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Issue 4, 2007
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The synthesis of phosphopeptides via the Bpoc-based approach

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The 2-(p-biphenylyl)-2-propyloxycarbonyl (Bpoc) group was examined as an Nα-protecting group in the stepwise assembly of the MAP Kinase ERK2 [178–188; Thr(P)183, Tyr(P)185] peptide. The mild acid deprotection of the Bpoc group permitted (i) incorporation of a fully protected phosphothreonyl derivative and (ii) a TFA-based final cleavage step. The first five C-terminal residues (184–188) were incorporated in the Fmoc mode of peptide synthesis, with all subsequent amino acids coupled as their Bpoc–Xxx–OH derivatives. The target product was obtained in high purity and yield, indicating that a Bpoc-based approach to phosphopeptide synthesis was compatible with both the acid-labile side chain protecting groups employed and Hmp–Wang resin.

Graphical abstract: The synthesis of phosphopeptides via the Bpoc-based approach

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Publication details

The article was received on 04 Dec 2006, accepted on 06 Dec 2006 and first published on 12 Jan 2007

Article type: Paper
DOI: 10.1039/B617699M
Citation: Org. Biomol. Chem., 2007,5, 664-670

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    The synthesis of phosphopeptides via the Bpoc-based approach

    T. J. Attard, E. C. Reynolds and J. W. Perich, Org. Biomol. Chem., 2007, 5, 664
    DOI: 10.1039/B617699M

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