Boc-2,4,6-Trifluoro-D-Phenylalanine is a Boc-protected, non-natural amino acid derivative featuring a D-phenylalanine backbone bearing three fluorine atoms at the 2, 4, and 6 positions of the aromatic side chain. The molecule contains both an N-terminal Boc carbamate protecting group and a free carboxylic acid functional group, while the fluorinated benzyl side chain provides increased electron-withdrawing character and altered hydrophobic/aromatic interaction properties compared with unsubstituted phenylalanine. As a protected amino acid building block, it is used in peptide synthesis workflows to introduce the fluorinated, stereodefined phenylalanine residue and to support structure-activity studies, chemical biology labeling strategies, or analytical method development requiring defined fluorinated side-chain chemistry.
CAT No: CP17005
Boc-2,4,6-Trifluoro-D-Phenylalanine is a D-configuration, Boc-protected phenylalanine derivative bearing three ring fluorines at the 2,4,6-positions, making it a fluorinated amino acid building block with strong electronic effects and increased aromatic robustness. The Boc group supports its use as a protected amino acid in peptide and peptidomimetic assembly workflows, while the trifluoro-substituted side-chain provides a chemically distinctive handle for structure-property studies and medicinal chemistry optimization. This reagent is typically handled by peptide chemistry and medicinal chemistry teams developing fluorinated analogs where aromatic electronics and sterics are tuned through incorporation of the fluorinated phenyl ring.
1. Peptidomimetic Building Blocks
Boc-2,4,6-Trifluoro-D-Phenylalanine is used by medicinal chemistry and peptide discovery groups to introduce a D-amino acid motif and a 2,4,6-trifluorophenyl side chain into peptidomimetic scaffolds. The Boc protection supports segment condensation and protected-amino-acid workflows used to assemble modified peptide-like structures, while the trifluoro substitution is leveraged to probe how aromatic electron-withdrawing effects influence conformation, local interactions, and overall structure-activity relationship trends. This building block is especially relevant when teams want to compare fluorinated versus non-fluorinated aromatic residues under otherwise matched backbone conditions.
2. Fluorinated Peptide Synthesis
Boc-2,4,6-Trifluoro-D-Phenylalanine serves as a defined fluorinated residue for custom peptide synthesis where incorporation of a D-phenylalanine analog is required for stereochemical control. Peptide synthesis groups use this protected amino acid to prepare peptides and peptide fragments containing a 2,4,6-trifluorinated aromatic side chain, enabling systematic evaluation of how ring fluorination affects physicochemical properties such as hydrophobicity balance and aromatic interaction patterns. The Boc-protected form aligns with protected-residue strategies used in solution-phase or fragment-based peptide assembly, supporting downstream purification and characterization of fluorinated peptide targets.
3. Medicinal Chemistry SAR Studies
Boc-2,4,6-Trifluoro-D-Phenylalanine is frequently selected by small-molecule and peptide drug discovery teams conducting SAR work on fluorinated analog series, particularly when aromatic fluorination is used as a design element to modulate electronic distribution and steric presentation on the phenyl ring. The reagent's D-stereochemistry supports building stereochemically defined analogs for comparing backbone stereochemical effects alongside aromatic fluorination effects. In practical development workflows, this allows researchers to generate matched intermediate sets for parallel synthesis and analytical comparison, including LC-MS characterization of fluorinated peptide intermediates and final fluorinated constructs.
4. Pharmaceutical Intermediate Development
Boc-2,4,6-Trifluoro-D-Phenylalanine is also used as a specialized protected amino acid intermediate for producing fluorinated amino acid derivatives and peptide-related intermediates required in industrial and contract manufacturing development. Process chemistry and development teams rely on the defined trifluoro-aromatic motif to create consistent building blocks for later coupling steps, enabling controlled manufacturing of fluorinated peptide fragments used in candidate synthesis campaigns. The combination of Boc protection and the stable, strongly electron-withdrawing 2,4,6-trifluorophenyl side chain supports robust intermediate handling during multi-step assembly and characterization of fluorinated targets.
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