H-Tyr-betaNA

H-Tyr-betaNA is a tyrosine-derived amino acid derivative in which the phenolic side chain of L-tyrosine is retained while the α-amino acid functionality is presented in an N-terminal free form (H-) and the carboxyl terminus is converted to a β-amide motif associated with a beta-nitrogen-containing acyl component (betaNA). The molecule therefore combines a stereochemically defined amino acid backbone with a phenolic hydroxyl group that can participate in electrophilic aromatic substitution, oxidation state adjustments, and selective protection/deprotection strategies. The N-terminus and amide carbonyl enable peptide-coupling chemistry and downstream conversion into amide-linked intermediates, including C-terminal functionalization routes that preserve the tyrosine side chain. The presence of a phenol-bearing aromatic ring and an amide-containing polar framework makes H-Tyr-betaNA suitable for incorporation into peptide-like scaffolds and for transformation into chemically addressable derivatives used in biochemical and synthetic organic workflows.

1. Peptide Coupling Chemistry

H-Tyr-betaNA is applied in peptide synthesis workflows where a tyrosine-based building block is required with a defined aromatic side chain for subsequent functionalization. H-Tyr-betaNA features a free N-terminus (H-) and an amide-containing carbonyl region that can be activated for coupling to protected amino acids or to resin-bound fragments using standard peptide coupling strategies. The tyrosine phenolic hydroxyl allows orthogonal protection planning, enabling selective side-chain modification after backbone assembly while maintaining compatibility with N-protection and C-terminal activation. The resulting peptide-linked products and peptide analog intermediates can be used for library construction, sequence optimization, and method development in peptide chemistry and peptidomimetic synthesis.

2. Side-Chain Functionalization

H-Tyr-betaNA is used in side-chain functionalization programs that exploit the tyrosine phenolic hydroxyl for controlled derivatization. The aromatic phenol can be protected during backbone assembly and later converted into activated handles for conjugation, affinity tags, or further synthetic elaboration, while the β-amide motif supports stable intermediate handling during multi-step sequences. The N- and C-functional groups provide chemically addressable sites for forming additional amide linkages or for generating downstream derivatives that retain the stereochemical identity of the amino acid backbone. Molecular products derived from H-Tyr-betaNA can serve as intermediates for chemical biology probes, peptide-based reagents, and structure-guided scaffold modifications.

3. Chemical Biology Probes

H-Tyr-betaNA is suitable for chemical biology research requiring tyrosine-containing amino acid derivatives that can be incorporated into probe constructs. The combination of an aromatic phenol and an amide-linked backbone supports conjugation chemistry and enables the preparation of peptide-like reagents for studying binding interactions, substrate recognition, or molecular recognition motifs. The free N-terminus and the β-amide feature can be used to generate defined coupling points for attaching labels, linkers, or capture groups while maintaining the tyrosine side chain as a functional recognition element. Downstream derivatives prepared from H-Tyr-betaNA can be employed as biochemical research intermediates for assay development, target engagement studies in vitro, and reagent generation for mechanistic experiments.

4. Peptidomimetic Building Blocks

H-Tyr-betaNA is applied in peptidomimetic construction where tyrosine-derived stereochemical elements and amide connectivity are required to build constrained or modified backbone analogs. The amide-containing βNA region supports formation of additional carbonyl-containing linkages that can influence conformational preferences and hydrogen-bonding patterns in peptide-like structures. The phenolic hydroxyl provides a handle for tuning polarity and reactivity, including conversion to protected forms during synthesis and later transformation into functional substituents that modulate molecular recognition. The resulting peptidomimetic intermediates and analogs can be used in structure-activity relationship studies, fragment-to-lead optimization, and synthetic methodology development for amino acid-derived scaffolds.

5. Process Chemistry Intermediate

H-Tyr-betaNA is used as a process chemistry intermediate for manufacturing routes that require a tyrosine-based amino acid derivative with controlled functional-group presentation. The stable amide linkage and the phenolic side chain enable route design in which orthogonal protection and selective activation steps can be sequenced to minimize side reactions during scale-up. The N-terminal free functionality supports conversion into activated derivatives for coupling steps, while the aromatic phenol can be managed through protection/deprotection logic to ensure reproducible downstream transformations. H-Tyr-betaNA-derived intermediates can therefore feed into fine chemical synthesis of peptide building blocks, peptide analogs, and chemically defined research reagents used across industrial and applied laboratory settings.

1. Emu oil in combination with other active ingredients for treating skin imperfections

2. High fat diet and GLP-1 drugs induce pancreatic injury in mice

3. Crystal Structure of BamB from Pseudomonas aeruginosa and Functional Evaluation of Its Conserved Structural Features

4. The spatiotemporal control of signalling and trafficking of the GLP-1R

5. Cell-based adhesion assays for isolation of snake venom’s integrin antagonists