主题词：Synthesis and biological activity; Enzyme function and inhibition; Cholinesterase and Neurodegenerative Diseases; Synthesis and Catalytic Reactions; Computational Drug Discovery Methods; Synthesis and Biological Evaluation; Phenothiazines and Benzothiazines Synthesis and Activities; Cancer therapeutics and mechanisms; Click Chemistry and Applications; Bioactive Compounds and Antitumor Agents; Quinazolinone synthesis and applications; Metal complexes synthesis and properties; Synthesis and Characterization of Heterocyclic Compounds; Chemical Reactions and Mechanisms; Phytochemicals and Antioxidant Activities; Peptidase Inhibition and Analysis; Biochemical and Molecular Research; Free Radicals and Antioxidants; Natural product bioactivities and synthesis; Research on Leishmaniasis Studies; HIV/AIDS drug development and treatment; melanin and skin pigmentation; Natural Antidiabetic Agents Studies; Protein Degradation and Inhibitors; Carbohydrate Chemistry and Synthesis