Cover -- Contents -- Foreword -- Preface -- Contributors -- Chapter 1. Acid-catalysed epimerization of bioactive indole alkaloids and their derivatives -- Chapter 2. Antitumor-promoting and anti-inflammatory activities of triterpenoids and sterols fiom plants and fungi -- Chapter 3. Bioactive oleanene glucuronides obtained from fabaceous plants -- Chapter 4. Biotransformation of terpenoids by microorganisms -- Chapter 5. Cycloartane and oleanane saponins from Astragalus sp. -- Chapter 6. Labdane-type diterpenes: Chemistry and biological activity -- Chapter 7. Metabolism of the tomato saponin a-tomatine by phytopathogenic fungi -- Chapter 8. Heme aggregation inhibitors: Antimalarial drugs targeting an essential biomineralization process -- Chapter 9. Bioactive peptides as signal molecules in plant defense, growth and development -- Chapter 10. Enzymes involved in the biosynthesis of brassinosteroids -- Chapter 11. Immunopotentiating effects of a glycoprotein from Chlorella vulgaris strain CK and its characteristics -- Chapter 12. Hepatoprotective effect of plant components: Inhibition of tumor necrosis Factor-a-dependent inflammatory liver -- Chapter 13. Induction and regulation of biosynthetic activity of phytoalexin in carrot cells -- Chapter 14. Inhibition of Eukaryote Signal Transduction Components by Plant Defensive Secondary Metabolites -- Chapter 15. Flavonoids and cardiovascular diseases -- Chapter 16. Effects of flavonoids on gastrointestinal disorders -- Chapter 17. Bioactivity of the phenolic compounds in higher plants -- Chapter 18. Bioactive natural products from marine sources -- Chapter 19. Biological activities of natural halogen compounds -- Chapter 20. Marine sulfur-containing natural products -- Chapter 21. Absorption, metabolism and biological activities of chlorogenic acids and related compounds -- Chapter 22. Effects of ethanol extract of Crocus sativus L. and its components on learning behavior and long-term potentiation -- Subject Index -- Last Page.