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Fmoc-protein synthesis: Preparation of peptide thioesters using a side-chain anchoring strategy

Wang, P.; Miranda, L., P.

International Journal of Peptide Research and Therapeutics 11(2): 117-123

2005

ISSN/ISBN: 1573-3149
DOI: 10.1007/s10989-004-4704-5
Accession: 012096379
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A side-chain anchoring approach for preparation of peptide thioesters by Fmoc SPPS is reported. This strategy involves the side-chain anchoring of trifunctional amino acids, such as Lys, Glu, Gln, Asp and Asn, for peptide elongation and the post-chain assembly introduction of thioester functionality. This approach allows for the use of standard nucleophilic Fmoc peptide synthesis cycles, which are generally incompatible with thioester-based resin-linkages. The strategy was successfully demonstrated by the straightforward Fmoc syntheses of a model RANTES(1-33) thioester peptide.

Fmoc-protein synthesis: Preparation of peptide thioesters using a side-chain anchoring strategy

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