Comparative study on Antibacterial efficacy of a series of chromone sulfonamide derivatives against drug-resistant and MDR-isolates

Design and Synthesis of Sulfur-Containing Tetradentate Ligands for Ir-Catalyzed Asymmetric Hydrogenation of Ketones

Developing highly active and enantioselective ligands for the asymmetric hydrogenation of ketones has consistently attracted significant attention from scientists. A series of novel tetradentate sulfur-containing ligands, termed as f-thiophamidol, were successfully designed and synthesized which exhibited excellent performance in the asymmetric hydrogenation of simple ketones (up to 99% yield, 99% ee) and α-substituted β-keto sulfonamides (up to 99% yield, 99% ee, 99:1 dr). The subsequent successful gram-scale experiments with high TON demonstrated the immense potential application value of this system in synthesizing drug molecules.

Small Schiff Base Molecules-A Possible Strategy to Combat Biofilm-Related Infections

Microorganisms participating in the development of biofilms exhibit heightened resistance to antibiotic treatment, therefore infections involving biofilms have become a problem in recent years as they are more difficult to treat. Consequently, research efforts are directed towards identifying novel molecules that not only possess antimicrobial properties but also demonstrate efficacy against biofilms. While numerous investigations have focused on antimicrobial capabilities of Schiff bases, their potential as antibiofilm agents remains largely unexplored. Thus, the objective of this article is to present a comprehensive overview of the existing scientific literature pertaining to small molecules categorized as Schiff bases with antibiofilm properties. The survey involved querying four databases (Web of Science, ScienceDirect, Scopus and Reaxys). Relevant articles published in the last 10 years were selected and categorized based on the molecular structure into two groups: classical Schiff bases and oximes and hydrazones. Despite the majority of studies indicating a moderate antibiofilm potential of Schiff bases, certain compounds exhibited a noteworthy effect, underscoring the significance of considering this type of molecular modeling when seeking to develop new molecules with antibiofilm effects.