Fortschritte Der Chemie Organischer Naturstoffe / Progress in the Chemistry of Organic Natural Products

ISBN-13: 9783709192832 / Angielski / Miękka / 2012 / 216 str.

J. Cardenas; B. Esquivel; M. Gupta

Opis

Contents: A.B. Ray and M. Gupta: Withasteroids, a Growing Group of Naturally Occurring Steroidal Lactones. L. Rodriguez-Hahn, B. Esquivel, and J. Cardenas: Clerodane Diterpenes in Labiatae. Author Index. Subject Index. The volumes of this classic series, now referred to simply as "Zechmeister" after its founder, L. Zechmeister, have appeared under the Springer Imprint ever since the series' inauguration in 1938. The volumes contain contributions on various topics related to the origin, distribution, chemistry, synthesis, biochemistry, function or use of various classes of naturally occurring substances ranging from small molecules to biopolymers. Each contribution is written by a recognized authority in his field and provides a comprehensive and up-to-date review of the topic in question. Addressed to biologists, technologists, and chemists alike, the series can be used by the expert as a source of information and literature citations and by the non-expert as a means of orientation in a rapidly developing discipline.

Spis treści

Withasteroids, a Growing Group of Naturally Occurring Steroidal Lactones.- I. Introduction.- A. Features of Withasteroids and Their Classification.- B. Distribution of Withasteroids.- II. Structure Elucidation Methods.- A. Physical Methods.- 1. Ultraviolet Absorption Spectra.- 2. Infrared Spectra.- 3. Nuclear Magnetic Resonance Spectra.- (a) 1H-NMR Spectra.- (b) 13C-NMR Spectra.- 4. Mass Spectra.- 5. Circular Dichroism Spectra.- 6. X-Ray Crystallographic Methods.- B. Degradative Reactions.- C. Chemical Transformations.- D. Synthesis of Withanolides.- III. Biogenesis and Biosynthesis of Withasteroids.- IV. Chemotypes and Chemogenetics.- V. Biological Activity of Withasteroids.- VI. Chemistry of Withasteroids.- A. Withanolides.- 1. Minabeolides.- 2. Withametelin, Isowithametelin, Secowithametelin and Withametelin B.- 3. Daturataturins A and B.- 4. Withasomniferin A and 5-Dehydroxywithanolide R.- 5. Daturametelins D, E, F and G.- 6. Withacoagin.- 7. Sominone and Sominolide.- 8. Withanolide Y.- 9. Withaperuvin H.- 10. Physagulin C.- 11. Jaborosalactol M and Jaborosalactone M.- 12. Jaboromagellone.- B. Ring A Aromatic Withanolides.- 1. Jaborol.- 2. Jaborosalactone Q.- C. Ring D Aromatic Withanolide.- 1. Salpichrolide A.- D. Ixocarpalactones.- 1. Trechonolide A.- 2. Jaborosalactone P.- 3. Taccalonolides A and B.- E. Physalins.- 1. Physalins L and M.- F. Acnistins.- 1. Tubocaposides A and B.- Addendum.- Structure Formulas.- References.- Clerodane Diterpenes in Labiatae.- I. Introduction.- II. Clerodane Diterpenes.- 1. Ajuga Species.- 2. Scutellaria Species.- 3. Teucrium Species.- Absolute Stereochemistry of Clerodane Diterpenoids from Teucrium Species.- 4. Salvia Species.- 5. Leonurus and Stachys Species.- III. Biological Activity.- Acknowledgement.- Table I. Distribution of Clerodane Diterpenoids in Teucrium sp.- Addendum.- References.- Author Index.