A practical method for the preparation of protected peptide fragments using the Kaiser oxime resin
β 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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β¦ 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.
π SIMILAR VOLUMES
Resin bound peptides can be cleaved from the Kaiser oxime resin using various oxygen nucleophiles (H20, CH3OH, PhCH2OH) with DBU. Fully protected peptide acids and esters are obtained rapidly and with good yields using this new method of cleavage.
A practical method for the preparation of ot-N-BOC-epoxides from protected amino acid esters based on the Kowalski homologation reaction is described. This procedure can be readily performed on a large scale without the use of hozardous reagents and has aUowed preparation of epoxides 3 in multi-kilo
## 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__βbutoxycarbonyl amino acid, and potassium __t__βbutoxide are heated