Journal
JOURNAL OF MEDICINAL CHEMISTRY
Volume 64, Issue 12, Pages 8053-8075Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acs.jmedchem.1c00434
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Starting from previously described PI3K gamma inhibitors, exploration of structure-activity relationships led to the discovery of highly potent dual PI3K gamma delta inhibitors. The optimized compound, AZD8154, demonstrated efficacy in allergic asthma models and showed long duration of action in the lung with low systemic exposure and high selectivity against off-targets.
Starting from our previously described PI3K gamma inhibitors, we describe the exploration of structure-activity relationships that led to the discovery of highly potent dual PI3K gamma delta inhibitors. We explored changes in two positions of the molecules, including macrocyclization, but ultimately identified a simpler series with the desired potency profile that had suitable physicochemical properties for inhalation. We were able to demonstrate efficacy in a rat ovalbumin challenge model of allergic asthma and in cells derived from asthmatic patients. The optimized compound, AZD8154, has a long duration of action in the lung and low systemic exposure coupled with high selectivity against off-targets.
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