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Author : Solomon Samuel Klioze
Publisher :
ISBN 13 :
Total Pages : 226 pages
Book Rating : 4.:/5 (8 download)
Download or read book Approaches to the Total Synthesis of Vindoline written by Solomon Samuel Klioze and published by . This book was released on 1972 with total page 226 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Daisuke Kato
Publisher :
ISBN 13 : 9781124738796
Total Pages : 238 pages
Book Rating : 4.7/5 (387 download)
Download or read book Asymmetric Total Synthesis of Vindorosine, Vindoline, and Key Vinblastine Analogues written by Daisuke Kato and published by . This book was released on 2011 with total page 238 pages. Available in PDF, EPUB and Kindle. Book excerpt: Concise asymmetric total syntheses of vindoline (1) and vindorosine (2) are detailed based on a unique intramolecular [4+2]/[3+2] cycloaddition cascade of 1,3,4-oxadiazoles inspired by the natural product structures. A chiral substituent on the tether linking the dienophile and oxadiazole was used to control the facial selectivity of the initiating Diels-Alder reaction and set the absolute stereochemistry of the remaining six stereocenters in the cascade cycloadduct. This key reaction introduced three rings and four C-C bonds central to the pentacyclic ring system setting all six stereocenters and introducing essentially all the functionality found in the natural products in a single step. Implementation of the approach for the synthesis of 1 and 2 required the development of a ring expansion reaction to provide a 6-membered ring suitably functionalized for introduction of the [delta] 6,7 -double bond found in the core structure of the natural products. Two unique approaches were developed that defined our use of a protected hydroxymethyl group as the substituent that controls the stereochemical course of the cycloaddition cascade. In the course of these studies, several analogues of vindoline were prepared containing deep-seated structural changes presently accessible only by total synthesis. These analogues, bearing key modifications at C6-C8, were incorporated into vinblastine analogues and used to probe the unusual importance (100-fold) and define the potential role of the vinblastine [delta] 6,7 -double bond.
Author : Chin-Kang Sha
Publisher :
ISBN 13 :
Total Pages : 366 pages
Book Rating : 4.E/5 ( download)
Download or read book Approaches to a Total Synthesis of the Aspidosperma Alkaloid Vindoline written by Chin-Kang Sha and published by . This book was released on 1981 with total page 366 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Miguel A. Sierra
Publisher : John Wiley & Sons
ISBN 13 : 352765464X
Total Pages : 297 pages
Book Rating : 4.5/5 (276 download)
Download or read book More Dead Ends and Detours written by Miguel A. Sierra and published by John Wiley & Sons. This book was released on 2013-07-11 with total page 297 pages. Available in PDF, EPUB and Kindle. Book excerpt: Success comes in many forms and in synthesis it can be a failure that results in their ultimate successful solutions. This long-awaited sequel to "Dead Ends and Detours" retains the proven concept while featuring over 20 new case studies of failed strategies and their (successful) solutions in natural product total synthesis. Additionally, computational models are used to discuss the problem in much more detail and to provide readers with additional information not found in the primary literature. The topics range from classic synthetic reactions (e.g. Diels Alder reaction), metal-mediated coupling reactions, metathesis, and asymmetric catalysis to the importance of protecting and activating groups. This book will benefit not only graduate students in organic chemistry but also advanced researchers as they gain knowledge derived from the step-by-step analysis of mistakes made in the past and, thus be able to improve their own chemical reaction planning. With its coverage of the most commonly applied reaction types, the book perfectly complements its predecessor, which focuses on general aspects, such as reactivity and selectivity.
Author : Jie Jack Li
Publisher : Springer Science & Business Media
ISBN 13 : 3642340652
Total Pages : 292 pages
Book Rating : 4.6/5 (423 download)
Download or read book Total Synthesis of Natural Products written by Jie Jack Li and published by Springer Science & Business Media. This book was released on 2013-03-14 with total page 292 pages. Available in PDF, EPUB and Kindle. Book excerpt: 'Total Synthesis of Natural Products' is written and edited by some of today's leaders in organic chemistry. Eleven chapters cover a range of natural products, from steroids to alkaloids. Each chapter contains an introduction to the natural product in question, descriptions of its biological and pharmacological properties and outlines of total synthesis procedures already carried out. Particular emphasis is placed on novel methodologies developed by the respective authors and their research groups. This text is ideal for graduate and advanced undergraduate students, as well as organic chemists in academia and industry.
Author : Darren Lee Whitehouse
Publisher :
ISBN 13 :
Total Pages : 166 pages
Book Rating : 4.:/5 (643 download)
Download or read book Approaches to the Total Synthesis of Wilfordine written by Darren Lee Whitehouse and published by . This book was released on 1993 with total page 166 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Kengadarane Anebouselvy
Publisher : Royal Society of Chemistry
ISBN 13 : 1782620907
Total Pages : 220 pages
Book Rating : 4.7/5 (826 download)
Download or read book Dienamine Catalysis for Organic Synthesis written by Kengadarane Anebouselvy and published by Royal Society of Chemistry. This book was released on 2018-03-02 with total page 220 pages. Available in PDF, EPUB and Kindle. Book excerpt: In the last decade a new era in asymmetric catalysis has been realised by the discovery of L-proline induced chiral enamines from carbonyls. Inspired by this, researchers have developed many other primary catalytic species in situ, more recently secondary catalytic species such as aminals have been identified for use in asymmetric synthesis. High-yielding asymmetric synthesis of bioactive and natural products through mild catalysis is an efficient approach in reaction engineering. In the early days, synthetic chemists mainly focused on the synthesis of complex molecules, with less attention on the reaction efficiency and eco-friendly conditions. Recent investigations have been directed towards the development of atom economy, eco-friendly and enantioselective synthesis for more targeted and efficient synthesis. Building on the momentum of this rapidly expanding research area, Dienamine catalysis for organic synthesis will provide a comprehensive introduction, from the preformed species, in situ generation and onto their applications in the synthesis of bioactive molecules and natural products.
Author : Mario Uosis-Martin
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (824 download)
Download or read book Approaches to the Total Synthesis of the Complanadines written by Mario Uosis-Martin and published by . This book was released on 2012 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: In this thesis is presented work carried out during the course of the last 42 months. It concerns approaches towards total syntheses of the complanadine alkaloids. The main focus is the development of a model system to establish the viability of the key step in our proposed route to the complanadines. The thesis is divided into five chapters. Chapter 1 is an introduction to the complanadines, their biological activity and accomplished total syntheses to date. A brief introduction to the Diels-Alder reaction and selected examples of its application in the total syntheses of natural products are given. The Kondrat'eva oxazole-olefin hetero-Diels-Alder reaction as a method of pyridine formation is described and its application in the total synthesis of natural products is reviewed. Chapter 2 is the first part of the results and discussion section. It details our retrosynthetic analysis of complanadine A, outlines the corresponding proposed forward synthesis and presents a model system designed and synthesised to test the applicability of the Kondrat'eva oxazole-olefin hetero-Diels-Alder reaction in the context of our proposed total synthesis. Chapter 3 discusses work carried out in approaches to the total synthesis of complanadines and their monomeric subunit, lycodine, by means of the methodology developed in the previous chapter. Chapter 4 is the experimental section, which gives descriptions of the synthetic procedures employed and spectroscopic data for all compounds synthesised, both novel and previously reported, as discussed in Chapter 2 and Chapter 3. Supplementary information such as X-Ray data for synthesised compounds and selected NMR spectra are enclosed in the appendices.
Author : Graeme James Dykes
Publisher :
ISBN 13 :
Total Pages : 144 pages
Book Rating : 4.:/5 (643 download)
Download or read book Approaches to the Total Synthesis of Wilfordine written by Graeme James Dykes and published by . This book was released on 1996 with total page 144 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :
Publisher : Elsevier
ISBN 13 : 0081026919
Total Pages : 4266 pages
Book Rating : 4.0/5 (81 download)
Download or read book Comprehensive Natural Products III written by and published by Elsevier. This book was released on 2020-07-22 with total page 4266 pages. Available in PDF, EPUB and Kindle. Book excerpt: Comprehensive Natural Products III, Third Edition, Seven Volume Set updates and complements the previous two editions, including recent advances in cofactor chemistry, structural diversity of natural products and secondary metabolites, enzymes and enzyme mechanisms and new bioinformatics tools. Natural products research is a dynamic discipline at the intersection of chemistry and biology concerned with isolation, identification, structure elucidation, and chemical characteristics of naturally occurring compounds such as pheromones, carbohydrates, nucleic acids and enzymes. This book reviews the accumulated efforts of chemical and biological research to understand living organisms and their distinctive effects on health and medicine and to stimulate new ideas among the established natural products community. Provides readers with an in-depth review of current natural products research and a critical insight into the future direction of the field Bridges the gap in knowledge by covering developments in the field since the second edition published in 2010 Split into 7 sections on key topics to allow students, researchers and professionals to find relevant information quickly and easily Ensures that the knowledge within is easily understood by and applicable to a large audience
Author : Gopal Sirasani
Publisher : Elsevier Inc. Chapters
ISBN 13 : 0128056045
Total Pages : 39 pages
Book Rating : 4.1/5 (28 download)
Download or read book Strategies and Tactics in Organic Synthesis written by Gopal Sirasani and published by Elsevier Inc. Chapters. This book was released on 2013-07-29 with total page 39 pages. Available in PDF, EPUB and Kindle. Book excerpt: Described herein is an account of my laboratory’s entry into the magnificent field of complex alkaloid total synthesis, spanning the development of novel methods for quickly assembling polycyclic frameworks through the total synthesis of various members of the Strychnos alkaloids. A discussion of the prior art related to our approach to these alkaloids in addition to strategic decisions and reasoning made en route to targets akuammicine ( 1 ), strychnine ( 2 ), and leuconicines A ( 3 ) and B ( 4 ) is carefully detailed. Finally, we present the retrosynthetic analyses of the aforementioned targets and respective total syntheses thereof (including asymmetric variants).
Author :
Publisher : Elsevier
ISBN 13 : 008091697X
Total Pages : 379 pages
Book Rating : 4.0/5 (89 download)
Download or read book Hetero Diels-Alder Methodology in Organic Synthesis written by and published by Elsevier. This book was released on 2012-12-02 with total page 379 pages. Available in PDF, EPUB and Kindle. Book excerpt: Organic Chemistry: A Series of Monographs, Volume 47: Hetero Diels-Alder Methodology in Organic Synthesis focuses on the use of hetero Diels-Alder reactions as pivotal steps in natural product total syntheses. The publication first offers information on N-sulfinyl compounds and sulfur diimides and imino dienophiles. Discussions focus on sulfur dioxide and related compounds, selenium dioxide, sulfur diimide cycloadditions, regiochemical, stereochemical, and mechanistic aspects, iminium salts and neutral imines, oximino compounds, and intramolecular cycloadditions. The text then takes a look at nitroso and thionitroso dienophiles and carbonyl dienophiles. The manuscript elaborates on thiocarbonyl and selenocarbonyl dienophiles and miscellaneous dienophiles. Topics include nitriles, azo compounds, selenoaldehydes, thioketones, thioesters, dithioesters, and related compounds, and thiophosgene and related compounds. The text also ponders on oxabutadienes, thiabutadienes, and azabutadienes. The publication is a valuable reference for chemists and readers interested in the Hetero Diels-Alder methodology.
Author : Mark James Ford
Publisher :
ISBN 13 :
Total Pages : 91 pages
Book Rating : 4.:/5 (1 download)
Download or read book Approaches to Asymmetric Total Synthesis written by Mark James Ford and published by . This book was released on 1986 with total page 91 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Hua-Jie Zhu
Publisher : John Wiley & Sons
ISBN 13 : 3527338225
Total Pages : 336 pages
Book Rating : 4.5/5 (273 download)
Download or read book Organic Stereochemistry written by Hua-Jie Zhu and published by John Wiley & Sons. This book was released on 2015-08-10 with total page 336 pages. Available in PDF, EPUB and Kindle. Book excerpt: Adopting a novel approach to the topic by combining theoretical knowledge and practical results, this book presents the most popular and useful computational and experimental methods applied for studying the stereochemistry of chemical reactions and compounds. The text is clearly divided into three sections on fundamentals, spectroscopic and computational techniques, and applications in organic synthesis. The first part provides a brief introduction to the field of chirality and stereochemistry, while the second part covers the different methodologies, such as optical rotation, electronic circular dichroism, vibrational circular dicroism, and Raman spectroscopy. The third section then goes on to describe selective examples in organic synthesis, classified by reaction type, i.e. enantioselective, chemoselective and stereoselective reactions. A final chapter on total synthesis of natural products rounds off the book. A valuable reference for researchers in academia and industry working in the field of organic synthesis, computational chemistry, spectroscopy or medicinal chemistry.
Author : E.J. Corey
Publisher : Рипол Классик
ISBN 13 : 5885010811
Total Pages : 447 pages
Book Rating : 4.8/5 (85 download)
Download or read book The logic of chemical synthesis written by E.J. Corey and published by Рипол Классик. This book was released on 1991 with total page 447 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Taikyun Rho
Publisher :
ISBN 13 :
Total Pages : 92 pages
Book Rating : 4.:/5 (149 download)
Download or read book Approaches to the Total Synthesis of Radermachol written by Taikyun Rho and published by . This book was released on 1986 with total page 92 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : K. C. Nicolaou
Publisher : John Wiley & Sons
ISBN 13 : 3527292314
Total Pages : 826 pages
Book Rating : 4.5/5 (272 download)
Download or read book Classics in Total Synthesis written by K. C. Nicolaou and published by John Wiley & Sons. This book was released on 1996-04-11 with total page 826 pages. Available in PDF, EPUB and Kindle. Book excerpt: K.C. Nicolaou - Winner of the Nemitsas Prize 2014 in Chemistry This book is a must for every synthetic chemist. With didactic skill and clarity, K. C. Nicolaou and E. Sorensen present the most remarkable and ingenious total syntheses from outstanding synthetic organic chemists. To make the complex strategies more accessible, especially to the novice, each total synthesis is analyzed retrosynthetically. The authors then carefully explain each synthetic step and give hints on alternative methods and potential pitfalls. Numerous references to useful reviews and the original literature make this book an indispensable source of further information. Special emphasis is placed on the skillful use of graphics and schemes: Retrosynthetic analyses, reaction sequences, and stereochemically crucial steps are presented in boxed sections within the text. For easy reference, key intermediates are also shown in the margins. Graduate students and researchers alike will find this book a gold mine of useful information essential for their daily work. Every synthetic organic chemist will want to have a copy on his or her desk.
