Boc-2,4,6-Trifluoro-L-Phenylalanine is a Boc-protected, fluorinated phenylalanine derivative in which the phenyl side chain bears three fluorine substituents at the 2, 4, and 6 positions, maintaining the L stereochemical designation at the α-carbon. The molecule contains a Boc carbamate protecting group on the amino functionality along with the free carboxyl group, and the electron-withdrawing trifluorinated aromatic ring modulates side-chain polarity and hydrophobic character relevant to peptide incorporation. As a protected amino acid building block, it is used in peptide synthesis workflows to introduce a sterically defined, fluorinated aromatic residue for structure-activity studies, chemical biology labeling strategies, and the preparation of more complex amino acid and peptide derivatives.
CAT No: CP17004
Boc-2,4,6-Trifluoro-L-Phenylalanine is an L-phenylalanine derivative protected at the alpha-amino group with a Boc (tert-butoxycarbonyl) group, while bearing a 2,4,6-trifluorinated phenyl side chain that strongly modulates aromatic electronics and hydrophobicity. This amino acid building block is widely used in peptide and peptidomimetic synthesis workflows where fluorinated aromatic residues are incorporated to tune physicochemical properties and structure. Its protected form supports standard peptide coupling strategies and provides a convenient, bench-stable handle for downstream assembly of fluorinated sequences.
1. Fluorinated Peptide Synthesis
Boc-2,4,6-Trifluoro-L-Phenylalanine is used by peptide chemists to introduce a highly electron-withdrawing, sterically defined trifluorinated aromatic side chain into peptide backbones. The Boc-protected amino group enables routine incorporation as an amino acid building block during peptide assembly, supporting the preparation of fluorinated peptides for structure-property studies, SAR-focused library synthesis, and sequence optimization. Researchers often select the 2,4,6-trifluoro substitution pattern to create distinct aromatic behavior compared with non-fluorinated phenylalanine, enabling systematic evaluation of how aromatic fluorination influences conformation, solubility trends, and chemical stability in peptide-like scaffolds.
2. Peptidomimetic And SAR Building Blocks
Boc-2,4,6-Trifluoro-L-Phenylalanine supports medicinal chemistry programs that build peptidomimetic or peptide-inspired scaffolds incorporating fluorinated residues for property modulation. In practice, medicinal chemistry teams use this building block to generate analog series where the trifluorinated phenylalanine unit serves as a defined structural element for SAR investigations, helping correlate changes in aromatic electronics and hydrophobic character with observed behavior in biochemical assays. The protected amino functionality and fluorinated side chain make it a practical intermediate for assembling larger fragments and for preparing modified peptide analogs used in lead-optimization workflows.
3. Pharmaceutical Intermediate Development
Boc-2,4,6-Trifluoro-L-Phenylalanine is also employed as a pharmaceutical intermediate in the synthesis of fluorinated amino acid derivatives and advanced building blocks used downstream in custom manufacturing of fluorinated peptide fragments. Process and development chemists value this reagent for its clear, single-residue identity and for enabling controlled introduction of the 2,4,6-trifluorophenyl motif into more complex intermediates. The Boc protection pattern provides a convenient synthetic staging point for stepwise construction of larger targets, particularly when a defined fluorinated aromatic unit must be carried through multi-step assembly before final deprotection or functional-group adjustment.
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