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Continuous flow solid (gel) phase peptide synthesis using unsupported ultra-high load polymers.

A F Coffey1, T Johnson

  • 1School of Applied Sciences, Wolverhampton Polytechnic, UK.

International Journal of Peptide and Protein Research
|May 1, 1992
PubMed
Summary
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A new continuous flow apparatus simplifies solid-phase peptide synthesis using unsupported phenolic beads. This method efficiently produces peptides like [Leu5]-enkephalin and dermorphin, showing potential for scale-up.

Area of Science:

  • Organic Chemistry
  • Biochemistry
  • Chemical Engineering

Background:

  • Solid-phase peptide synthesis (SPPS) is crucial for peptide production.
  • Current SPPS methods can be time-consuming and labor-intensive.
  • Developing efficient and scalable synthesis techniques is an ongoing challenge.

Purpose of the Study:

  • To describe a novel, manually operated, continuous flow apparatus for solid-phase peptide synthesis.
  • To demonstrate the efficiency of this system using N-alpha-Boc protected amino acids.
  • To evaluate the potential for scaling up the synthesis process.

Main Methods:

  • Utilized an unsupported phenolic bead core network with high matrix loading (5 mmol g-1).
  • Performed synthesis in a low-pressure flow reactor.

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  • Employed a "layered displacement" technique for reagent and solvent exchange.

    • Main Results:

    • Successfully synthesized [Leu5]-enkephalin and dermorphin using the described apparatus.
    • Demonstrated efficient peptide synthesis through optimized reagent and solvent layering.
    • Investigated the feasibility of scaling up the continuous flow synthesis process.

    Conclusions:

    • The described continuous flow apparatus offers a simple and efficient method for solid-phase peptide synthesis.
    • The "layered displacement" technique is key to the system's effectiveness.
    • The system shows promise for both laboratory-scale and potentially larger-scale peptide production.