A Comprehensive One-Pot Synthesis of Protected Cysteine and Selenocysteine SPPS Derivative

ISSN: 1875-5305 (Online)
ISSN: 0929-8665 (Print)


Volume 21, 12 Issues, 2014


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Protein & Peptide Letters

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Prof. Ben M. Dunn
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University of Florida
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Email: bdunn@ufl.edu

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A Comprehensive One-Pot Synthesis of Protected Cysteine and Selenocysteine SPPS Derivative

Author(s): Stevenson Flemer

Affiliation: Department of Biochemistry, Room B415 Given Bldg, 89 Beaumont Ave, University of Vermont, Burlington, VT 05405

Abstract

A proof-of-principle methodology is presented in which all commercially-available cysteine (Cys) and selenocysteine (Sec) solid phase peptide synthesis (SPPS) derivatives are synthesized in high yield from easily prepared protected dichalcogenide precursors. A Zn-mediated biphasic reduction process applied to a series of four bis-Nα-protected dichalcogenide compounds allows facile conversion to their corresponding thiol and selenol intermediates followed by in-situ S- or Se-alkylation with various electrophiles to directly access twenty one known Cys and Sec SPPS derivatives. Most of these derivatives were able to be precipitated in crude form out of petroleum ether in sufficient purity for direct use as peptide building blocks. Subsequent incorporation of these derivatives into peptide models nicely illustrates their viability and applicability toward SPPS


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Article Details

Volume: 21
First Page: 1
Page Count: 1
DOI: 10.2174/0929866521666140526094224
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