Fmoc-4-(Boc-amino)-L-phenylalanine

Product Introduction

Fmoc-4-(Boc-amino)-L-phenylalanine is a protected amino acid derivative widely used in solid-phase peptide synthesis (SPPS). The compound contains an Fmoc (9-fluorenylmethoxycarbonyl) protecting group on the α-amino group and a Boc-protected amino group on the para position of the phenyl ring, providing orthogonal protection during peptide assembly.

This dual-protected amino acid enables the controlled incorporation of para-aminophenylalanine residues into peptides and proteins. The orthogonal protection strategy allows selective deprotection and functional modification during synthesis, making it valuable in peptide engineering, medicinal chemistry, and protein modification studies.

Due to its stability and compatibility with standard Fmoc-SPPS protocols, Fmoc-4-(Boc-amino)-L-phenylalanine is widely used in peptide synthesis, drug discovery research, and biomolecular engineering.

Mechanism of Reaction

Fmoc-4-(Boc-amino)-L-phenylalanine functions as a protected amino acid building block in peptide synthesis.During solid-phase peptide synthesis:

• The Fmoc protecting group is removed under mild basic conditions (commonly using piperidine) to expose the α-amino group
• The activated amino acid is then coupled to the growing peptide chain
• The Boc protecting group on the side-chain amino group remains stable during Fmoc deprotection steps
• Side-chain Boc protection can later be removed under acidic conditions during final peptide cleavage

This orthogonal protection scheme allows precise control over peptide assembly and functional group availability.

Key Research Applications

1.Solid-Phase Peptide Synthesis (SPPS)

This compound is commonly used as a building block in Fmoc-based peptide synthesis.Typical applications include:

• Incorporation of para-aminophenylalanine residues into peptides
• Peptide chain elongation in SPPS
• Custom peptide synthesis

2.Peptide Engineering

Fmoc-4-(Boc-amino)-L-phenylalanine is widely used in peptide design and structural modification studies.Applications include:

• Site-specific functionalization of peptides
• Peptide structural modification
• Bioactive peptide development

3.Bioconjugation and Chemical Biology

The protected side-chain amino group can serve as a reactive site for post-synthetic modification.Typical uses include:

• Peptide labeling
• Biomolecule conjugation
• Chemical probe development

4.Pharmaceutical and Medicinal Chemistry Research

This compound is frequently used in drug discovery programs involving peptide-based therapeutics.Applications include:

• Peptide drug design
• Structure–activity relationship (SAR) studies
• Therapeutic peptide development

Recommended Experimental Conditions

Optimization may be required depending on peptide sequence and synthesis protocol.

Advantages in Peptide Synthesis

• Orthogonally protected amino acid derivative
• Compatible with standard Fmoc-SPPS protocols
• Enables site-specific peptide modification
• Suitable for automated peptide synthesis systems

Research Areas

Researchers working in the following fields may benefit from this compound:

• Peptide synthesis research
• Medicinal chemistry
• Chemical biology
• Protein and peptide engineering
• Pharmaceutical research

What is Fmoc-4-(Boc-amino)-L-phenylalanine used for?
It is commonly used as a protected amino acid building block in Fmoc-based solid-phase peptide synthesis.

Why are both Fmoc and Boc protecting groups used in this compound?
The orthogonal protection strategy allows selective deprotection during peptide synthesis, enabling controlled functionalization.

Is this compound compatible with automated peptide synthesis systems?
Yes, it is commonly used in automated Fmoc-SPPS peptide synthesis platforms.