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  • Title: When inhibitors do not inhibit: critical evaluation of rational drug design targeting chorismate mutase from Mycobacterium tuberculosis.
    Author: Munack S, Leroux V, Roderer K, Ökvist M, van Eerde A, Gundersen LL, Krengel U, Kast P.
    Journal: Chem Biodivers; 2012 Nov; 9(11):2507-27. PubMed ID: 23161632.
    Abstract:
    Tuberculosis (TB) is a devastating disease that claims millions of lives every year. Hindered access or non-compliance to medication, especially in developing countries, led to drug resistance, further aggravating the situation. With current standard therapies in use for over 50 years and only few new candidates in clinical trials, there is an urgent call for new TB drugs. A powerful tool for the development of new medication is structure-guided design, combined with virtual screening or docking studies. Here, we report the results of a drug-design project, which we based on a publication that claimed the structure-guided discovery of several promising and highly active inhibitors targeting the secreted chorismate mutase (*MtCM) from Mycobacterium tuberculosis. We set out to further improve on these compounds and synthesized a series of new derivatives. Thorough evaluation of these molecules in enzymatic assays revealed, to our dismay, that neither the claimed lead compounds, nor any of the synthesized derivatives, show any inhibitory effects against *MtCM.
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