A combination of flow and batch mode processes for the efficient preparation of mGlu2/3 receptor negative allosteric modulators (NAMs)

    • Raveendra Panickar Dhanya, Ananda Herath, Douglas J. Sheffler, Nicholas D.P. Cosford
    • Cancer Metabolism and Signaling Networks Program, NCI-Designated Cancer Center, Sanford Burnham Prebys Medical Discovery Institute, 10901 N. Torrey Pines Rd., La Jolla, CA 92037, USA

    Benzodiazepinones are privileged scaffolds with activity against multiple therapeutically relevant biological targets. In support of our ongoing studies around allosteric modulators of metabotropic glutamate receptors (mGlus) we required the multigram synthesis of a β-ketoester key intermediate. We report the continuous flow synthesis of tert-butyl 3-(2-cyanopyridin-4-yl)-3-oxopropanoate and its transformation to potent mGlu2/3 negative allosteric modulators (NAMs) in batch mode.

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