Boc-N-Me-D-Tyr-OH · DCHA

Boc-N-Me-D-Tyr-OH · DCHA is a Boc-protected, N-methylated D-tyrosine derivative supplied as a dicyclohexylamine (DCHA) salt. The D stereochemistry and tyrosine phenolic side chain make it a useful chiral building block for preparing stereochemically defined peptide segments, while the Boc and N-methyl features support controlled amide formation and modulation of backbone hydrogen-bonding. In peptide chemistry workflows, this protected amino acid is typically selected when a tyrosine residue with reduced N-H functionality and a protected amino terminus is required for segment coupling, library synthesis, or the preparation of modified peptide intermediates.

1. Stereodefined Peptide Building

Boc-N-Me-D-Tyr-OH · DCHA is used by peptide synthesis groups to assemble peptide segments that require a D-tyrosine residue with an N-methylated amide. The combination of Boc protection and N-methylation helps enforce the intended backbone substitution pattern during coupling and subsequent elongation steps, which is particularly valuable for preparing peptides where stereochemical control and amide NH suppression are design priorities. Researchers commonly employ this reagent in custom peptide synthesis and in the preparation of stereochemically constrained analogs for structure-activity relationship (SAR) studies.

2. Peptide Library and Analog Synthesis

Boc-N-Me-D-Tyr-OH · DCHA supports medicinal chemistry and chemical biology programs that generate peptide analog panels containing modified tyrosine positions. The protected amino acid format enables consistent incorporation into multi-residue sequences, including workflows where D-amino acid content and N-methylated linkages are used to tune conformational preferences and reduce susceptibility to proteolytic cleavage in peptide-like constructs. This reagent is frequently selected for parallel synthesis campaigns where reliable segment coupling performance and defined residue identity are required for downstream purification and characterization.

3. Tyrosine-Containing Segment Coupling

Boc-N-Me-D-Tyr-OH · DCHA is applied in workflows that build tyrosine-bearing peptide intermediates for further functionalization or final assembly. The tyrosine side chain provides a phenolic handle that can be retained for later derivatization (for example, converting to protected phenol forms or enabling conjugation strategies after peptide assembly, depending on the overall protecting-group scheme). Peptide chemists use this reagent when the tyrosine residue must be introduced as a D-configured, N-methylated unit while maintaining a Boc-protected amino terminus for controlled sequential coupling.

4. Chiral Intermediate for SAR Development

Boc-N-Me-D-Tyr-OH · DCHA is frequently used as a chiral amino acid intermediate in pharmaceutical intermediate development for peptide-based or peptidomimetic candidates. The defined D configuration and N-methyl substitution pattern make it a practical choice for producing stereochemically specific intermediates that feed into later peptide assembly, purification, and analytical confirmation steps. Development teams value this reagent when the synthesis route requires a stable, protected chiral building block that preserves the intended residue identity through intermediate handling and scale-up for research-grade manufacturing.

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