Bz-Tyr-betaNA

Bz-Tyr-betaNA is an N-protected tyrosine-derived amino acid derivative in which the tyrosyl side chain bears a β-amino functionality (betaNA) while the α-amino group is protected as a benzyl (Bz) carbamate/amide-type protecting group, enabling controlled peptide coupling chemistry. The molecule contains a phenolic hydroxyl on the aromatic ring, a stereogenic center at the amino acid backbone, and a secondary amine within the β-amino substituent that can participate in salt formation and selective derivatization. The benzyl-protecting group and the phenolic hydroxyl provide orthogonal handles for protection/deprotection strategies during multi-step synthesis, while the amino acid framework supports amide bond formation under standard peptide chemistry conditions. As a chiral amino acid intermediate and peptide building block precursor, Bz-Tyr-betaNA can be used to introduce β-amino-tyrosine motifs into peptides and peptidomimetics, supporting downstream functionalization and analytical standard preparation.

1. Peptide Synthesis

Bz-Tyr-betaNA is applied in peptide synthesis workflows where a β-amino-tyrosine residue is required to modulate backbone geometry and introduce a side-chain/β-position nucleophile for subsequent derivatization. The protected N-terminus (Bz) supports chemoselective coupling to activated carboxylic acid partners, while the phenolic hydroxyl can be managed through temporary protection or selective reactivity control to avoid side reactions. The β-amino substituent can be retained for later intramolecular cyclization, further acylation, or conjugation steps after assembly of the peptide chain. Incorporation of this chiral amino acid derivative into linear or branched peptide sequences enables construction of β-amino-containing analogs used for method development and structure-focused peptide library synthesis in synthetic organic chemistry.

2. Peptidomimetics And SAR Studies

Bz-Tyr-betaNA is used in peptidomimetic and structure-activity relationship studies where β-amino-tyrosine motifs can be installed to probe how altered hydrogen-bonding patterns and basicity influence molecular recognition. The stereogenic amino acid backbone and the aromatic phenol provide defined spatial features for aromatic interactions and polar contacts, while the β-amino group enables tuning of charge state and derivatization to generate analog series. N-protection with the benzyl group supports iterative assembly of constrained or functionalized analogs, and the phenolic hydroxyl serves as a convenient functional handle for etherification or acylation strategies that affect lipophilicity and binding profiles. Downstream, Bz-Tyr-betaNA-derived peptide mimetics can be converted into diversified fragments for SAR studies, fragment-based screening follow-ups, and mechanistic investigations of receptor or enzyme binding models.

3. Chemical Biology Labeling

Bz-Tyr-betaNA is suitable for chemical biology labeling strategies where the β-amino group and phenolic hydroxyl enable orthogonal conjugation chemistries to biomolecule scaffolds. The amino acid framework supports incorporation into peptides or peptide-like probes, after which selective functional group transformations can introduce linkers, affinity tags, or reporter moieties at the β-position. The benzyl-protected amino functionality helps maintain coupling fidelity during probe synthesis, while the phenolic hydroxyl can be leveraged for controlled derivatization to generate stable conjugates with tunable reactivity. Bz-Tyr-betaNA can therefore serve as a chiral intermediate for preparing labeled peptide probes and conjugation-ready building blocks used in biochemical research and molecular recognition assays.

4. Side-Chain Functionalization

Bz-Tyr-betaNA is employed for side-chain functionalization and amino acid derivatization programs that require a β-amino nucleophile alongside a phenolic handle. The β-amino substituent can be converted into amide, urea, sulfonamide, or carbamate derivatives to introduce new binding motifs or to create protected intermediates for later deprotection, while the phenolic hydroxyl can be selectively protected or transformed to modulate polarity and stability. The chiral center at the amino acid backbone supports stereochemically defined products that are important for reproducible structure-function studies and for generating stereopure intermediates in fine chemical synthesis. Downstream utility includes preparation of functional amino acid derivatives, coupling-ready intermediates, and diversified chemical entities for library synthesis and process-oriented route development.

5. Pharmaceutical Intermediate Preparation

Bz-Tyr-betaNA is used as a chiral amino acid intermediate in pharmaceutical manufacturing-oriented synthesis planning where β-amino-tyrosine fragments may be incorporated into peptidic or peptidomimetic intermediates. The protected N-functionality (Bz) is compatible with stepwise peptide coupling logic, enabling controlled introduction of the residue into larger scaffolds while maintaining chemoselectivity across multiple functional groups. The phenolic hydroxyl and β-amino group provide defined points for orthogonal protection/deprotection and for conversion into downstream protected derivatives suited to solid-phase or solution-phase assembly strategies. Bz-Tyr-betaNA-derived intermediates can be further processed into drug-like building blocks, analytical reference materials, and manufacturing-grade synthetic precursors used in specialty chemical production and industrial chemical manufacturing of amino acid-based entities.

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