Synthesis and biological evaluation of 4-(piperid-3-yl)amino substituted 6-pyridylquinazolines as potent PI3Kδ inhibitors
作者:Yifan Feng、Weiming Duan、Shu Fan、Hao Zhang、San-Qi Zhang、Minhang Xin
DOI:10.1016/j.bmc.2019.07.051
日期:2019.10
study, a new series of 4-(piperid-3-yl)amino substituted 6-pyridylquinazoline derivatives were synthesized. After biological evaluation, compounds A5 and A8 were identified as potent PI3Kδ inhibitors, with IC50 values of 1.3 and 0.7 nM, respectively, which are equivalent to or better than idelalisib (IC50 = 1.2 nM). Further PI3K isoforms selectivity evaluation showed that compound A5 afforded excellent
PI3Kδ是开发抗癌药物的引人入胜的目标。在这项研究中,合成了一系列新的4-(哌啶-3-基)氨基取代的6-吡啶基喹唑啉衍生物。经过生物学评估后,化合物A5和A8被确定为有效的PI3Kδ抑制剂,IC 50值分别为1.3和0.7 nM,与艾屈拉西布相当或更好(IC 50 = 1.2 nM)。进一步的PI3K同工型选择性评估表明,化合物A5相对于PI3Kα,PI3Kβ和PI3Kγ具有优异的PI3Kδ选择性。A8表现出优于PI3Kα和PI3Kβ的PI3Kδ/γ选择性。此外,化合物A5和A8选择性地表现出对SU-DHL-6的体外抗增殖,IC 50值为0.16和0.12μM。Western印迹分析表明,A8可以减弱AKT S473的磷酸化。分子对接研究表明,A8与PI3Kδ形成了三个关键的H键作用,这可能解释了其对PI3Kδ的有效抑制作用。这些发现表明4-(哌啶-3-基)氨基取代的6-吡啶基喹唑啉衍