Hubbard CE, Barrios AM. A highly efficient route to enantiomerically pure l-N-Bz-Pmp(t-Bu)2-OH and incorporation into a peptide-based protein tyrosine phosphatase inhibitor.
Bioorg Med Chem Lett 2008;
18:679-81. [PMID:
18240386 DOI:
10.1016/j.bmcl.2007.11.056]
[Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Abstract
Phosphonomethyl phenylalanine (Pmp), a nonhydrolyzable mimic of phosphotyrosine, is an important building block in the development of peptide-based PTP inhibitors. We have designed a novel, efficient synthesis of N-Bz-Pmp(t-Bu)2-OH. A Pmp-containing peptide based on a known biological substrate of the tyrosine phosphatase CD45 (Ac-TEGQ-Pmp-QPQP-NH2) inhibits CD45 with an IC50 value of approximately 100 microM with virtually no inhibition of TCPTP up to concentrations of 120 microM.
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