The Explosion of Structural Information on Insect Neuropeptides.- 1. Introduction.- 2. General Methods Used for Isolation, Identification and Characterization of Insect Neuropeptides.- 3. The Insect Neuropeptides.- 4. Conclusions.- Acknowledgments.- References.- Sesquiterpenoids from Thapsia Species and Medicinal Chemistry of the Thapsigargins.- 1. Introduction.- 2. Taxonomy of Thapsia.- 3. Elucidation of the Structure of Thapsigargin.- 4. Proazulenic Slovanolides.- 5. Non-lactonic Sesquiterpenoids from Thapsia.- 6. Pharmacological Activity of the Thapsigargins.- 7. Molecular Pharmacology.- 8. Chemistry of Thapsigargin.- 9. Structure Activity Relationships.- 10. Metabolic Catabolism of Thapsigargin.- References.- Pregnane Glycosides.- 1. Introduction.- 2. Isolation and Identification.- 3. Structure Elucidation.- 4. Pregnane Aglycons.- 5. Sugars of Pregnane Glycosides.- 6. Biosynthesis of Pregnane Glycosides.- 7. Biological Activity.- Acknowledgement.- References.- Author Index.