Design, Synthesis, and Structure-Activity Relationship Optimization of Pyrazolopyrimidine Amide Inhibitors of Phosphoinositide 3-Kinase γ (PI3Kγ).
Basic Information
ID: ALA5154644
Journal: J Med Chem
Title: Design, Synthesis, and Structure-Activity Relationship Optimization of Pyrazolopyrimidine Amide Inhibitors of Phosphoinositide 3-Kinase γ (PI3Kγ).
Authors: Mata G, Miles DH, Drew SL, Fournier J, Lawson KV, Mailyan AK, Sharif EU, Yan X, Beatty JW, Banuelos J, Chen J, Ginn E, Chen A, Gerrick KY, Pham AT, Wong K, Soni D, Dhanota P, Shaqfeh SG, Meleza C, Narasappa N, Singh H, Zhao X, Jin L, Schindler U, Walters MJ, Young SW, Walker NP, Leleti MR, Powers JP, Jeffrey JL.
Abstract: Phosphoinositide-3-kinase γ (PI3Kγ) is highly expressed in immune cells and promotes the production and migration of inflammatory mediators. The inhibition of PI3Kγ has been shown to repolarize the tumor immune microenvironment to a more inflammatory phenotype, thereby controlling immune suppression in cancer. Herein, we report the structure-based optimization of an early lead series of pyrazolopyrimidine isoindolinones, which culminated in the discovery of highly potent and isoform-selective PI3Kγ inhibitors with favorable drug-like properties. X-ray cocrystal structure analysis, molecular docking studies, and detailed structure-activity relationship investigations resulted in the identification of the optimal amide and isoindolinone substituents to achieve a desirable combination of potency, selectivity, and metabolic stability. Preliminary in vitro studies indicate that inhibition of PI3Kγ with compound 56 results in a significant immune response by increasing pro-inflammatory cytokine gene expression in M1 macrophages.
CiteXplore: 34672584
DOI: 10.1021/acs.jmedchem.1c01153
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