Naturally Occurring Isocyano/Isothiocyanato and Related Compounds.- 1. Introduction.- 2. Monoterpene Indole Alkaloids from Blue-Green Algae.- 3. Marine Diterpenes from Sponges.- 4. Marine Sesquiterpenes from Sponges.- 5. Uncommon Marine Analogs.- 6. Other Terrestrial Compounds.- 7. Biogenesis and Biosynthesis.- 8. Discussion and Summary.- Sulfur-Containing Amides from Glycosmis Species (Rutaceae).- I. Introduction.- 2. Isolation and Structure Elucidation.- 3. Methylthiopropenoic Acid Amides.- 4. Methylsulfinylpropenoic Acid Amides.- 5. Methylsulfonylpropenoic Acid Amides.- 6. Methylthiocarbonic Acid Amides.- 7. Synthesis of Biogenic Sulfur-Containing Amides.- 8. Biological Activity.- 9. Biosynthesis.- 10. Chemotaxonomy.- Author Index.