D-6-Hydroxynorleucine is a D-configured, non-proteinogenic amino acid featuring a straight-chain norleucine backbone bearing a hydroxyl substituent at the 6-position, classifying it as a hydroxy-substituted aliphatic amino acid. The molecule contains a free amino group and a carboxyl functional group, with the side-chain hydroxyl providing hydrogen-bonding and polarity that can influence conformational preferences and intermolecular interactions in peptide contexts. D-6-Hydroxynorleucine is used in peptide synthesis and structure-activity or structure-property studies to introduce a hydroxyl-bearing aliphatic residue for controlled side-chain functionality, as well as in chemical biology and analytical method development requiring an amino acid with a defined D-stereochemical form and reactive alcohol handle.
CAT No: CP07303
D-6-Hydroxynorleucine is a D-configured, non-proteinogenic amino acid featuring a six-carbon side chain terminating in a primary alcohol at the 6-position, paired with a stereogenic alpha carbon typical of chiral amino acid intermediates. The molecule contains an amino functionality and a carboxylic acid (or carboxylate form depending on salt/derivatization), enabling standard peptide coupling chemistry while providing a hydroxyl handle for selective side-chain transformations. The D-stereochemistry supports stereochemically defined incorporation into peptide sequences and into chiral building blocks used for structure-controlled synthesis. The side-chain primary alcohol can be protected, activated, or converted into electrophiles or leaving groups, making D-6-hydroxynorleucine a practical intermediate for amino acid derivatization and downstream functional molecule construction.
1. Peptide Synthesis
D-6-Hydroxynorleucine is applied in peptide synthesis as a D-amino acid building block for generating stereochemically defined analogs and peptide fragments. The amino acid backbone supports amide bond formation via standard coupling strategies, while the side-chain primary alcohol at C6 can be protected to prevent competing reactions during N-protection and peptide assembly. Incorporation of the D-configuration can be used to tune conformational preferences and proteolytic stability of peptide constructs used in biochemical research and peptide material studies. Side-chain-protected variants derived from D-6-Hydroxynorleucine can be carried through iterative coupling cycles and later deprotected to reveal a reactive hydroxyl for post-assembly diversification.
2. Amino Acid Side-Chain Functionalization
D-6-Hydroxynorleucine serves as a direct precursor for side-chain functionalization workflows targeting hydroxyl-to-derivative conversion chemistry. The terminal primary alcohol can be transformed into esters, ethers, carbonate-protected forms, or activated intermediates suitable for nucleophilic substitution, enabling installation of functional groups that modulate solubility, polarity, or binding interactions in peptidomimetics. The chiral alpha center preserves stereochemical information during derivatization, supporting consistent structure-property studies across analog series. Downstream products prepared from D-6-hydroxynorleucine can be used to generate C6-functional amino acid derivatives for fine chemical synthesis and for constructing libraries of amino acid-based intermediates.
3. Chemical Biology And Probe Design
D-6-Hydroxynorleucine is utilized in chemical biology and molecular probe design where an amino acid with a modifiable primary alcohol side chain enables controlled conjugation chemistry. The backbone provides a handle for incorporation into peptides or peptide-like scaffolds, while the C6 hydroxyl can be used for attachment of linkers, affinity tags, or reporter moieties through protection/deprotection and selective activation steps. D-stereochemistry can be leveraged to produce stereochemically defined probes that resist enzymatic degradation pathways, supporting longer-lived labeling reagents in experimental workflows. The resulting D-6-hydroxynorleucine-derived conjugates function as research tools for studying biomolecular interactions and for mapping functional regions in peptide-templated systems.
4. Peptidomimetics for SAR Studies
D-6-Hydroxynorleucine is applied to peptidomimetic construction for structure-activity relationship studies requiring controlled stereochemistry and side-chain functionality. The non-natural D-amino acid framework supports systematic variation of spatial arrangement relative to other residues, while the primary alcohol at the 6-position enables a spectrum of chemical modifications that can be correlated with binding or recognition outcomes in screening campaigns. Protection-group strategies for the hydroxyl and the amino acid functionality facilitate parallel synthesis of analogs and ensure compatibility with peptide coupling conditions. D-6-Hydroxynorleucine-derived analogs can be used to generate SAR-focused series that feed fragment-based design, molecular modeling validation, and iterative medicinal chemistry refinement.
5. Process Chemistry Intermediate
D-6-Hydroxynorleucine is suitable for process chemistry intermediate preparation where chiral amino acid derivatives with a primary alcohol side chain support scalable downstream transformations. The presence of a stereogenic center and a functionalizable hydroxyl group enables conversion into protected amino acid derivatives, activated intermediates, or ester/ether forms that can be carried through manufacturing sequences with predictable chemoselectivity. The compound's amino acid functionality supports conversion into coupling-ready derivatives, aligning with industrial workflows that require consistent handling of N- and C-functional groups. D-6-Hydroxynorleucine can therefore be employed as a chiral intermediate for specialty chemical production, including the manufacture of functional amino acid derivatives used in peptide-based materials and research reagent supply chains.
6. Analytical Research Standards
D-6-Hydroxynorleucine is used in analytical research as a chiral reference material and derivatization substrate for amino acid profiling and method development. The D-configuration and the terminal primary alcohol provide a distinct chemical signature that can be exploited for chromatographic separation, mass spectrometric characterization, and calibration of stereospecific analytical workflows. The hydroxyl group enables derivatization strategies that improve detectability or chromatographic behavior, while the amino acid backbone supports incorporation into derivatized standards for peptide hydrolysate analysis. D-6-Hydroxynorleucine-derived standards and derivatives can support quality control of peptide synthesis intermediates and characterization of amino acid incorporation in research-grade peptide constructs.
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