Journal
ACS MEDICINAL CHEMISTRY LETTERS
Volume 6, Issue 6, Pages 671-676Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acsmedchemlett.5b00089
Keywords
P2X7; neuro-inflammation; depression
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We describe the synthesis and SAR of 1,2,3-triazolopiperidines as a novel series of potent, brain penetrant P2X7 antagonists. Initial efforts yielded a series of potent human P2X7R antagonists with moderate to weak rodent potency, some CYP inhibition, poor metabolic stability, and low solubility. Further work in this series, which focused on the SAR of the N-linked heterocyde, not only increased the potency at the human P2X7R but also provided compounds with good potency at the rat P2X7R These efforts eventually delivered a potent rat and human P2X7R antagonist with good physicochemical properties, an excellent pharmacokinetic profile, good partitioning into the CNS, and demonstrated in vivo target engagement after oral dosing.
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