Synthetic strategies and medicinal perspectives of 4-thiazolidinones: Recent developments and structure-activity relationship studies

The 4-thiazolidinone moiety is a privileged scaffold showing diversity in biological responses like antiinflammatory, antidiabetic, anticancer, antitubercular, anesthetic, hypnotic, antiviral and many more. As a result of this, researchers have been studying and synthesizing this class of heterocycles through several simple as well as complex pathways as the target scaffold for biological studies. This review recapitulates the recent advances in the chemical and biological activities of 4-thiazolidinones that have proved to be of immense importance in the discovery and development of several molecules and, thereby, the treatment of many ailments. This study will add to previously published reviews by examining the research on various biological activities of 4-thiazolidinones, including patents, with a focus on structure-activity relationship (SAR) investigations. Literature and patents emphasizing synthetic schemes and biological activities of 4-thiazolidinones have covered the data in the last decade. Here, sufficient efforts have been put into place to compile the synthetic strategies, establish SARs and enlist various patents so far for this fantastic molecule. The facile synthetic schemes and a vast range of biological activity profiles possessed by this nucleus may provide researchers with new opportunities toward novel therapeutics.