Fortschritte der Chemie Organischer Naturstoffe / Progress in the Chemistry of Organic Natural Products [Paperback]

/ Contents.- Recent Developments in the Chemistry of Penicillins.- I. Introduction.- II. Nomenclature.- III. Reactions at the ?-Lactam Ring.- IV. Reactions at the Thiazolidine Ring.- V. Conclusion.- References.- The Antibiotic Complex of the Verrucarins and Roridins.- I. Introduction.- II. Production and Isolation.- III. Structure and Chemical Transformations.- IV. Total Synthesis.- V. Methods of Assay.- VI. Biosynthesis.- VII. Biological Activity.- Acknowledgement.- References.- Aflatoxins and Sterigmatocystins.- I. Introduction.- II. Isolation and Characterisation of the Mycotoxins.- III. Structural Elucidation of the Mycotoxins.- IV. Synthesis of the (?)-Forms of the Mycotoxins and of Related Compounds.- V. Biogenesis of the Mycotoxins.- VI. Conclusion.- References.- Flavonoid-Glykoside.- I. Strukturtypen von Flavonoid-O-Glykosiden und ihre Verbreitung.- II. Flavonoid-C-Glykoside.- III. Synthese von Flavonoidglykosiden.- Addenda.- Biogenetic-Type Syntheses of Polyketide Metabolites.- I. Introduction.- II. Early Studies.- III. Modern Concepts of Polyketide Biosynthesis.- IV. Experimental Support for the Polyketide Theory.- V. Syntheses of ?-Polycarbonyl Compounds.- VI. Cyclizations of ?-Polycarbonyl Compounds.- VII. Conclusions.- References.- The Chemistry of Spiro[4.5]Decane Sesquiterpenes.- A. Introduction.- B. The Acoranes and Alaskanes.- C. The Spirovetivanes.- D. Biogenetic Considerations.- E. Tables of Naturally Occurring Spiro[4.5]Decanes.- Addendum.- References.- Phorbolesters  the Irritants and Cocarcinogens of Croton Tiglium L..- 1. Introduction.- 2. Fractionation of Croton Oil.- 3. Chemistry of Phorbol and of the Croton Oil Factors.- 4. Further Diterpenes and Diterpene Esters from Croton Oil.- 5. On the Biological Activities of the IsolatedDiterpenes and their Esters.- 6. Conclusions and Perspectives.- References.- Stereoselektive Totalsynthese von Indolalkaloiden..- Structure, Chemistry, and Biosynthesis of the Melanins..- I. Introduction.- II. EnzymilÂ