Piperonal-derived Schiff base molecules as potential multi-target therapeutic agents against Alzheimer's and diabetes
Abstract
Background: The dual burden of diabetes and Alzheimer's highlights the urgent need for multifunctional therapeutic agents. This study explores piperonal-derived Schiff base derivatives as potential dual-action enzyme inhibitors against α-amylase (AA), α-glucosidase (AG), acetylcholinesterase (AChE), and butyrylcholinesterase (BChE), offers a promising strategy for managing both conditions.
Methods: Schiff base derivatives of piperonal (heliotropin) were synthesized, structurally characterized, and explored against established drug targets of diabetes mellitus (DM) and Alzheimer's disease (AD).
Results: Compounds 7 (IC50 = 5.73 ± 0.01; 3.52 ± 0.02 µM) and 17 (IC50 = 10.91 ± 0.02; 7.38 ± 0.02 µM) showed potent inhibitory effects against AG and AA enzymes, in comparison to acarbose (IC50 = 14.98 ± 0.02 µM; 14.64 ± 0.02 µM). However, analogs 7, 9, 10, 14, and 15, compounds 7 (IC50 = 2.92 ± 0.02; 3.34 ± 0.02 µM) and 9 (IC50 = 8.16 ± 0.03; 7.19 ± 0.03 µM) showed remarkable inhibitory results against AChE and BChE, respectively, compared to standard donepezil chloride (IC50 = 37.89 ± 0.02 µM; 41.56 ± 0.03 µM). Comprehensive kinetic analyses and molecular docking supported findings by in vitro studies. Synthesized derivatives were also checked for their antioxidant potential and demonstrated significant activity.
Conclusion: These complementary studies highlight several hit candidates for further development as therapeutic agents against DM and AD.
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