Contents Foreword Preface 1.Bioactive Metabolites of Marine Algae, Fungi and bacteria 1 Introduction 1 2.Secondary Metabolites of Marine Algae 2 3.2 Brominated oxygen heterocyclics 3 3.3 Nitrogen heterocyclics 4 atives 5 3.6 Phenazine derivatives6 3.Sulfated polysaccharides9 4.Marine Bacteria and Fungi 13 5.Micro Algae 17 6.Concluding Remarks 18 References 10 2.Bioactive Metabolites of Marine Invertebrates 26 1.Introduction 26 2.Bioactive Metabolites 26 2.1 Steroids 26 2.4 Prostaglandins 31 Contents Foreword v Preface vii 1. Bioactive Metabolites of Marine Algae, Fungi and Bacteria 1 1. Introduction 1 2. Secondary Metabolites of Marine Algae 2 3. Bioactive Metabolites 2 3.1 Brominated phenols 2 3.2 Brominated oxygen heterocyclics 3 3.3 Nitrogen heterocyclics 4 3.4 Kainic acids 4 3.5 Guanidine derivatives 5 3.6 Phenazine derivatives 6 3.7 Amino acids and amines 7 3.8 Sterols 8 3.9 Sulfated polysaccharides 9 4. Marine Bacteria and Fungi 13 5. Micro Algae 17 6. Concluding Remarks 18 References 19 2. Bioactive Metabolites of Marine Invertebrates 26 1. Introduction 26 2. Bioactive Metabolites 26 2.1 Steroids 26 2.2 Terpenoids 30 2.3 Isoprenoids 31 2.4 Prostaglandins 31 2.5 Quinones 32 2.6 Brominated compounds 32