2,5-Dimethy-D-Phenylalanine is a non-natural, D-configured phenylalanine derivative in which the aromatic side chain bears two additional methyl substituents at the 2 and 5 positions. The molecule contains the standard amino and carboxyl functional groups of an amino acid, while its side chain is characterized by a substituted benzyl aromatic ring that alters steric and hydrophobic character relative to unsubstituted phenylalanine. This substituted amino acid is used in peptide synthesis and structure-activity or structure-property studies where incorporation of a D-configured, sterically modified aromatic residue helps probe effects of side-chain substitution and stereochemistry on peptide conformation and binding interactions.
CAT No: CP14002
2,5-Dimethy-D-Phenylalanine is a D-configured, non-proteinogenic phenylalanine analog bearing two methyl substituents on the aromatic ring (2,5-dimethyl substitution). This sterically and electronically modified side chain is commonly leveraged in peptide and peptidomimetic design to probe structure-activity relationships, conformational effects, and aromatic microenvironment contributions. As an amino acid building block, it is typically handled as a chiral intermediate for downstream incorporation into synthetic peptides and medicinal chemistry scaffolds where the D-stereocenter and substituted phenyl ring are key design elements.
1. Peptidomimetic SAR Building Blocks
2,5-Dimethy-D-Phenylalanine is used in medicinal chemistry and chemical biology programs that develop peptidomimetics and constrained peptide analogs for structure-activity relationship (SAR) studies. Researchers incorporate this D-amino acid building block into short peptide series or larger scaffold fragments to systematically vary aromatic side-chain shape, hydrophobic contact patterns, and steric bulk around the residue position. The 2,5-dimethyl-substituted phenyl ring provides a practical handle for tuning local aromatic interactions while the D-configuration supports the design of stereochemically defined analogs for structure-function comparisons.
2. D-Amino Acid Peptide Synthesis
2,5-Dimethy-D-Phenylalanine is selected by peptide chemistry groups constructing D-amino acid-containing peptides for research-grade studies and custom peptide manufacturing workflows. The residue's D-stereocenter enables precise stereochemical placement within peptide sequences, which is valuable when comparing analogs that differ only by stereochemistry or aromatic substitution. In practice, this building block is incorporated during segment assembly or solid-phase peptide synthesis workflows to generate peptides with defined aromatic substitution patterns for downstream characterization, including chromatographic profiling and mass spectrometric confirmation of sequence integrity.
3. Protease Resistance Studies
2,5-Dimethy-D-Phenylalanine is frequently used in studies that evaluate how non-natural stereochemistry and aromatic substitution influence peptide stability in proteolytic environments. Chemical biology and peptide development teams incorporate this D, 2,5-dimethyl phenylalanine analog into test peptides to create defined variants for comparing degradation behavior across residue positions. The combination of D-configuration and the sterically modified aromatic ring supports residue-level control in stability screening workflows, where researchers need reproducible, sequence-defined substrates rather than mixtures of stereochemical or structural isomers.
4. Chiral Intermediate For Medicinal Chemistry
2,5-Dimethy-D-Phenylalanine is also used as a chiral intermediate in pharmaceutical intermediate development and specialty chemical synthesis when a D-amino acid motif with a 2,5-dimethyl-substituted phenyl side chain is required. Process and R&D chemists employ it to prepare downstream protected amino acid derivatives or advanced scaffold components used in SAR libraries and analog campaigns. The defined stereochemical identity and substituted aromatic functionality make it a practical starting point for generating stereochemically consistent series of analogs used in iterative medicinal chemistry design and analytical method development.
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