Synthesis of hydrolysis-resistant pyridoxal 5′-phosphate analogs and their biochemical and X-ray crystallographic characterization with the pyridoxal phosphatase chronophin
A set of phosphonic acid derivatives (1-4) of pyridoxal5'-phosphate (PLP) was synthesized and characterized biochemically using purified murine pyridoxalphosphatase (PDXP), also known as chronophin. The most promising compound 1 displayed primarily competitive PDXP inhibitory activity with an IC50 value of 79μM, which was in the range of the Km of the physiological substrate PLP. We also report the
SAR of non-hydrolysable analogs of pyridoxal 5′-phosphate against low molecular weight protein tyrosine phosphatase isoforms
作者:Shirin R. DeSouza、Maxwell C. Olson、Samantha L. Tinucci、Erica K. Sinner、Rebecca S. Flynn、Quinlen F. Marshall、Henry V. Jakubowski、Edward J. McIntee
DOI:10.1016/j.bmcl.2020.127342
日期:2020.8
a role in these diseases. Pyridoxal5′-phosphate (PLP) has been shown to act as a potent but, impractical micromolar inhibitor for both isoforms. In this study, a series of non-hydrolysable phosphonate analogs of PLP were designed, synthesized and tested against the two isoforms of LMW-PTP. Assay results demonstrated that the best inhibitor for both isoforms was compound 5 with a Kis of 1.84 μM (IFA)