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Further studies into the Boc/solid‐phase synthesis of Ser(P)‐ and Thr(P)‐containing peptides

Identifieur interne : 00D763 ( Main/Exploration ); précédent : 00D762; suivant : 00D764

Further studies into the Boc/solid‐phase synthesis of Ser(P)‐ and Thr(P)‐containing peptides

Auteurs : John W. Perich [France] ; Evelyne Terzi [France] ; Eric Carnazzi [France] ; Rene Seyer [France] ; Elisabeth Trifilieff [France]

Source :

RBID : ISTEX:C7C9A9F164343CCABD3B403176708714F0773C4E

Descripteurs français

English descriptors

Abstract

The Ser(P)‐containing peptide corresponding to phospholamban 11‐19, Ac‐Ala‐Ile‐Arg‐Are‐Ala‐Ser(P)‐Thr‐Ile‐Glu‐NH2, was prepared by the use of Boc‐Ser(PO3Ph2)‐OH in Boc/solid‐phase peptide synthesis followed by HF cleavage of the peptide from the polystyrene resin and subsequent platinum‐mediated hydrogenolytic cleavage of the phenyl phosphate groups. A study of the HF deprotection step showed that extensive dephosphorylation of the Ser(PO3Ph2)‐residue occurred using three commonly used HF conditions and gave rise to large quantities of the Ser‐containing peptide. The subsequent study of model peptide systems under standard HF conditions established firstly that the extent of dephosphorylation was dependent on the HF‐contact time, and secondly that the Ser(PO3Ph2) residue underwent dephosphorylation at a slightly higher rate than the Thr(PO3Ph2) residue. © Munksgaard 1994.

Url:
DOI: 10.1111/j.1399-3011.1994.tb01013.x


Affiliations:


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<div type="abstract" xml:lang="en">The Ser(P)‐containing peptide corresponding to phospholamban 11‐19, Ac‐Ala‐Ile‐Arg‐Are‐Ala‐Ser(P)‐Thr‐Ile‐Glu‐NH2, was prepared by the use of Boc‐Ser(PO3Ph2)‐OH in Boc/solid‐phase peptide synthesis followed by HF cleavage of the peptide from the polystyrene resin and subsequent platinum‐mediated hydrogenolytic cleavage of the phenyl phosphate groups. A study of the HF deprotection step showed that extensive dephosphorylation of the Ser(PO3Ph2)‐residue occurred using three commonly used HF conditions and gave rise to large quantities of the Ser‐containing peptide. The subsequent study of model peptide systems under standard HF conditions established firstly that the extent of dephosphorylation was dependent on the HF‐contact time, and secondly that the Ser(PO3Ph2) residue underwent dephosphorylation at a slightly higher rate than the Thr(PO3Ph2) residue. © Munksgaard 1994.</div>
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