Download or read book Efforts Toward an Oxa conjugate Addition Based Approach to Neopeltolide Synthesis written by Taylor P. A. Hari and published by . This book was released on 2012 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: (+)-Neopeltolide is a highly potent marine polyketide natural product with activity against multiple cancer cell lines in vitro. The nanomolar range of antifungal and anticancer cytotoxicity in this tetrahydropyran (THP)-containing polyketide, combined with its limited natural supply, has led to several syntheses. In this study, the feasibility of an oxa-Michael conjugate addition route to cis-2,6-THP rings is examined through the efforts toward a total synthesis of the macrocyclic core of (+)-neopeltolide using a highly convergent route. This study is based on the successful preliminary results with a simple 14-member ring model system and the synthesis of the key aldehyde intermediate shown below. The highlighted transformation of this synthesis will be a transannular oxa-conjugate addition to generate the cis-2,6-tetrahydropyran ring system. This route also highlights a highly convergent Wittig coupling to generate the full carbon framework of (+)-neopeltolide. One of the key goals of this project is to compare this synthesis with a chemo-enzymatic total synthesis that relies on chemistry catalyzed by polyketide synthase enzymes in the late stage of the synthesis.
Download or read book Hydroformylation for Organic Synthesis written by Maurizio Taddei and published by Springer. This book was released on 2014-07-08 with total page 233 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Role of Metals and Ligands in Organic Hydroformylation, by Luca Gonsalvi, Antonella Guerriero, Eric Monflier, Frédéric Hapiot, Maurizio Peruzzini. Hydroformylation in Aqueous Biphasic Media Assisted by Molecular Receptors, by Frédéric Hapiot, Hervé Bricout, Sébastien Tilloy, Eric Monflier. Asymmetric Hydroformylation, by Bernabé F. Perandones, Cyril Godard, Carmen Claver. Domino Reactions Triggered by Hydroformylation, by Elena Petricci, Elena Cini. Rhodium-Catalyzed Hydroformylation in Fused Azapolycycles Synthesis, by Roberta Settambolo. Hydroformylation in Natural Product Synthesis, by Roderick W. Bates, Sivarajan Kasinathan.
Download or read book Organic Synthesis written by Belakatte Parameshwarappa Nandeshwarappa and published by BoD – Books on Demand. This book was released on 2020-05-27 with total page 250 pages. Available in PDF, EPUB and Kindle. Book excerpt: The book ‘Organic Synthesis - A Nascent Relook’ is a compendium of the recent progress in all aspects of organic chemistry including bioorganic chemistry, organo-metallic chemistry, asymmetric synthesis, heterocyclic chemistry, natural product chemistry, catalytic, green chemistry and medicinal chemistry, polymer chemistry, as well as analytical methods in organic chemistry. The book presents the latest developments in these fields. The chapters are written by chosen experts who are internationally known for their eminent research contributions. Organic synthesis is the complete chemical synthesis of a target molecule. In this book, special emphasis is given to the synthesis of various bioactive heterocycles. Careful selection of various topics in this book will serve the rightful purpose for the chemistry community and the industrial houses at all levels.
Download or read book Total Synthesis of Maoecrystal V written by Jianxian Gong and published by Springer. This book was released on 2014-07-08 with total page 146 pages. Available in PDF, EPUB and Kindle. Book excerpt: In this thesis, the author describes the total synthesis of natural product Maoecrystal V in detail. In the first part of the thesis, the author introduces the research background and reviews the research progress in total synthesis of Maoecrystal V. In the second part, the author develops a novel and concise approach for the stereo selective construction of the tetracyclic model system of Maoecrystal V. The model system is accomplished in 8 steps with 20% yield. In the third part, the author describes the first successful total synthesis of Maoecrystal V and investigates four strategies for constructing the key tetrahydrofuran oxa-bridge skeleton. The total synthesis starts from a known compound and is accomplished in 17 steps with 1.2% yield. The successful total synthesis of Maoecrystal V will contribute to the development of efficient synthetic strategies for natural products and other compounds with complex structures.
Download or read book Mechanochemical Organic Synthesis written by Davor Margetic and published by Elsevier. This book was released on 2016-04-23 with total page 388 pages. Available in PDF, EPUB and Kindle. Book excerpt: Mechanochemical Organic Synthesis is a comprehensive reference that not only synthesizes the current literature but also offers practical protocols that industrial and academic scientists can immediately put to use in their daily work. Increasing interest in green chemistry has led to the development of numerous environmentally-friendly methodologies for the synthesis of organic molecules of interest. Amongst the green methodologies drawing attention, mechanochemistry is emerging as a promising method to circumvent the use of toxic solvents and reagents as well as to increase energy efficiency. The development of synthetic strategies that require less, or the minimal, amount of energy to carry out a specific reaction with optimum productivity is of vital importance for large-scale industrial production. Experimental procedures at room temperature are the mildest reaction conditions (essentially required for many temperature-sensitive organic substrates as a key step in multi-step sequence reactions) and are the core of mechanochemical organic synthesis. This green synthetic method is now emerging in a very progressive manner and until now, there is no book that reviews the recent developments in this area. Features cutting-edge research in the field of mechanochemical organic synthesis for more sustainable reactions Integrates advances in green chemistry research into industrial applications and process development Focuses on designing techniques in organic synthesis directed toward mild reaction conditions Includes global coverage of mechanochemical synthetic protocols for the generation of organic compounds
Download or read book Metal and Nonmetal Assisted Synthesis of Six Membered Heterocycles written by Navjeet Kaur and published by Elsevier. This book was released on 2020-04-25 with total page 526 pages. Available in PDF, EPUB and Kindle. Book excerpt: Metal and Nonmetal Assisted Synthesis of Six-Membered Heterocycles provides a useful guide to key approaches being explored in this area. The volume highlights synthetic approaches and catalytic options that facilitate the construction of multiple substituted molecules under mild conditions from easily available starting substrates. Drawing on the experience of its expert author, the book is a useful guide on the key approaches being explored in this area. Following a user-friendly structure based on specific six-membered heterocycle ring groups, this volume highlights synthetic approaches and catalytic options that facilitate the construction of multiple substituted molecules under mild conditions from easily available starting substrates. Highlights new methodologies for the synthesis of different six-membered heterocycles Provides an up-to-date overview of this fast-moving field with an easy-to-use structure Includes novel approaches used in the study and application of catalysts in synthetic organic reactions
Download or read book Chemical Biology of Natural Products written by David J. Newman and published by CRC Press. This book was released on 2017-09-22 with total page 650 pages. Available in PDF, EPUB and Kindle. Book excerpt: Chemical Biology of Natural Products This unique, long-awaited volume is designed to address contemporary aspects of natural product chemistry and its influence on biological systems, not solely on human interactions. The subjects covered include discovery, isolation and characterization, biosynthesis, biosynthetic engineering, pharmaceutical, and other applications of these compounds. Each chapter begins with a brief and simple introduction to the subject matter, and then proceeds to guide the reader towards the more contemporary, cutting-edge research in the field, with the contributing authors presenting current examples from their own work in order to exemplify key themes. Topics covered in the text include genome mining, heterologous expression, natural product synthesis, biosynthesis, glycosylation, chemical ecology, and therapeutic applications of natural products, both current and potential.
Download or read book Practical Medicinal Chemistry with Macrocycles written by Eric Marsault and published by John Wiley & Sons. This book was released on 2017-09-12 with total page 617 pages. Available in PDF, EPUB and Kindle. Book excerpt: Including case studies of macrocyclic marketed drugs and macrocycles in drug development, this book helps medicinal chemists deal with the synthetic and conceptual challenges of macrocycles in drug discovery efforts. Provides needed background to build a program in macrocycle drug discovery –design criteria, macrocycle profiles, applications, and limitations Features chapters contributed from leading international figures involved in macrocyclic drug discovery efforts Covers design criteria, typical profile of current macrocycles, applications, and limitations
Download or read book Hard and Soft Acids and Bases written by Ralph G. Pearson and published by Hutchinson Ross Publishing Company. This book was released on 1973 with total page 500 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Iron Catalysis written by Bernd Plietker and published by Springer Science & Business Media. This book was released on 2011-01-05 with total page 227 pages. Available in PDF, EPUB and Kindle. Book excerpt: Juan I. Padrón and Víctor S. Martín: Catalysis by means of Fe-based Lewis acids; Hiroshi Nakazawa*, Masumi Itazaki: Fe–H Complexes in Catalysis; Kristin Schröder, Kathrin Junge, Bianca Bitterlich, and Matthias Beller: Fe-catalyzed Oxidation Reactions of Olefins, Alkanes and Alcohols: Involvement of Oxo- and Peroxo Complexes; Chi-Ming Che, Cong-Ying Zhou, Ella Lai-Ming Wong: Catalysis by Fe=X Complexes (X=NR, CR2); René Peters, Daniel F. Fischer and Sascha Jautze: Ferrocene and Half Sandwich Complexes as Catalysts with Iron Participation; Markus Jegelka, Bernd Plietker: Catalysis by Means of Complex Ferrates.
Download or read book Lanthanides in Organic Synthesis written by Tsuneo Imamoto and published by . This book was released on 1994 with total page 184 pages. Available in PDF, EPUB and Kindle. Book excerpt: Organic synthesis with lanthanides has experienced enormous growth in the last ten years. Numerous synthetic reactions have been explored by the use of lanthanide reagents, and some of these have become indispensablein modern organic synthesis. This book describes the remarkable scope and potential of these reagents, addressing this rapidly growing area from a practical point-of-view. The author has summarized synthetically useful and novel organic transformations, emphasizing the characteristic properties of lanthanide reagents. These transformations are concisely and skillfully presented in many schemes and tables, with actual illustrative preparations. The coverage includes the use of lanthanide metals, the powerful divalent reagents such as samarium (II) iodide, the key trivalent reagents and their particular role as catalysts in selective reductions and cycloadditions, and the tetravalent lanthanides as oxidants. Describes the remarkable scope and potential of lanthanide reagents from a practical point-of-view Presents actual experimental procedures Provides a concise presentation of useful and novel organic transformations in table format
Download or read book Encyclopedia of Marine Natural Products written by Jean-Michel Kornprobst and published by John Wiley & Sons. This book was released on 2014-06-09 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Now in its second edition and further expanded by 15%, this encyclopedic work is one of the largest resources on marine natural products. It contains an exhaustive and systematic listing of more than 9,000 formulae and 10,000 references with around 650 relevant websites. The unique approach of classifying the compounds by biological species together with their background information makes this particularly useful for marine biologists, and contributed significantly to the overwhelming success of the previous edition. The digital version now features a completely cross-linked library of compounds for easy access to related substances, making it even more useful for biologists, chemists and pharmacologists alike.
Download or read book Asymmetric catalysis written by Michael P. Doyle and published by JAI Press(NY). This book was released on 1997 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: This is the second volume in a series covering research advances in the field of catalytic processes.
Download or read book Modern Methods in Stereoselective Aldol Reactions written by Rainer Mahrwald and published by John Wiley & Sons. This book was released on 2013-02-22 with total page 604 pages. Available in PDF, EPUB and Kindle. Book excerpt: The selective formation of bondings between molecules is one of the major challenges in organic chemistry, and the so-called aldol reaction is one of the most important for this purpose. These reactions are a highly useful tool for developing such novel substances as natural products and pharmaceuticals. Likes its highly successful and much appreciated predecessor, "Modern Aldol Reactions", this ready reference provides a systematic overview of methodologies for installing a required configuration during an aldol addition step, but shifts the focus so as to cover the latest developments. As such, it presents a set of brand new tools, including vinylogous Mukaiyama-aldol reactions and substrate-controlled aldol reactions, as well as asymmetric induction in aldol additions. Furthermore, new developments in existing stereoselective aldol additions are described, such as the deployment of supersilyl groups or organocatalyzed aldol additions. All of these methodologies are presented in the context of their deployment in the total synthesis of natural products.
Download or read book Sulfur Chemistry written by Xuefeng Jiang and published by Springer Nature. This book was released on 2019-08-28 with total page 475 pages. Available in PDF, EPUB and Kindle. Book excerpt: The series Topics in Current Chemistry Collections presents critical reviews from the journal Topics in Current Chemistry organized in topical volumes. The scope of coverage is all areas of chemical science including the interfaces with related disciplines such as biology, medicine and materials science. The goal of each thematic volume is to give the non-specialist reader, whether in academia or industry, a comprehensive insight into an area where new research is emerging which is of interest to a larger scientific audience. Each review within the volume critically surveys one aspect of that topic and places it within the context of the volume as a whole. The most significant developments of the last 5 to 10 years are presented using selected examples to illustrate the principles discussed. The coverage is not intended to be an exhaustive summary of the field or include large quantities of data, but should rather be conceptual, concentrating on the methodological thinking that will allow the non-specialist reader to understand the information presented. Contributions also offer an outlook on potential future developments in the field.
Download or read book Organic Chemistry from Retrosynthesis to Asymmetric Synthesis written by Vitomir Šunjić and published by Springer. This book was released on 2016-04-30 with total page 221 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book connects a retrosynthetic or disconnection approach with synthetic methods in the preparation of target molecules from simple, achiral ones to complex, chiral structures in the optically pure form. Retrosynthetic considerations and asymmetric syntheses are presented as closely related topics, often in the same chapter, underlining the importance of retrosynthetic consideration of target molecules neglecting stereochemistry and equipping readers to overcome the difficulties they may encounter in the planning and experimental implementation of asymmetric syntheses. This approach prepares students in advanced organic chemistry courses, and in particular young scientists working at academic and industrial laboratories, for independently solving synthetic problems and creating proposals for the synthesis of complex structures.
Download or read book Modern Enolate Chemistry written by Manfred Braun and published by John Wiley & Sons. This book was released on 2016-02-23 with total page 454 pages. Available in PDF, EPUB and Kindle. Book excerpt: Authored by one of the world?s leading synthetic chemists in the field, this reference presents modern enolate chemistry with an emphasis on metal O-enolates in asymmetric synthesis. While great care is taken to cover novel, successful concepts, such classical methods as the famous Evans enolates are equally highlighted. Throughout the book representative reaction procedures are presented, thus helping readers to find the best solution for their own synthetic problem. Of high interest to synthetic chemists in academia, as well as the pharmaceuticals, agrochemicals and fine chemicals industries.
