主题词：Chemical Synthesis and Analysis; Synthesis and biological activity; Receptor Mechanisms and Signaling; Synthesis and Biological Evaluation; Click Chemistry and Applications; Cancer therapeutics and mechanisms; HIV/AIDS drug development and treatment; Diverse Scientific and Economic Studies; Carbohydrate Chemistry and Synthesis; Peptidase Inhibition and Analysis; Bioactive Compounds and Antitumor Agents; Computational Drug Discovery Methods; Neuropeptides and Animal Physiology; Biochemical and Molecular Research; Human auditory perception and evaluation; DNA and Nucleic Acid Chemistry; Neuroscience and Neuropharmacology Research; Quinazolinone synthesis and applications; Pharmacological Receptor Mechanisms and Effects; Advanced biosensing and bioanalysis techniques; Educational Robotics and Engineering; Phenothiazines and Benzothiazines Synthesis and Activities; Microbial Natural Products and Biosynthesis; Cholinesterase and Neurodegenerative Diseases; Natural product bioactivities and synthesis