Solid phase peptide synthesis on hydrophilic supports. Part II--Studies using Perloza beaded cellulose

Area of Science:

• Biochemistry and Organic Chemistry
• Materials Science
• Peptide Synthesis

Background:

• Cellulose-based materials offer a sustainable and versatile scaffold for chemical modifications.
• Developing efficient solid supports is crucial for advancing peptide synthesis methodologies.
• Functionalized spacer arms are essential for improving accessibility and yield in solid-phase peptide synthesis.

Purpose of the Study:

• To create a novel functionalized beaded cellulose support for peptide synthesis.
• To evaluate the efficacy of modified spacer arms in enhancing peptide synthesis.
• To demonstrate the versatility of the support by synthesizing a range of biologically relevant peptides.

Main Methods:

• Modification of beaded cellulose (Perloza) with acrylonitrile and subsequent reduction to introduce aminopropyl groups.
• Extension of the aminopropyl spacer arm with glycolamido or Fmoc-amino acid moieties.
• Solid-phase peptide synthesis using modified t-butyloxycarbonyl (Boc) or fluorenylmethoxycarbonyl (Fmoc) protocols on the functionalized support.

Main Results:

• Successful synthesis of various peptides, including Merrifield test peptide, leucine-enkephalin, and angiotensin I and II.
• Demonstrated compatibility of the functionalized support with both Boc and Fmoc peptide synthesis strategies.
• Peptides were efficiently cleaved from the support and purified, indicating the integrity of the synthesized sequences.

Conclusions:

• The developed aminopropyl functionalized beaded cellulose support is a viable and effective platform for solid-phase peptide synthesis.
• The extended spacer arms contribute to successful peptide chain elongation and cleavage.
• This novel support offers a promising alternative for the synthesis of diverse peptide sequences.