S-15 Synthetic Organic Chemistry: The Young Challengers   S15-1. New Reaction Systems Based on Poly(N-isopropylacrylamide)-Supported Catalysts   S15-2. Synthetic Studies on Biologically Active Compounds   S15-3. Application of the Fragment Molecular Orbital (FMO) Method to Drug Discovery. Focus on Kinase Inhibitors   S15-4. Reactions and Direct Generation of Carbon-centered Radicals   S15-5. Highly Emissive Fluorescent Molecules Based on Pyrene: Their Application to Biomolecular Probes   S15-6. An Efficient Solid Phase Synthesis for Nitrogen-containing Heterocycles   S15-7. Efficient Organic Synthesis via Nickellacycle as an Active Key Intermediate