Abstract
Studies leading to optimization of butanedioldimethacrylate-crosslinked polystyrene supports (BDDMA–PS) forsolid phase peptide synthesis are delineated. BDDMA–PScopolymers with different crosslink densities were prepared andfunctionalised with chloromethyl groups. The reactivity of theLys(2-Cl-Z)-OH residue bound to these polymers through a benzylester linkage was investigated by following the kinetics ofacylation by the HOBt active ester of Boc-Alanine. From theresults it was observed that the rate of peptide bond formationwas maximum for a 2% BDDMA crosslinked resin. This resin wascompared with a 2% DVB-crosslinked polystyrene resin (DVB–PS). Synthesis of an extremely insoluble, hydrophobic,antiparallel β-sheeted difficult sequencepeptide LMVGGVVIA (β 34–42), C-terminal fragment of β-amyloid protein, β (1–42), wascarried out on both 2% DVB–PS and 2% BDDMA-crosslinkedpolystyrene supports. The synthesis of the peptide was carriedout using Boc amino acid strategy. Greater extent of swellingof the resino peptide, increased coupling efficiency during theassembly of amino acids and relatively high purity of synthesised peptide were observed in the case of 2% BDDMA–PS polymer.
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Ajikumar, P.K., Devaky, K.S. Optimization of butanediol dimethacrylate crosslinked polystyrene: A novel polymeric support for solid phase peptide synthesis. Letters in Peptide Science 7, 207–215 (2000). https://doi.org/10.1023/A:1011206532575
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DOI: https://doi.org/10.1023/A:1011206532575