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Synthesis, SAR, and Pharmacological Characterization of Brain Penetrant P2X7 Receptor Antagonists.


ABSTRACT: 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 heterocycle, 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.

SUBMITTER: Savall BM 

PROVIDER: S-EPMC4468405 | biostudies-literature | 2015 Jun

REPOSITORIES: biostudies-literature

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Synthesis, SAR, and Pharmacological Characterization of Brain Penetrant P2X7 Receptor Antagonists.

Savall Brad M BM   Wu Duncan D   De Angelis Meri M   Carruthers Nicholas I NI   Ao Hong H   Wang Qi Q   Lord Brian B   Bhattacharya Anindya A   Letavic Michael A MA  

ACS medicinal chemistry letters 20150424 6


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 heterocycle, not only increased the potency at the human P2X7R but also provided compounds with good potency at the rat P2X7R. These  ...[more]

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