Table of Contents

Molecular Rings Studded with Jewels. Why Nature Prefers Heterocycles. Heterocycles and Hereditary Information. Enzymes, Coenzymes and Vitamins. Heterocycles and Bioenergetics. Heterocycles and Photosynthesis. Heterocycles and Health. Heterocycles in Agriculture. Heterocycles in Industry and Technology. Modern Trends and Prospects of Development. The Origin of Heterocycles. Conclusion. Answers and References to Selected Problems. Index.