Synthesis, Characterization and Biological Activity of Some Dithiourea Derivatives

Area of Science:

• Medicinal Chemistry
• Organic Synthesis
• Structural Biology

Background:

• Human Immunodeficiency Virus type 1 (HIV-1) protease is a critical target for antiviral therapy.
• Development of novel inhibitors is essential to combat drug resistance and improve treatment efficacy.
• Dithiourea derivatives represent a promising class of compounds for drug discovery.

Purpose of the Study:

• To design and synthesize novel dithiourea derivatives as potential HIV-1 protease inhibitors.
• To evaluate the synthesized compounds for their inhibitory activity against HIV-1 protease.
• To investigate the biological activity of these derivatives against Trypanosoma brucei.

Main Methods:

• In silico design using Autodock 4.2.
• Chemical synthesis of dithiourea derivatives.
• Characterization using spectroscopic methods and microanalysis.
• Evaluation of enzyme inhibition and cellular viability assays.
• Single crystal X-ray diffraction analysis for structural elucidation.

Main Results:

• Compound 10 exhibited significant inhibition (97.03%) against HIV-1 protease at 100 μM.
• Compounds 10 and 12 showed notable activity against Trypanosoma brucei, with percentage viabilities of 17.9 ± 5.6% and 11.2 ± 0.9%, respectively.
• Crystal structures of four dithiourea derivatives were determined, providing insights into their molecular architecture.

Conclusions:

• The designed dithiourea derivatives show promise as HIV-1 protease inhibitors.
• Compound 10 is a particularly potent inhibitor of HIV-1 protease.
• The study provides a foundation for further development of dithiourea-based antiviral and antiparasitic agents.