Novel Cinnamaldehyde Hydrazones: Design, In Silico Evaluation, Synthesis, and Cytotoxic Activity.

Area of Science:

• Medicinal Chemistry
• Organic Synthesis
• Pharmacology

Background:

• Cinnamaldehyde's biological activities and versatile scaffold enable the design of novel hydrazone derivatives.
• Hydrazone derivatives offer potential for improved pharmacological properties.
• The α,β-unsaturated aldehyde moiety is key for derivatization.

Purpose of the Study:

• Synthesize and evaluate novel cinnamaldehyde-based hydrazones for anticancer activity.
• Assess in silico physicochemical, pharmacokinetic, and drug-likeness properties.
• Identify structure-activity relationships for optimized anticancer drug design.

Main Methods:

• Eight cinnamaldehyde hydrazones synthesized via one-step condensation.
• In silico analysis of ADME, lead-likeness, and drug-likeness using SwissADME and other software.
• Structural characterization (IR, NMR, HR ESI-MS) and in vitro cytotoxic evaluation (MTT assay).

Main Results:

• All synthesized compounds displayed favorable lead-like characteristics and predicted ADME profiles.
• Moderate, structure-dependent antiproliferative activity observed with cell line selectivity.
• Compound CA8 exhibited potent cytotoxicity against KE-37 leukemia cells (IC50 = 20.3 μM), comparable to melphalan, with high selectivity.

Conclusions:

• Cinnamaldehyde hydrazones represent a promising scaffold for anticancer drug development.
• Amino substituents on the hydrazone derivatives enhance cytotoxic potency and selectivity.
• Further structural optimization of these compounds is warranted for therapeutic advancement.