2 research outputs found

    Sulfonamides as Selective Na<sub>V</sub>1.7 Inhibitors: Optimizing Potency, Pharmacokinetics, and Metabolic Properties to Obtain Atropisomeric Quinolinone (AM-0466) that Affords Robust in Vivo Activity

    No full text
    Because of its strong genetic validation, Na<sub>V</sub>1.7 has attracted significant interest as a target for the treatment of pain. We have previously reported on a number of structurally distinct bicyclic heteroarylsulfonamides as Na<sub>V</sub>1.7 inhibitors that demonstrate high levels of selectivity over other Na<sub>V</sub> isoforms. Herein, we report the discovery and optimization of a series of atropisomeric quinolinone sulfonamide inhibitors [Bicyclic sulfonamide compounds as sodium channel inhibitors and their preparation. WO 2014201206, 2014] of Na<sub>V</sub>1.7, which demonstrate nanomolar inhibition of Na<sub>V</sub>1.7 and exhibit high levels of selectivity over other sodium channel isoforms. After optimization of metabolic and pharmacokinetic properties, including PXR activation, CYP2C9 inhibition, and CYP3A4 TDI, several compounds were advanced into in vivo target engagement and efficacy models. When tested in mice, compound <b>39</b> (AM-0466) demonstrated robust pharmacodynamic activity in a Na<sub>V</sub>1.7-dependent model of histamine-induced pruritus (itch) and additionally in a capsaicin-induced nociception model of pain without any confounding effect in open-field activity

    Sulfonamides as Selective Na<sub>V</sub>1.7 Inhibitors: Optimizing Potency, Pharmacokinetics, and Metabolic Properties to Obtain Atropisomeric Quinolinone (AM-0466) that Affords Robust in Vivo Activity

    No full text
    Because of its strong genetic validation, Na<sub>V</sub>1.7 has attracted significant interest as a target for the treatment of pain. We have previously reported on a number of structurally distinct bicyclic heteroarylsulfonamides as Na<sub>V</sub>1.7 inhibitors that demonstrate high levels of selectivity over other Na<sub>V</sub> isoforms. Herein, we report the discovery and optimization of a series of atropisomeric quinolinone sulfonamide inhibitors [Bicyclic sulfonamide compounds as sodium channel inhibitors and their preparation. WO 2014201206, 2014] of Na<sub>V</sub>1.7, which demonstrate nanomolar inhibition of Na<sub>V</sub>1.7 and exhibit high levels of selectivity over other sodium channel isoforms. After optimization of metabolic and pharmacokinetic properties, including PXR activation, CYP2C9 inhibition, and CYP3A4 TDI, several compounds were advanced into in vivo target engagement and efficacy models. When tested in mice, compound <b>39</b> (AM-0466) demonstrated robust pharmacodynamic activity in a Na<sub>V</sub>1.7-dependent model of histamine-induced pruritus (itch) and additionally in a capsaicin-induced nociception model of pain without any confounding effect in open-field activity
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