Sonochemical Synthesis of Natural Products and Heterocycles of Pharmaceutical Importance: Strategy Towards a Sustainable Society comprehensively summarizes of sonochemistry and ultrasound and their applicability to synthetic organic chemistry. Ultrasound has emerged as a potent activation technique for the development of low cost, efficient, and sustainable methodologies for the synthesis of natural products and heterocycles. Chapters demonstrate the application of sonochemistry to synthesizing molecules of natural origin, organic compounds containing N-heterocycles, O-heterocycles, and S-heterocycles, and the total synthesis and semisynthesis of bioactive compounds under ultrasonication through case studies, and detailed illustrations and methodologies. Sonochemical organic synthesis under solvent- and catalyst-free conditions and in an aqueous medium as a green solvent, use of nanoparticles as efficient catalysts, and green routes for drug design and synthesis using ultrasound, and their application in pharmaceutical and environmental chemistry are also explored. Sonochemical Synthesis of Natural Products and Heterocycles of Pharmaceutical Importance: Strategy Towards a Sustainable Society is a valuable resource for organic synthesis experts, specialists in natural products, advocates for sustainable chemistry and researchers and professionals working in total synthesis, semisynthesis, organic synthesis, and medicinal chemistry and pharmaceutical industries.