Yukiyo Arai

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The design, synthesis and SAR studies of novel 4,5,6,7-tetrahydropyrazolopyrazines as metabotropic glutamate receptor 5 (mGluR5) negative allosteric modulators (NAMs) are presented in this letter. Starting from a HTS hit compound (1, IC50=477nM), optimization of various groups led to the synthesis of a potent mGluR5 NAM (32, IC50=75nM) with excellent rat PK(More)
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