3-diaminopropionic acid is a chiral, diamino-functional amino acid building block featuring two stereochemically relevant nitrogen substituents and a D-configuration at the amino acid carbon framework. The α-amino group is protected as an Fmoc carbamate, while the β-amino group is masked as a benzyloxycarbonyl (Z) carbamate, enabling orthogonal deprotection logic during peptide assembly and subsequent functionalization. The molecule also contains a free carboxylic acid that can be activated for peptide coupling, while the protected side-chain nitrogens remain chemically stable under standard coupling conditions. The combination of Fmoc and Z protecting groups supports controlled exposure of each amine in sequence, making the compound suitable for constructing diamino-containing peptide motifs and for preparing downstream intermediates in amino acid derivatization and chiral synthesis.
1. Peptide Synthesis
N-α-Fmoc-N-β-Z-D-2,3-diaminopropionic acid is used in peptide synthesis workflows that require incorporation of a diamino acid unit with orthogonally protected nitrogens. The Fmoc-protected α-amine supports stepwise solid-phase or solution-phase peptide elongation via standard amide bond formation from the carboxylic acid, while the Z-protected β-amine remains inert during coupling cycles. Sequential deprotection strategies can reveal the α-amine for chain growth and later expose the β-amine for intramolecular or intermolecular reactions that install additional peptide side-chain functionality. The resulting diamino-containing peptide analogs can serve as substrates for biochemical studies, as scaffolds for peptidomimetic design, and as intermediates for further N-functionalization.
2. Side-Chain Functionalization
N-α-Fmoc-N-β-Z-D-2,3-diaminopropionic acid is applied to side-chain functionalization chemistry where a protected β-amine must be introduced without interfering with peptide coupling. The Z-carbamate on the β-nitrogen provides a stable handle that can be selectively deprotected after the peptide backbone is assembled, enabling formation of additional amide, urea, sulfonamide, or alkylated derivatives from the exposed diamine. The presence of a free carboxylic acid allows conversion into activated esters or coupling-ready derivatives when the compound is used as a chiral intermediate rather than only as a residue. Downstream products include functionalized amino acid derivatives and peptide conjugates that incorporate diamino motifs for tuning charge density and molecular recognition.
3. Unnatural Amino Acid Incorporation
N-α-Fmoc-N-β-Z-D-2,3-diaminopropionic acid is suitable for unnatural amino acid incorporation into peptides and peptidomimetics, leveraging its D-stereochemistry and dual protected amines to control backbone and side-chain presentation. The defined stereocenter and the two nitrogen functionalities enable construction of constrained or cationic peptide segments that can alter conformational preferences and interaction patterns in structure-activity relationship studies. Fmoc chemistry supports compatibility with protected amino acid synthesis pipelines, while the orthogonal Z protection enables later diversification of the β-amine without disrupting the assembled peptide. The compound can be employed to generate libraries of diamino-containing analogs for SAR exploration, molecular design, and chemical biology probes.
4. Bioconjugation Chemistry
N-α-Fmoc-N-β-Z-D-2,3-diaminopropionic acid is used in bioconjugation and chemical biology settings where controlled amine availability is required for coupling to biomolecule-reactive moieties. The orthogonally protected α- and β-amines allow staged introduction of reactive nitrogen sites, supporting conjugation strategies that depend on selective exposure of one amine at a time. The carboxylic acid functionality enables preparation of peptide-linker constructs that can be further transformed into biomolecule-binding or detection-ready conjugates after deprotection. Diamino-containing conjugates derived from this building block can be used to probe binding interfaces, map spatial proximity in biomolecular systems, and generate defined labeling reagents for analytical and research workflows.
5. Pharmaceutical Intermediate Preparation
N-α-Fmoc-N-β-Z-D-2,3-diaminopropionic acid is applied in pharmaceutical intermediate preparation and process chemistry as a chiral, protected diamino acid precursor for downstream synthesis of nitrogen-rich intermediates. The Fmoc and Z carbamates provide robust protection during activation and coupling steps, supporting manufacturing-compatible handling and controlled deprotection sequences when building larger fragments. The free carboxylic acid enables conversion into activated forms used to assemble amide-containing intermediates, while the protected β-amine can be unmasked to introduce additional nitrogen functionality into drug-like scaffolds. The compound's stereochemical definition and orthogonal protection pattern support preparation of intermediates used in fine chemical synthesis and specialty chemical production where diamino motifs and sequential functionalization are required.
6. Analytical Research Standards
N-α-Fmoc-N-β-Z-D-2,3-diaminopropionic acid is employed in analytical research as a reference building block for method development involving amino acid derivatives, protected amino acids, and peptide fragments containing diamino residues. The presence of two distinct carbamate protecting groups yields characteristic chemical signatures that can support LC-MS or chromatographic identification of protected intermediates and deprotection progress during synthetic sequences. The D-configuration and defined protecting-group pattern enable preparation of labeled or structurally matched standards used to validate quantitation and structural assignments for diamino-containing peptide analogs. Analytical workflows benefit from the compound's compatibility with peptide coupling chemistry and its role as a reproducible chiral intermediate in amino acid derivatization studies.
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