High-Pressure Synthesis of Heterocycles Related to Bioactive Molecules -- Ring Transformation of Nitropyrimidinone Leading to Versatile Azaheterocyclic Compounds -- Synthesis of Thalidomide -- Rational Drug Design of ? Opioid Receptor Agonist TAN-67 from ? Opioid Receptor Antagonist NTI -- Tetrahydrobiopterin and Related Biologically Important Pterins -- Preparation, Structure, and Biological Properties of Phosphorus Heterocycles with a C?–?P Ring System -- The Role of the Membrane Actions of Phenothiazines and Flavonoids as Functional Modulators.