Triorganotin compounds as antimicrobial agents.

Area of Science:

• Organometallic Chemistry
• Microbiology
• Medicinal Chemistry

Background:

• Triorganotin compounds are known for their diverse biological activities.
• Thiol derivatives of heterocyclic compounds like benzoxazole and benzothiazole, as well as lupinane, are potential ligands for metal complexes.
• Exploring novel organometallic structures for antimicrobial applications is an ongoing area of research.

Purpose of the Study:

• To synthesize novel triorganotin derivatives incorporating thiol-containing ligands.
• To evaluate the antimicrobial efficacy of these synthesized compounds against a panel of bacteria, fungi, and protozoa.
• To investigate the structure-activity relationship of these organotin compounds.

Main Methods:

• Synthesis of six triorganotin derivatives using thiolupinine, 2-mercaptobenzoxazole, and 2-mercaptobenzothiazole.
• Antimicrobial susceptibility testing against various bacterial, fungal, and protozoan strains.
• Preparation and testing of a control triethylgermanium compound.

Main Results:

• Most synthesized triorganotin compounds demonstrated significant antimicrobial activity.
• Triethyltin lupinylsulfide exhibited notable efficacy, particularly against Gram-negative bacterial strains.
• The analogous triethylgermanium lupinylsulfide compound showed no antimicrobial activity across the tested microorganisms.

Conclusions:

• The synthesized triorganotin derivatives possess promising antimicrobial properties.
• Triethyltin lupinylsulfide is a potent candidate for further development against Gram-negative infections.
• The presence of tin, compared to germanium, is crucial for the observed antimicrobial activity in these lupinylsulfide derivatives.