Boc-D-3-Aminobutyric acid is a protected amino acid derivative in which the amino group of D-3-aminobutyric acid is protected as a tert-butoxycarbonyl (Boc) carbamate, featuring a four-carbon backbone with a primary amino substituent at the 3-position and a free carboxylic acid group. The molecule bears an unprotected carboxyl functional group for salt formation or coupling chemistry, while the Boc-protected amine controls chemoselectivity by suppressing side reactions during peptide building and other stepwise derivatizations; the D stereochemical designation is retained in the chiral center of the amino acid. In synthesis and chemical biology workflows, this protected analogue is used as a precursor for incorporating the 3-aminobutyric acid residue into peptides and peptide-related intermediates, including contexts where stepwise protection and deprotection strategies are required to manage reactivity.
CAT No: CP03007
Boc-D-3-Aminobutyric acid is a D-configured amino acid building block protected at the alpha-amino group with a Boc (tert-butoxycarbonyl) group. Its side chain is a short, aliphatic three-carbon chain terminating in a primary amine, which makes it a useful scaffold for introducing a functionalized amino handle into peptide segments and protected intermediate sequences. As a Boc-protected amino acid, it is commonly handled as a synthetic intermediate for controlled assembly of amino acid derivatives and for downstream transformations where the terminal amine can be selectively protected or further functionalized.
1. Side-Chain Functional Peptides
Boc-D-3-Aminobutyric acid is used in peptide synthesis workflows where incorporation of a D-configured residue with an additional side-chain primary amine is required for subsequent derivatization. Researchers developing peptide libraries or modified peptide segments often select this building block to introduce a protected amino acid unit that can later be converted into amide, urea, carbamate, or other nitrogen-containing linkages at the side chain position. The Boc protection on the alpha-amino group supports stepwise peptide assembly strategies, while the pendant primary amine provides a chemically distinct site for orthogonal protection and later conjugation steps within peptide construction.
2. Peptide Linker and Conjugation Handles
Boc-D-3-Aminobutyric acid is frequently chosen as a precursor for building peptide-based linkers and conjugation-ready intermediates, especially when a terminal amine is needed for coupling to activated carboxylic acids, activated esters, or electrophilic bioconjugation reagents. Chemical biology teams and peptide development groups use this residue to position an additional nitrogen functionality away from the backbone, enabling attachment of tags, solubilizing groups, or affinity handles while maintaining the stereochemical integrity of the D-amino acid segment. In downstream workflows, the side-chain amine is typically protected or transformed to match the coupling chemistry used for the final conjugate, making this reagent valuable for modular construction of functional peptide conjugates.
3. D-Amino Acid Stereocontrolled Scaffolds
Boc-D-3-Aminobutyric acid supports stereocontrolled synthesis of D-amino acid-containing peptide scaffolds used in structure-property studies and peptide optimization campaigns. Medicinal chemistry and peptide engineering groups incorporate D-configured residues to control conformational preferences and to create defined stereochemical patterns within synthetic sequences. The presence of a side-chain primary amine allows these groups to combine stereochemical control with a programmable functional handle, facilitating the generation of analog series where both stereochemistry and side-chain derivatization are varied in a systematic manner. This makes the building block particularly useful when a D-residue must be introduced alongside a chemically addressable side-chain for later diversification.
4. Protected Intermediate for Nitrogen-Rich Derivatives
Boc-D-3-Aminobutyric acid is also used as a pharmaceutical intermediate building block for producing nitrogen-rich amino acid derivatives and protected intermediates that require a D-stereochemical center and an additional primary amine. Process development and specialty chemical teams commonly rely on this type of Boc-protected amino acid to prepare downstream compounds where the alpha-amino functionality is temporarily masked while the side-chain amine can be selectively handled through protection and conversion steps. The result is a practical starting point for manufacturing workflows that need controlled reactivity at two distinct nitrogen sites, enabling efficient access to a range of amide and amine-containing derivative classes used in research and industrial synthesis programs.
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