Structure−Activity Relationships of Acetylcholinesterase Noncovalent Inhibitors Based on a Polyamine Backbone. 3. Effect of Replacing the Inner Polymethylene Chain with Cyclic Moieties
whether 2, 3, 4, and 8 inhibit AChE-induced Abeta aggregation. Although all four derivatives caused a mixed type of AChE inhibition (active site and PAS), only 4 and 8, which bear an inner constrained spacer, were able to inhibit AChE-induced Abeta aggregation to a greater extent than donepezil. Clearly, the ability of an AChE inhibitor, based on a linear polyaminebackbone, to bind both AChE sites