Discovery of novel pyrido[3,2‐d]pyrimidine derivatives as selective and potent PI3Kδ inhibitors
Huanrong Bai,
Jiajia Sun,
Hao Lei
et al.
Abstract:The δ isoform of class I PI3K (PI3Kδ) has been shown as a promising target for the treatment of hematologic malignancies and immune diseases. Herein, a series of pyrido[3,2‐d]pyrimidine derivatives were designed, synthesized and evaluated for the preliminary bioactivity. Compared with idelalisib, compound S5 exhibited excellent enzyme activity against PI3Kδ (IC50 = 2.82 nM) and strong antiproliferation activity against SU‐DHL‐6 cells (IC50 = 0.035 μM). Besides, S5 inhibited the phosphorylation of Akt, which is… Show more
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