Design, synthesis and biological evaluation of new carbazole-coumarin hybrids as dual binding site inhibitors of acetylcholinesterase
作者:Meng-qiu Song、Wei Min、Jing Wang、Xin-Xin Si、Xiu-Jun Wang、Yu-Wei Liu、Da-Hua Shi
DOI:10.1016/j.molstruc.2020.129784
日期:2021.4
Twelve carbazole-coumarin hybrids were synthesized and biologically evaluated as dual binding site acetylcholinesterase inhibitors. The structures of the carbazole-coumarin hybrids were confirmed by IR, NMR, HRMS and single-crystal X-ray diffraction studies. The compound 3j had the crystal system of triclinic and the space group of P-1. The cholinesterase inhibitory activity of synthesized compounds
合成了十二个咔唑-香豆素杂化物,并对其生物学评估为双结合位点乙酰胆碱酯酶抑制剂。通过IR,NMR,HRMS和单晶X射线衍射研究证实了咔唑-香豆素杂化物的结构。化合物3j具有三斜晶系和P-1的空间群。合成化合物的胆碱酯酶抑制活性用比色Ellman法测定。化合物3H表现出良好的乙酰胆碱酯酶抑制活性(IC 50为6.72值μ M)和丁酰胆碱酯酶以上(BuChE的)的高选择性。化合物3k对IC 50表现出最佳的BuChE抑制活性为0.50μM。SAR研究表明,接头长度在确定AChE抑制活性中起着至关重要的作用,香豆素部分的结构影响了杂种的BuChE抑制活性。化合物3h的分子对接研究表明,它与AChE催化活性位点和外围阴离子位点上存在的关键氨基酸相互作用。化合物3h将是有望将AD视为AChE的选择性和双重结合位点抑制剂的候选药物。