Antimalarial Drugs in Current Use.- 1 4-Aminoquinolines.- A. Introduction.- I. History.- II. Treatment of Rheumatoid Arthritis.- B. Structure, Antimalarial Activity and Toxicity.- I. Compounds Considered.- II. Structure-Activity Relationships.- III. Oral and Parenteral Toxicity.- C. Methods of Analysis.- I. Induced Fluorescence.- II. Spectrophotofluorometry.- III. Gas-Liquid Chromatography.- IV. Spectrophotometry.- D. Metabolism.- I. General Considerations.- II. Absorption.- III. Tissue Distribution.- IV. Localisation of 4-Aminoquinolines Within Organs.- V. Biotransformation.- E. Pharmacokinetics.- I. Plasma Half-lives.- II. Pharmacokinetic Constants.- F. Modes of Action.- I. Introduction.- II. The Ferriprotoporphyrin IX Drug Complex.- III. Inhibition of Lysosomal Function.- IV. Binding to Major Cellular Constituents.- G. Drug Resistance.- References.- 2 Quinine and Quinine Analogues.- A. Introduction.- I. Scope of the Chapter; Literature Review.- II. Historical Review.- B. Chemistry.- I. Occurrence.- II. Structure.- III. Analytical Methods.- C. Mode of Action.- I. Activity.- II. Structure-Activity Relationships.- III. Molecular Pharmacology.- D. Pharmacokinetics and Metabolism.- I. Pharmacokinetics.- II. Metabolism.- E. Toxicity.- I. Introduction.- II. Animal Tolerance.- III. Human Tolerance.- F. Deployment.- I. Antimalarial Activity in Man.- II. Use of Quinine as an Antimalarial Agent.- G. Drug Resistance.- I. Production of Resistance in Animals.- II. Resistance in Man.- H. Conclusion.- References.- 3 8-Aminoquinolines.- A. Introduction.- B. Chemistry.- I. Introduction.- II. Structure.- III. Assay Methods.- C. Modes of Action.- I. Introduction.- II. Radical Cure and Prevention of Relapses; Deployment.- III. Causal Prophylaxis.- IV. Gametocytocidal and Sporontocidal Effects of Primaquine.- V. Summary of Modes of Action.- D. Pharmacokinetics and Metabolism.- E. Toxicity.- I. Introduction.- II. Neurotoxicity.- III. General Toxicity of the Pamaquine Type.- IV. Primaquine-Induced Haemolytic Anaemia, G6PD Deficiency and Malaria.- V. Isomerism.- F. Drug Resistance.- References.- 4 Sulphonamides and Sulphones.- A. Introduction.- B. Chemistry.- I. Structure.- II. Physicochemical Properties.- III. Assay Methods.- C. Mode of Action.- I. Bacteria.- II. Plasmodia.- III. Stages of Plasmodia Influenced.- D. Human Pharmacokinetics and Metabolism.- I. Sulphonamides.- II. Sulphones.- E. Toxicity.- I. Sulphonamides.- II. Sulphones.- F. Chemotherapy in Experimental Models.- I. Activity Against Non-Human Plasmodia.- II. Activity on Human Plasmodia in Monkeys and in Insect Vectors.- G. Deployment in Man.- I. Sulphonamides.- II. Sulphones.- H. Drug Resistance.- I. Experimental Resistance in Non-Human Plasmodia.- II. Resistance to Sulphonamides and Sulphones in Human Plasmodia.- J. Role of Sulphonamides and Sulphones as Antimalarials.- References.- 5 Dihydrofolate Reductase Inhibitors.- A. Introduction.- B. Proguanil (Chlorguanide).- I. Chemistry and Assay.- II. Metabolism and Pharmacokinetics.- III. Toxicity.- IV. Mode of Action.- V. Deployment.- VI. Resistance.- C. Pyrimethamine.- I. Chemistry and Assay.- II. Metabolism and Pharmacokinetics.- III. Toxicity.- IV. Mode of Action.- V. Deployment.- VI. Resistance.- References.- Novel Methods of Drug Development.- 6 Drug Combinations.- A. Introduction.- B. Complementary Combinations.- I. Drugs Affecting Different Stages of the Life Cycle.- II. Drugs Affecting the Same Stages of the Life Cycle.- C. Additive Combinations.- D. Potentiating Combinations.- I. Compounds Acting on Folate Pathways.- II. Other Compounds.- E. Conclusion.- References.- 7 Repository Preparations.- A. Introduction.- I. The Need.- II. Attributes of a Repository Preparation.- B. Approaches to Repository Antimalarial Drugs.- I. Tissue-Held Drugs.- II. Drugs Incorporated in Polymers and in Physical Devices.- III. Poorly Soluble Salts and Derivatives.- C. Laboratory Test Methods.- I. Biological Response.- II. Rate of Release Studies.- D. Major Types of Drugs Investigated.- I. 4-Aminoquinolines.- II. Quinolinemethanols.- III. Cycloguanil Pamoate.- IV. Pyrimethamine Pamoate.- V. 2,4-Diamino-6-(2-Naphthylsulphonyl)Quinazoline (WR 158122).- E. Closing Comments.- References.- 8 Cell Targeting of Primaquine.- A. Introduction.- B. Chemotherapy Methods.- I. Experimental Malaria Infection.- II. Chemotherapeutic and Toxicity Parameters.- III. Primaquine.- C. Primaquine Entrapped in Liposomes.- I. Preparation of Primaquine Liposomes.- II. Toxicity and Therapeutic Activity.- III. Pharmacokinetics and Tissue Distribution.- IV. Discussion.- D. Primaquine Linked to Asialofetuin.- I. Amino Acid and Peptide Derivatives of Primaquine.- II. Asialofetuin-Primaquine Conjugates.- E. Conclusions.- References.- Recent Developments in Antimalarials.- 9 Drugs with Quinine-like Action.- A. Introduction.- B. Quinolinemethanols.- I. WR 30090.- II. Mefloquine.- III. WR 184806.- IV. WR 226253.- C. Phenanthrenemethanols.- I. WR 33063.- II. WR 122455.- III. Halofantrine.- D. Pyridinemethanols.- I. WR 180409.- II. WR 172435.- E. Conclusions.- References.- 10 8-Aminoquinolines.- A. Introduction.- B. Recent Research.- C. Toxicology.- D. Summary.- E. Conclusions.- References.- 11 Lapinone, Menoctone, Hydroxyquinolinequinones and Similar Structures.- A. Introduction.- B. Chemistry.- I. Structure-Activity Relationships.- II. Assay Methods.- C. Modes of Action.- D. Pharmacokinetics and Metabolism.- E. Toxicity.- F. Deployment.- G. Drug Resistance.- H. Future Prospects.- References.- 12 4-Aminoquinolines and Mannich Bases.- A. Introduction.- B. 4-Aminoquinolines.- I. Exploratory Work.- II. Molecular Biology.- III. Quantitative Structure-Activity Relationships.- IV. Primate Studies.- V. Clinical Studies.- C. Mannich Bases.- I. Exploratory Work.- II. Molecular Biology.- III. Primate Studies.- IV. Toxicology.- D. Conclusions.- References.- 13 Triazines, Quinazolines and Related Dihydrofolate Reductase Inhibitors.- A. General Introduction.- B. Dihydrotriazines.- I. Introduction.- II. Chemistry.- III. Structure-Activity Relationships.- IV. Clinical Properties.- V. Pharmacology.- VI. Other Biological Activities Shown by Dihydrotriazines.- C. Quinazoline and Related Dihydrofolate Reductase Inhibitors.- I. 2,4-Diaminoquinazolines.- II. Ring Aza Analogues.- References.- 14 Antibiotics.- A. Introduction.- B. Chemistry.- I. Tetracyclines.- II. Clindamycin (7-Chlorolincomycin).- C. Modes of Action.- I. Tetracyclines.- II. Clindamycin.- D. Pharmacokinetics and Metabolism.- I. Tetracyclines.- II. Clindamycin.- E. Toxicity.- I. Tetracyclines.- II. Clindamycin.- F. Deployment.- I. Treatment of Multidrug-Resistant Infections of P. falciparum.- II. Prophylaxis Against Multidrug-Resistant P. falciparum.- G. Drug Resistance.- References.- 15 Miscellaneous Compounds.- A. Introduction.- B. Established Series with Antimalarial Activity.- I. Amidinoureas.- II. Amidines.- III. Biguanides.- IV. Hydroxamic Acids.- V. Oxa- and Thiadiazoles.- VI. Quinolines and Deazaquinolines.- VII. Pyrocatechols, RC-12.- VIII. Tetrahydrofurans.- C. Recently Described Antimalarial Series.- I. Benzo(g)quinolines.- II. Clopidol.- III. Diazafluorenones.- IV. Floxacrine, Malaridine.- V. Indolo(3,2-c)quinolines.- VI. Nitroheterocycles.- VII. Oxadiazoles.- VIII. Oxazolines.- IX. Peptides, Amino Acids and Purines.- X. Plant Extracts.- XI. Pyrazoles.- XII. Pyridyl-?-toluene Sulphonates.- XIII. Riboflavin.- XIV. Robenidine.- XV. Tetrazines.- XVI. Thienopyrimidines.- XVII. Thiopyrans.- XVIII. Thiosemicarbazones and Sulphides.- References.- Prevention of Drug Resistance.- 16 Use of Drug Combinations.- A. Introduction.- B. Drugs with Additive Effects.- I. Combinations with Mepacrine.- II. Combinations with Sulphonamides or Dihydrofolate Reductase Inhibitors.- C. Potentiating Combinations.- D. The Use of Triple Combinations.- I. For the Control of Mixed P. falciparum—P. vivax Populations.- II. For the Protection of Existing and New Antimalarials.- E. Conclusion.- References.