N-α-Boc-N-β-allyloxycarbonyl-D-2,3-diaminopropionic acid dicyclohexylamine salt is a protected, nonstandard amino acid derivative featuring a D-configured 2,3-diaminopropionic acid backbone with two orthogonally protected amino functionalities. The molecule bears an N-α Boc (tert-butoxycarbonyl) protecting group and an N-β allyloxycarbonyl (Alloc) protecting group, while the remaining carboxyl group is present as a salt with dicyclohexylamine, providing ionic stabilization and controlled handling during synthesis. This protected diamino acid is used as a stepwise building block in peptide synthesis and related amide-forming chemistry where orthogonal deprotection of Boc and Alloc enables selective exposure of one amino group for controlled coupling, as well as in the preparation of more complex amino acid and peptide derivatives for structure-function studies.
CAT No: CP05812
N-α-Boc-N-β-allyloxycarbonyl-D-2,3-diaminopropionic acid dicyclohexylamine salt is a D-configured, diamino acid derivative featuring two orthogonally protected primary amines: an N-α Boc group and an N-β allyloxycarbonyl (Alloc) group. The molecule contains a carboxylic acid functionality that can participate in peptide coupling after appropriate activation, while the two protected nitrogens enable controlled stepwise deprotection and selective functionalization. The stereochemical definition at the 2,3-diaminopropionic backbone supports reproducible chiral building-block behavior in peptide construction and structure-guided synthesis. The dicyclohexylamine salt form improves handling and can influence crystallization and downstream processing as a stable, isolable intermediate for protected amino acid chemistry.
1. Protected Diamino Peptide Synthesis
N-α-Boc-N-β-allyloxycarbonyl-D-2,3-diaminopropionic acid dicyclohexylamine salt supports protected diamino peptide building-block preparation by combining a Boc-protected α-amine with an Alloc-protected β-amine on a D-2,3-diaminopropionic scaffold. The carboxylic acid enables standard peptide coupling to form amide bonds, while the orthogonal protecting groups allow sequential deprotection to generate a controlled free amine for subsequent coupling steps or side-chain elaboration. Alloc removal can be used to expose the β-amine without disturbing the Boc group, supporting iterative synthesis of diamino-containing peptide segments and peptide analogs. The resulting protected-to-free amine conversion pattern is compatible with solid-phase or solution-phase workflows where selective N-functionalization is required for defined stereochemistry and branching control.
2. Orthogonal Deprotection Chemistry
N-α-Boc-N-β-allyloxycarbonyl-D-2,3-diaminopropionic acid dicyclohexylamine salt is suitable for orthogonal protecting-group strategies in chiral amino acid derivatization due to the coexistence of Boc and Alloc functionalities on adjacent stereogenic centers. The Boc group provides acid-labile protection of the α-amine, whereas the Alloc group can be removed under conditions that preserve other common protecting groups, enabling chemoselective access to either nitrogen. The two protected amines can therefore be used to direct stepwise formation of urea, carbamate, amide, or sulfonamide derivatives after targeted deprotection, supporting synthesis of constrained diamino motifs. The salt form can aid in reproducible handling during protection management, making the compound a practical intermediate for building stereochemically defined, multifunctional nitrogen-rich scaffolds.
3. Bioconjugation Linker Design
N-α-Boc-N-β-allyloxycarbonyl-D-2,3-diaminopropionic acid dicyclohexylamine salt can serve as a precursor for bioconjugation chemistry where controlled presentation of two amine handles is required for linker installation. The orthogonally protected nitrogens can be converted into selectively reactive primary amines, enabling downstream formation of stable amide or carbamate linkages to biomolecule scaffolds such as peptides, proteins, or nucleic-acid-associated constructs. The D-2,3-diaminopropionic stereocenter arrangement can help define linker geometry in peptide-based conjugates and may influence local conformation in constrained attachment motifs. The dicyclohexylamine salt form also aligns with industrially relevant intermediate preparation, where isolable protected amino acid salts are often used to streamline purification and reproducible conjugate manufacturing.
4. Unnatural Amino Acid Incorporation
N-α-Boc-N-β-allyloxycarbonyl-D-2,3-diaminopropionic acid dicyclohexylamine salt is applicable to unnatural amino acid incorporation workflows that require a chiral diamino building block with orthogonal N-protection. The protected α-amine and β-amine allow the compound to be introduced into peptide sequences while maintaining compatibility with peptide coupling chemistry at the carboxyl group. Selective deprotection can then generate a free β-amine for additional coupling or for attachment of functional groups that modulate charge, hydrogen-bonding, and steric properties in peptidomimetics. The stereodefined D-configuration supports consistent chiral outcomes in fragment assembly and structure-activity relationship studies focused on diamino-containing peptide analogs.
5. Pharmaceutical Intermediate Preparation
N-α-Boc-N-β-allyloxycarbonyl-D-2,3-diaminopropionic acid dicyclohexylamine salt aligns with pharmaceutical intermediate preparation where multifunctional, protected amino acid derivatives are used to construct nitrogen-rich substructures. The carboxylic acid and protected amines enable conversion into activated intermediates for amide formation and into selectively deprotected intermediates for further N-functionalization toward drug-like scaffolds. Orthogonal Boc/Alloc protection supports controlled manufacturing sequences that minimize side reactions by maintaining one nitrogen protected while transforming the other. The isolable dicyclohexylamine salt can be leveraged in process chemistry to manage material handling and to support reproducible downstream conversion into protected heteroatom-containing intermediates used in fine chemical synthesis.
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