Discovery of 3-benzyl-1,3-benzoxazine-2,4-dione analogues as allosteric mitogen-activated kinase kinase (MEK) inhibitors and anti-enterovirus 71 (EV71) agents
作者:Jing Sun、Yan Niu、Chao Wang、Hao Zhang、Bingyu Xie、Fengrong Xu、Hongwei Jin、Yihong Peng、Lei Liang、Ping Xu
DOI:10.1016/j.bmc.2016.05.055
日期:2016.8
Enterovirus 71 (EV71) is a kind of RNA virus and one of the two causes of Hand, foot and mouth disease (HFMD). Inhibitors that target key components of Ras/Raf/MEK/ERK pathway in host cells could impair replication of EV71. A series of 3-benzyl-1,3-benzoxazine-2,4-diones were designed from a specific MEK inhibitor G8935, by replacing the double bond between C3 and C4 within the coumarin scaffold with
肠病毒71(EV71)是一种RNA病毒,是手足口病(HFMD)的两种原因之一。靶向宿主细胞中Ras / Raf / MEK / ERK途径关键成分的抑制剂可能会破坏EV71的复制。由特定的MEK抑制剂G8935设计了一系列3-苄基-1,3-苯并恶嗪-2,4-二酮,方法是用酰胺键取代香豆素骨架中C3和C4之间的双键。在12种衍生物中,一种化合物(9f)表现出亚微摩尔抑制活性。对9f的进一步优化导致产生了两种活性化合物(9k和9m),具有纳摩尔生物活性(55 nM和60 nM)。酶促测定的结果还表明,该系列化合物是未磷酸化MEK1的变构抑制剂。通过分子动力学模拟预测化合物9k的结合方式,其关键相互作用与已发表的MEK1 / 2变构抑制剂相同。在基于细胞的测定中,化合物9k和9m可有效抑制横纹肌肉瘤(RD)细胞中的ERK1 / 2途径,EV71 VP1的表达和EV71诱导的细胞病变效应(CPE)。