Fragment-Based Substrate Activity Screening Method for the Identification of Potent Inhibitors of the <i>Mycobacterium tuberculosis</i> Phosphatase PtpB
作者:Matthew B. Soellner、Katherine A. Rawls、Christoph Grundner、Tom Alber、Jonathan A. Ellman
DOI:10.1021/ja0727520
日期:2007.8.1
A newsubstrate-based fragment approach for the identification of novel PTP inhibitors is presented. This method was applied to Mycobacterium tuberculosis PtpB, a promising new target for the treatment of tuberculosis. This resulted in the development of the most potent PtpB inhibitor reported to date (0.22 μM) with low molecular weight and good selectivity against a panel of other protein tyrosine
Design and synthesis of nonpeptidic, small molecule inhibitors for the Mycobacterium tuberculosis protein tyrosine phosphatase PtpB
作者:Katherine A. Rawls、Christoph Grundner、Jonathan A. Ellman
DOI:10.1039/c0ob00182a
日期:——
The design and synthesis of new inhibitor analogues for the Mycobacterium tuberculosis (Mtb) phosphatase PtpB is described. Analogues were synthesized by incorporation of two common and effective phosphate mimetics, the isothiazolidinone (IZD) and the difluoromethylphosphonic acid (DFMP). The basic scaffold of the inhibitor was identified from structure–activity relationships established for a previously published isoxazole inhibitor, while the phosphate mimetics were chosen based on their proven cell permeability and activity when incorporated into previously reported inhibitors for the phosphatase PTP1B. The inhibitory activity of each compound was evaluated, and each was found to have low or submicromolar affinity for PtpB.