Discovery of a novel aminopyrazine series as selective PI3Kα inhibitors. - Barlaam, Bernard; Cosulich, Sabina; Fitzek, Martina; Germain, Hervé; Green, Stephen; Hanson, Lyndsey L.; Harris, Craig S.; Hancox, Urs; Hudson, Kevin; Lambert-van der Brempt, Christine; Lamorlette, Maryannick; Magnien, Françoise; et al. (Bioorganic & Medicinal Chemistry Letters, 2017)