Multifunctional quinoline-based hydrazones as promising antidiabetic agents: experimental and computational insights

Area of Science:

• Medicinal Chemistry
• Pharmacology
• Drug Discovery

Background:

• Traditional antidiabetic agents often target single pathways, leading to limitations.
• Developing multifunctional agents offers a promising strategy for more effective diabetes treatment.
• Quinoline derivatives have shown potential, but exploration of novel scaffolds like hydrazones is needed.

Purpose of the Study:

• To design and synthesize novel quinoline-based hydrazone analogues.
• To evaluate their potential as multifunctional antidiabetic agents targeting α-glucosidase, α-amylase, and PPAR-γ.
• To investigate the structure-activity relationships and molecular interactions of these compounds.

Main Methods:

• Synthesis of a library of quinoline-based hydrazone analogues (7a-7j).
• In vitro enzymatic assays to determine inhibitory activity against α-glucosidase and α-amylase.
• Cell-based assays to assess PPAR-γ transcriptional activity.
• Molecular docking and dynamics simulations for in silico analysis.
• In silico ADMET prediction for pharmacokinetic properties.

Main Results:

• Compounds 7e and 7h displayed potent α-glucosidase inhibition (IC50 values in the low micromolar range), comparable to acarbose.
• Compound 7g exhibited strong α-amylase inhibition (IC50: 7.85 ± 1.92 μM).
• Compounds 7b and 7f significantly enhanced PPAR-γ transcriptional activity, suggesting insulin-sensitizing effects.
• Molecular simulations confirmed stable interactions with target proteins.
• In silico ADMET analysis indicated acceptable permeability and oral absorption, though solubility needs optimization.

Conclusions:

• Quinoline-based hydrazones represent a promising class of multifunctional antidiabetic agents.
• The designed analogues effectively inhibit key enzymes and modulate relevant pathways in diabetes.
• Further in vivo studies are warranted to explore their therapeutic potential.
• Optimization of physicochemical properties may enhance their clinical applicability.