Boc-2-Cyano-D-Phenylalanine is a protected, non-natural amino acid derivative featuring a D-configuration at the alpha carbon and a phenylalanine-like aromatic side chain bearing a cyano substituent at the beta position. The molecule contains a Boc-protected amino group and a free carboxyl group, with the nitrile side-chain functionality providing a polar, chemically stable handle that can influence peptide conformation and intermolecular interactions. As a stepwise peptide-synthesis building block, the Boc protection supports chemoselective coupling at the carboxylate while the beta-cyano group enables structure-activity studies, backbone modification approaches, and analytical method development for cyano-containing peptide analogues.
CAT No: CP11705
Boc-2-Cyano-D-Phenylalanine is a D-configured phenylalanine derivative bearing a Boc-protecting group on the amino functionality and a side-chain 2-cyano substituent that adds strong polarity and synthetic handle potential. This amino acid building block is commonly used in peptide and peptidomimetic intermediate workflows where controlled stereochemistry and a functionalized side chain are required. Its protected form supports stepwise assembly strategies and downstream conversion to more elaborated cyano-containing motifs used in medicinal chemistry and structure-activity studies.
1. Peptidomimetic Building Block
Boc-2-Cyano-D-Phenylalanine is used as a stereodefined, functionalized amino acid building block for constructing peptidomimetic scaffolds and modified peptide analogs in medicinal chemistry programs. Researchers value the D-configuration for introducing conformational and proteolytic stability features into analog series, while the side-chain cyano group provides a polar substituent that can influence local interactions and enable further derivatization during SAR development. The Boc-protected amino group allows incorporation into protected intermediate sequences used in custom peptide synthesis and analog libraries, supporting consistent handling across parallel synthesis campaigns.
2. Pharmaceutical Intermediate Synthesis
Boc-2-Cyano-D-Phenylalanine serves as a practical precursor for cyano-functionalized intermediates used in small-molecule and peptide-drug discovery chemistry. Process and R&D teams often select this building block when they need a protected, stereodefined amino acid framework that can be carried through to downstream transformations while retaining the cyano functionality as a chemically informative substituent. In intermediate development workflows, the Boc protection supports controlled reactivity management, enabling conversion into more advanced heterocycle precursors, nitrile-bearing fragments, or other cyano-utilizing motifs relevant to medicinal chemistry synthesis planning.
3. Stereodefined SAR Analog Production
Boc-2-Cyano-D-Phenylalanine is frequently employed to generate stereochemically consistent SAR analogs where the identity of the chiral center and the presence of a cyano-bearing side chain must be maintained across series. Medicinal chemistry groups use this reagent to prepare D-amino-acid-containing variants that probe how side-chain electronics and polarity affect binding-site complementarity and overall analog behavior. The protected amino group supports reliable incorporation into protected intermediate sequences, making it a convenient choice for assembling cyano-substituted peptide-like structures used in lead optimization and structure-activity comparison studies.
4. Protected Amino Acid Intermediate Handling
Boc-2-Cyano-D-Phenylalanine is well aligned with workflows that rely on protected amino acid intermediates for sequential coupling and controlled downstream elaboration. Chemical synthesis teams use the Boc-protected form to manage amino-group reactivity during multistep preparation of functionalized amino acid derivatives, including cyano-retaining intermediates that require careful handling to avoid undesired side reactions. This makes the reagent useful in research-grade intermediate manufacturing and custom synthesis settings where stereochemical fidelity and functional-group compatibility are key constraints for producing defined, reproducible building blocks for subsequent assembly steps.
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