Abstract A new series of heterobivalent tacrine derivatives were designed, synthesized and evaluated as potential multi-functional anti-Alzheimer agents for their inhibitory activity on cholinesterases, antioxidant activity and self-induced β-amyloid (Aβ) aggregation. All these synthesized compounds had potent inhibition activity on acetylcholinesterase (AChE) and butyrylcholinesterase (BuChE) at nanomolar range. A Lineweaver–Burk plot and ...