3-(3-Pyrrolyl)-D-alanine is a non-proteinogenic, D-configured amino acid derivative featuring an amino acid backbone bearing a side chain substituted with a pyrrolyl ring at the 3-position. The molecule contains both an amino group and a carboxyl group, with the heteroaromatic pyrrolyl side chain providing a nitrogen-containing aromatic functionality that can participate in hydrogen bonding and π-stacking interactions in chemical and biomolecular contexts. As a structurally modified amino acid, it is used as a building block for peptide and peptidomimetic synthesis and for structure-activity or chemical biology studies where incorporation of a pyrrolyl-bearing residue enables tuning of binding properties, labeling, or material surface interactions.
CAT No: CP23402
3-(3-Pyrrolyl)-D-alanine is a D-amino acid bearing a substituted pyrrolyl side chain, providing a heteroaromatic motif that is frequently leveraged in medicinal chemistry and chemical biology for structure-activity relationship work. Its stereodefined amino acid backbone makes it a useful building block when researchers need stereochemical control alongside a polar, π-electron-rich side chain for binding studies, peptide analog design, or heteroaromatic pharmacophore incorporation. In practice, this compound is handled as a synthetic amino acid building block for downstream derivatization and incorporation into larger molecules.
1. Peptidomimetic Building Block
3-(3-Pyrrolyl)-D-alanine is used by medicinal chemistry groups to construct peptidomimetic scaffolds and stereodefined analogs where a heteroaromatic side chain is required to probe binding interactions. The pyrrolyl group offers a convenient aromatic pharmacophore element, while the D-configuration supports the design of conformationally and stereochemically controlled peptide-like structures. Researchers commonly incorporate this amino acid into custom peptide analogs and library members to evaluate structure-activity relationships, optimize physicochemical properties, and generate well-defined intermediates for further functionalization.
2. Heteroaromatic SAR Intermediates
3-(3-Pyrrolyl)-D-alanine serves as a practical intermediate for preparing heteroaromatic amino acid derivatives used in SAR campaigns. Chemical development teams often use it to introduce a pyrrolyl-containing stereogenic amino acid fragment into larger synthetic targets, including small-molecule ligands and constrained amino acid analogs. The side-chain heteroaromatic functionality supports downstream coupling, protection/deprotection workflows, and derivatization strategies that maintain the integrity of the D-amino acid stereocenter while enabling rapid exploration of analog series.
3. Chemical Biology Probe Precursors
3-(3-Pyrrolyl)-D-alanine is also applied as a starting building block for chemical biology probe and tag development where a heteroaromatic motif is used for noncovalent recognition, labeling strategies, or as a structural handle for subsequent conjugation. Researchers in chemical biology and biomolecular engineering frequently select D-amino acid building blocks to control stereochemistry in probe design and to generate defined analogs for studying interactions with enzymes, receptors, or binding partners. The pyrrolyl side chain provides a chemically stable aromatic platform that can be carried through probe synthesis and then functionalized to match the requirements of the intended assay workflow.
4. Analytical Reference Material Development
3-(3-Pyrrolyl)-D-alanine is used in analytical method development as a defined amino acid reference for characterization of synthetic intermediates and final products containing the pyrrolyl-D-alanine motif. Analytical chemists and process development teams rely on stereodefined amino acid standards to confirm identity and support method qualification for workflows such as LC-based separation and compositional verification of complex mixtures. In these settings, the compound's well-defined structure helps reduce ambiguity when monitoring incorporation of the heteroaromatic amino acid fragment across multi-step synthesis and purification.
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