Synthesis of 4-[(diethylamino)methyl]-phenol derivatives as novel cholinesterase inhibitors with selectivity towards butyrylcholinesterase
作者:Liang Yu、Rihui Cao、Wei Yi、Qin Yan、Zhiyong Chen、Lin Ma、Wenlie Peng、Huacan Song
DOI:10.1016/j.bmcl.2010.04.059
日期:2010.6
A series of novel cholinesterase inhibitors, being composed of 4-[(diethylamino) methyl]-phenoxy and secondary amine which were linked with a different length alkyl chain, were designed and synthesized from the starting material p-hydroxybenzaldehyde. These compounds were evaluated as acetylcholinesterase and butyrylcholinesterase (AChE/BChE) inhibitors. Compounds 25-31 having a secondary amine moiety connected to the phenyl ring via eight CH2 units spacer were found to be the most potent inhibitors with IC50 value lower than 220 nM and 48 nM against AChE and BChE, respectively. Interestingly, these inhibitors showed a surprising selectively toward BChE, and compounds 26, 27, and 30 displayed 12.5, 18.6, and 18.8-fold higher affinity to BChE. The inhibition kinetics analyzed by Linewear-Burk plots revealed that such compounds were mix-type inhibitors. (C) 2010 Elsevier Ltd. All rights reserved.