China; 3. Key Laboratory of Natural Medicine and Immuno-Engineering, Henan University, Kaifeng 475004, China) Abstract: A series of tacrine-phenol-bifendate hybrids (7a-7e, 8a-8e) were designed, synthesized and evaluated as inhibitors of cholinesterases (ChEs) with low hepatotoxicity. All the compounds had potent ChEs inhibitory activity with half-inhibitory concentration (IC50) values at the nanomolar range. Compound 8d exhibited the strongest inhibition to -1 acetylcholinesterase (AChE) with an IC50 value of nmol·L and compound 7b showed