The pathogenesis of Alzheimer's disease (AD) is complex, and developing a multi-target-directed-ligand could be an effective therapeutic strategy. This study successfully synthesized compound 1c, which has inhibitory activity against AChE, BACE1, and GSK3β. Compound 1c showed good blood-brain barrier penetrability, suitable bioavailability, and oral safety. Furthermore, it improved impaired learning and memory in Aβ-induced AD mice. This research provides a potential new strategy for AD treatment.
The pathogenesis of Alzheimer's disease (AD) is very complex, and there are many hypotheses. Therefore, the development of a multi-target-directed-ligand may be an effective therapeutic strategy. Our previous study showed that notopterol (a natural product from Notopterygium) is a dual BACE1/GSK3 beta inhibitor. In this study, we designed and synthesized 48 notopterol derivatives with furacoumarin as a scaffold in order to enhance their balanced AChE/BACE1/GSK3 beta inhibitory activity. Fortunately, 1c showed effective inhibitory activity against AChE (58.7% at 1.0 mu M), BACE1 (48.3% at 20 mu M), and GSK3 beta(40.3% at 10 mu M). Furthermore, 1c showed good blood-brain barrier penetrability, suitable bioavailability, and oral safety. More importantly, 1c could ameliorate the impaired learning and memory in A beta-induced AD mice. In conclusion, we reported the triple inhibitor of AChE/BACE1/GSK3 beta lead compounds based on a furocoumarin scaffold of notopterol for the first time, which provides a potential new strategy for the treatment of AD.
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