Title: Synthesis and evaluation of tacrine-E2020 hybrids as acetylcholinesterase inhibitors for the treatment of Alzheimer's disease Shao D, Zou C, Luo C, Tang X, Li Y Ref: Bioorganic & Medicinal Chemistry Lett, 14:4639, 2004 : PubMed
Tacrine-E2020 hybrids and some related compounds were prepared and their bioactivities on the Alzheimer's disease were assayed. The optimum hybrid inhibitor 3 is 37-fold more potent and 31-fold more selective than tacrine in vitro.