Design, synthesis and biological evaluation of novel donepezil–coumarin hybrids as multi-target agents for the treatment of Alzheimer’s disease
作者:Sai-Sai Xie、Jin-Shuai Lan、Xiaobing Wang、Zhi-Min Wang、Neng Jiang、Fan Li、Jia-Jia Wu、Jin Wang、Ling-Yi Kong
DOI:10.1016/j.bmc.2016.02.023
日期:2016.4
Combining N-benzylpiperidine moiety of donepezil and coumarin into in a single molecule, novel hybrids with ChE and MAO-B inhibitory activity were designed and synthesized. The biological screening results indicated that most of compounds displayed potent inhibitory activity for AChE and BuChE, and clearly selective inhibition to MAO-B. Of these compounds, 5m was the most potent inhibitor for eeAChE and eqBuChE (0.87 mu M and 0.93 mu M, respectively), and it was also a good and balanced inhibitor to hChEs and hMAO-B (1.37 mu M for hAChE; 1.98 mu M for hBuChE; 2.62 mu M for hMAO-B). Molecular modeling and kinetic studies revealed that 5m was a mixed-type inhibitor, which bond simultaneously to CAS, PAS and mid-gorge site of AChE, and it was also a competitive inhibitor, which occupied the active site of MAO-B. In addition, 5m showed good ability to cross the BBB and had no toxicity on SH-SY5Y neuroblastoma cells. Collectively, all these results suggested that 5m might be a promising multi-target lead candidate worthy of further pursuit. (C) 2016 Elsevier Ltd. All rights reserved.