新型吡啶并[3,4- g ]喹唑啉衍生物作为CLK1和DYRK1A抑制剂:合成,生物学评估和结合模式分析
摘要:
Cdc2样激酶1(CLK1)和酪氨酸磷酸化双特异性调节激酶1A(DYRK1A)参与了替代性的前mRNA剪接的调节。该过程的失调与癌症进展和神经退行性疾病有关,这使CLK1和DYRK1A成为重要的治疗靶标。在这里,我们描述了新的吡啶基[3,4- g]喹唑啉衍生物及其对CDK5,CK1,GSK3,CLK1和DYRK1A的抑制作用评估。在2位上引入氨基烷基氨基会产生几种具有低纳摩尔亲和力且对CLK1和/或DYRK1A具有选择性抑制的化合物。他们对几种永生或癌细胞系的评估显示了不同程度的细胞活力降低。CLK1与两种最有效化合物的共晶体结构揭示了吡啶并[3,4- g ]喹唑啉支架的两种替代结合模式,可用于未来的抑制剂设计。
Design, synthesis and evaluation of 4-dimethylamine flavonoid derivatives as potential multifunctional anti-Alzheimer agents
摘要:
A new series of 4-dimethylamine flavonoid derivatives were designed and synthesized as potential multifunctional anti-Alzheimer agents. The inhibition of cholinesterase activity, self-induced beta-amyloid (A beta) aggregation, and antioxidant activity by these derivatives was investigated. Most of the compounds exhibited potent acetylcholinesterase (AChE) and butyrylcholinesterase (BChE) inhibitory activity. A Lineweaver-Burk plot and molecular modeling study showed that these compounds targeted both the catalytic active site (CAS) and peripheral anionic site (PAS) of AChE. The derivatives showed potent self-induced A beta aggregation inhibition and peroxyl radical absorbance activity. Moreover, compound 6d significantly protected PC12 neurons against H2O2-induced cell death at low concentrations. Thus, these compounds could become multifunctional agents for further development for the treatment of AD. (C) 2016 Elsevier Masson SAS. All rights reserved.