Researchers at Aston Science Co. Ltd. and Korea Research Institute of Chemical Technology have synthesized phenylsulfonamide derivatives acting as eukaryotic translation initiation factor 2-α kinase 1 (HRI) and/or translation initiation factor 2-α kinase 3 (PERK) and/or eukaryotic translation initiation factor 2-α kinase 4 (GCN2) inhibitors reported to be useful for the treatment of cancer.