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A practical method for the preparation of protected peptide fragments using the Kaiser oxime resin

✍ Scribed by Peter T. Lansbury Jr.; Julia C. Hendrix; Annemarie I. Coffman


Publisher
Elsevier Science
Year
1989
Tongue
French
Weight
264 KB
Volume
30
Category
Article
ISSN
0040-4039

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✦ Synopsis


Resin-bound peptides can be cleaved from the Kaiser oxime resin using the tetra-nbutylammonium salts of side-chain protected amino acids to directly provide the a-aminoprotected (Boc), side-chain protected peptide. Complete experimental details are provided. The protected peptide fragments can be purified and used for fragment coupling synthetic strategies.


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## Abstract An improved method for the preparation of Merrifield resin esters is presented. This method is rapid, is free of racemization, and is not complicated by a quaternization side reaction. Chloromethylated resin beads, __t__‐butoxycarbonyl amino acid, and potassium __t__‐butoxide are heated