Synthesis and biological evaluation of novel <i>N</i>,<i>N</i>′-bis-methylenedioxybenzyl-alkylenediamines as bivalent anti-Alzheimer disease ligands
作者:Wen Luo、Yan-Ping Li、Jia-Heng Tan、Lian-Quan Gu、Zhi-Shu Huang
DOI:10.3109/14756366.2010.548329
日期:2011.10.1
A novel series of N,N'-bis-methylenedioxybenzyl-alkylenediamines 5a-5g have been designed, synthesized and evaluated as bivalent anti-Alzheimer's disease ligands. The enzyme inhibition assay results indicated that compounds 5e-5g inhibit both acetylcholinesterase (AChE) and butyrylcholinesterase (BuChE) in the micromolar range (IC50, 2.76-4.24 mu M for AChE and 3.02-5.14 mu M for BuChE), which was in the same potential as the reference compound rivastigmine (IC50, 5.50 mu M for AChE and 1.60 mu M for BuChE). It was found that compounds could bind simultaneously to the peripheral and catalytic sites of AChE. beta-Amyloid (A beta) aggregation inhibition assay results showed that compound 5e exhibited highest self-mediated A beta fibril aggregation inhibition activity (40.3%) with a similar potential as curcumin (41.6%). It was also found that 5e-5g did not affect neuroblastoma cell viability at the concentration of 50 mu M.