N-α-Boc-N-δ-Z-L-ornithine N-carboxyanhydride is an amino acid N-carboxyanhydride derived from L-ornithine, featuring a side chain with an additional methylene-terminated primary amine characteristic of the ornithine class. The molecule bears an N-α tert-butoxycarbonyl (Boc) protecting group and an N-δ benzyloxycarbonyl (Z, Cbz) protecting group, and it contains the cyclic carboxyanhydride functionality that can undergo ring-opening polymerization chemistry to generate peptide-like amide linkages. Employed as a peptide-synthesis intermediate in solution-phase or polymerization-based assembly strategies, it provides a protected ornithine building block for preparing ornithine-containing peptides and related amino acid derivatives while maintaining chemoselectivity of the protected amino functionalities.
CAT No: CP08713
N-α-Boc-N-δ-Z-L-ornithine N-carboxyanhydride is a chiral, protected amino acid N-carboxyanhydride derived from L-ornithine, bearing an N-terminal Boc group and a δ-side-chain Z (benzyloxycarbonyl) protecting group on the ε-amine equivalent. The activated carboxyanhydride functionality enables controlled ring-opening chemistry to generate peptide bonds under carboxyanhydride-based coupling conditions, while the Boc and Z groups provide orthogonal protection for sequential deprotection and selective functionalization. The molecule's stereochemistry is inherited from L-ornithine, placing the reactive center within a defined chiral framework that supports stereochemically consistent peptide chain extension. The presence of protected amine and carbamate/urethane motifs also makes the compound a practical intermediate for downstream derivatization, including conversion to protected ornithine residues suitable for peptide synthesis and amino acid modification workflows.
1. Peptide Synthesis
N-α-Boc-N-δ-Z-L-ornithine N-carboxyanhydride is used in peptide synthesis workflows that rely on N-carboxyanhydride chemistry for building protected amino acid residues. The carboxyanhydride activation facilitates nucleophile-triggered ring opening to form amide linkages, while the Boc and Z protecting groups maintain orthogonality for later N-terminus and side-chain deprotection. The protected ornithine side-chain amine equivalent supports incorporation of an arginine-like cationic handle into peptide sequences, enabling subsequent functional elaboration without premature cross-reactivity. The resulting protected ornithine-containing intermediates can be carried forward into peptide analog construction and iterative chain assembly in synthetic organic chemistry and peptide science.
2. Side-Chain Functionalization
N-α-Boc-N-δ-Z-L-ornithine N-carboxyanhydride serves as a chiral platform for side-chain functionalization strategies where the δ-amino functionality must be protected during coupling yet later unmasked. The Z group on the δ-position (carbobenzyloxy protection) and the Boc group on the α-amino position provide chemically distinct protecting-group handles, supporting stepwise deprotection and selective transformation of the ornithine-derived amine. The resulting free amine after orthogonal removal can be used to generate urea, amide, sulfonamide, or other nitrogen-containing derivatives that are common in peptidomimetic scaffolds and biochemical probe synthesis. Downstream conversion of the side-chain functionality enables generation of cationic, conjugatable, or receptor-binding motifs while preserving the chiral backbone introduced by the L-ornithine stereocenter.
3. Chemical Biology Probes
N-α-Boc-N-δ-Z-L-ornithine N-carboxyanhydride is applied in chemical biology research to construct protected amino acid segments that can be converted into labeled or affinity-tagged biomolecule-binding motifs. The ornithine-derived side-chain amine provides a reactive nitrogen for later conjugation to electrophiles such as activated esters, isothiocyanates, aldehydes, or carbonyl-activating reagents, enabling formation of stable linkages after protecting-group removal. The carboxyanhydride activation supports incorporation into peptide constructs used as probes for studying molecular recognition, protein-ligand interactions, or binding-site mapping where controlled placement of cationic residues matters. The protected, stereodefined intermediate nature of the N-carboxyanhydride also supports consistent synthesis of probe libraries for structure-activity relationship studies and molecular interaction characterization.
4. Peptidomimetics And SAR Studies
N-α-Boc-N-δ-Z-L-ornithine N-carboxyanhydride is suitable for peptidomimetic construction and SAR studies that require ornithine-like residues embedded in defined stereochemical contexts. The protected α-amino and δ-side-chain amine equivalents allow systematic variation of side-chain chemistry after peptide assembly, supporting generation of analog series with altered charge density, hydrogen-bonding patterns, or steric profiles. The N-carboxyanhydride functionality enables efficient incorporation into peptide backbones, while Boc/Z protection strategies help maintain sequence fidelity during multi-step synthesis. Downstream derivatization of the unmasked amine can produce analogs used to probe structure-function relationships in receptor-binding domains, enzyme recognition motifs, and biomolecular interface models.
5. Pharmaceutical Intermediate Preparation
N-α-Boc-N-δ-Z-L-ornithine N-carboxyanhydride is used as a manufacturing-relevant intermediate for producing protected ornithine building blocks and peptide fragments that may feed into pharmaceutical intermediate supply chains. The orthogonal Boc and Z protecting groups support controlled deprotection sequences that align with process chemistry requirements for selective transformations and reduced side reactions. The chiral, activated N-carboxyanhydride form can be employed to generate protected amide-linked intermediates that are compatible with downstream purification and conversion into final protected peptide components. The compound's structure-function relationship, combining stereodefined amino acid chemistry with protected nitrogen reactivity, supports its role in fine chemical synthesis and industrial preparation of amino acid-derived intermediates for complex molecule construction.
6. Industrial Chemical Synthesis
N-α-Boc-N-δ-Z-L-ornithine N-carboxyanhydride can be applied in industrial chemical synthesis where carboxyanhydride-based peptide coupling chemistry is used to manufacture protected amino acid derivatives at scale. The molecule's protected carbamate motifs (Boc and Z) provide stability during handling and enable predictable deprotection logic in multistep manufacturing routes. The reactive carboxyanhydride group participates in amide bond formation with nucleophiles, supporting generation of protected peptide fragments or amino acid extension units that can be further processed into specialty chemical intermediates. The resulting downstream derivatives, retaining the L-ornithine stereochemical information and the protected side-chain functionality for later conversion, align with applied amino acid chemistry and industrial intermediate preparation practices.
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