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Studies Towards The Total Synthesis Of The Macrocyclic Diamine Alkaloid Haliclonacyclamine C
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Book Synopsis Studies Towards the Total Synthesis of the Macrocyclic Diamine Alkaloid Haliclonacyclamine C by : Tao Qu
Download or read book Studies Towards the Total Synthesis of the Macrocyclic Diamine Alkaloid Haliclonacyclamine C written by Tao Qu and published by . This book was released on 2005 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Marine sponges produce a series of complex polycyclic diamine alkaloids which appear to have a common biogenesis from simple bis-pyridine macrocycles. These structurally novel secondary metabolites are presumably biosynthetically produced by the controlled ionic coupling of macrocyclic 3-alkyl piperidines leading to 3,4'-linked bis-piperidines (ii). Included among these diamine marine alkaloids is haliclonacyclamine C (i) which serves as our synthetic target. Chapter I in this thesis provides background information describing biological activity and proposed biosynthetic pathways to these important diamine marine alkaloids. Chapter II details progress towards the total synthesis of haliclonacyclamine C. The focus of Chapter II will be on our successful construction of the 3,4'-linked bispiperidine central core (ii) highlighted by the use of palladium-mediated C-C bond forming processes. The stereoselective hydrogenation of a coupled product will also be discussed.
Book Synopsis Total Synthesis of Haliclonacyclamine C by : Brian Joseph Smith
Download or read book Total Synthesis of Haliclonacyclamine C written by Brian Joseph Smith and published by . This book was released on 2010 with total page 238 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Towards Schizozygine Type Alkaloids by : Xiangyu Zhang
Download or read book Towards Schizozygine Type Alkaloids written by Xiangyu Zhang and published by . This book was released on 2019 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: As a classic and powerful tool for carbon-carbon bond formation, the nitro-Mannich reaction has shown its versatility in drugs and natural products syntheses. The 1,2-diamine structure, a reduced moiety from nitro-Mannich adduct, is widely present in naturally occurring alkaloids and this feature suggested the potential application of nitro-mannich reaction in such alkaloids synthesis. This thesis showcases the nitro-Mannich reaction as a key strategic reaction through studies towards the total synthesis of 1,2-diamine contained alkaloids, schizozygine, vallesamidine and strempeliopine (Chapter 1 and 2). Initial studies on the schizozygine molecule (Chapter 3) generated a diastereoselective nitro-Mannich reaction on -branched nitroalkanes to synthesise complex -nitroamines with three contigurous chiral centres and syn,anti stereochemistry. This reaction was followed by a reductive cyclisation to achieve the functionalised piperidine ring C. Although the subsequent manipulation towards advanced shcizozygine intermediate was unsuccessful, the nitro-Mannich/reductive cyclisation sequence provided methodology for highly functionalised piperidine ring synthesis. A second generation route using nitro-Mannich reaction was accompanied by other nitro group chemistry, Michael addition, Tsuji-Trost allylation and nitro group reduction/C-N coupling reaction, to realise the quick and concise preparation of an A/B/C ring intermediate. An unusual and novel [1,4]-hydride tansfer/Mannich type cyclisation was carried out to build the ring E. The resulting A/B/C/E ring intermediate was used divergently to complete the total synthesis of (+)-vallesamidine (Chapter 4) and (+)-14,15-dehydrostrempeliopine (Chapter 5) as well as three other unnatural analogues. These natural and unnatural products could be candidates for drug discovery research and the route would be applicale for the synthesis of schizozygine and related molecules.
Book Synopsis Studies Towards the Total Synthesis of Macroline Alkaloids by : Benedikt Johannes Maier
Download or read book Studies Towards the Total Synthesis of Macroline Alkaloids written by Benedikt Johannes Maier and published by . This book was released on 2023 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Total Synthesis of Indole Alkaloids by : Junpei Matsuoka
Download or read book Total Synthesis of Indole Alkaloids written by Junpei Matsuoka and published by Springer Nature. This book was released on 2020-09-18 with total page 91 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book explores efficient syntheses of indole alkaloids based on gold-catalyzed cascade cyclizations, presenting two strategies for total synthesis of these natural products based on gold-catalyzed reactions of conjugated diyne or ynamide. The book first describes the total and formal synthesis of dictyodendrins A–F based on direct construction of the pyrrolo[2,3-c]carbazole core using the gold-catalyzed annulation of azido-diynes and protected pyrrole. This synthetic strategy features late-stage functionalization of the pyrrolo[2,3-c]carbazole scaffold at several positions and allows diverse access to dictyodendrins and their derivatives. Secondly, the book discusses the formal synthesis of vindorosine based on the pyrrolo[2,3-d]carbazole construction using the gold-catalyzed cascade cyclization of ynamide. Importantly, the reaction using a chiral gold complex provides the optically active pyrrolo[2,3-d]carbazole. This strategy facilitates the rapid construction of the pyrrolocarbazole core structure of aspidosperma and related alkaloids, including vindorosine. These methodologies can accelerate the medicinal application of pyrrolocarbazole-type alkaloids and related compounds.
Book Synopsis Part I: Studies Towards the Total Synthesis of Zoanthamine Alkaloids Part II: Total Synthesis of (-)-lankacyclinol by : Guillermo Stanley Cortez Veliz
Download or read book Part I: Studies Towards the Total Synthesis of Zoanthamine Alkaloids Part II: Total Synthesis of (-)-lankacyclinol written by Guillermo Stanley Cortez Veliz and published by . This book was released on 2000 with total page 380 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :Hans-Joachim Knoelker Publisher :Springer Science & Business Media ISBN 13 :3642255280 Total Pages :268 pages Book Rating :4.6/5 (422 download)
Book Synopsis Alkaloid Synthesis by : Hans-Joachim Knoelker
Download or read book Alkaloid Synthesis written by Hans-Joachim Knoelker and published by Springer Science & Business Media. This book was released on 2012-01-13 with total page 268 pages. Available in PDF, EPUB and Kindle. Book excerpt: Lycopodium Alkaloids: Isolation and Asymmetric Synthesis, by Mariko Kitajima and Hiromitsu Takayama.- Synthesis of Morphine Alkaloids and Derivatives, by Uwe Rinner and Tomas Hudlicky.- Indole Prenylation in Alkaloid Synthesis, by Thomas Lindel, Nils Marsch and Santosh Kumar Adla.- Marine Pyrroloiminoquinone Alkaloids, by Yasuyuki Kita and Hiromichi Fujioka.- Synthetic Studies on Amaryllidaceae and Other Terrestrially Derived Alkaloids, by Martin G. Banwell, Nadia Yuqian Gao, Brett D. Schwartz and Lorenzo V. White.- Synthesis of Pyrrole and Carbazole Alkaloids, by Ingmar Bauer and Hans-Joachim Knölker.-
Book Synopsis From Nucleosides to Alkaloids and Polyketides by : Dominik Hager
Download or read book From Nucleosides to Alkaloids and Polyketides written by Dominik Hager and published by . This book was released on 2012 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Studies Towards Total Synthesis of Polyketide Natural Products and Alkaloids by : Anastasia Hager
Download or read book Studies Towards Total Synthesis of Polyketide Natural Products and Alkaloids written by Anastasia Hager and published by . This book was released on 2012 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Studies Towards the Total Synthesis of Dichomine by : Christian Leitner
Download or read book Studies Towards the Total Synthesis of Dichomine written by Christian Leitner and published by . This book was released on 2016 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Synthetic Studies of Allylstannanes by : Jonathan Eric Enholm
Download or read book Synthetic Studies of Allylstannanes written by Jonathan Eric Enholm and published by . This book was released on 1985 with total page 272 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Studies Toward the Toward the Total Synthesis of the Alkaloids Gelsedine and Manzamine A by : Scott A. Ballentine
Download or read book Studies Toward the Toward the Total Synthesis of the Alkaloids Gelsedine and Manzamine A written by Scott A. Ballentine and published by . This book was released on 2000 with total page 514 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Studies Toward the Total Synthesis of Alkaloids: Nagelamide A and D, Agelastatin D, Dragmacidin A-C, Salacin and Almazoles by : Sorasaree Tonsiengsom
Download or read book Studies Toward the Total Synthesis of Alkaloids: Nagelamide A and D, Agelastatin D, Dragmacidin A-C, Salacin and Almazoles written by Sorasaree Tonsiengsom and published by . This book was released on 2007 with total page 279 pages. Available in PDF, EPUB and Kindle. Book excerpt: In studies toward the synthesis of agelastatin D, the ABD-ring system was derived from a beta-functionalization of linear imidazolone. The studies carried out in the course of this thesis have set in place a major ABD-ring core for the agelastatin D. Only the construction of the C-ring through a one-carbon bridge remains to be done.
Book Synopsis Synthetic Studies Towards the Total Synthesis of Strychnos Alkaloids by : Johannes Nicolaas Zonjee
Download or read book Synthetic Studies Towards the Total Synthesis of Strychnos Alkaloids written by Johannes Nicolaas Zonjee and published by . This book was released on 1989 with total page 136 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Indole Alkaloids written by Maliha Uroos and published by Elsevier. This book was released on 2022-01-30 with total page 236 pages. Available in PDF, EPUB and Kindle. Book excerpt: Indole Alkaloids: Spirooxindole details the multistep synthesis of natural products using schematic diagrams, providing a quick-and-easy way to review and understand new and novel synthetic strategies to construct structural frameworks of natural products. As a volume in the Visual Guides to Natural Product Synthesis series, this book presents the schematic total syntheses of natural products containing a "spirooxindole core structure. It covers spirooxindole molecules through visual diagrams, highlighting key steps involved in total, formal and semi-syntheses. Sections cover Brevianamide A and B, Citrinadin A and B, Coerulescine and Horsfiline, Elacomine and Isoelacomine, Gelsemine, Paraherquamide A and B, Rynchophylline, Isorynchophylline, and more. Visual layouts provide quick-and- easy access to developed synthetic routes towards the targeted spirooxindoles. - Outlines synthetic strategies for natural products bearing a spirooxindole core structure - Includes schematic diagrams of multistep synthetic routes, highlighting key steps along the way - Describes all routes for the formal synthesis, semi-synthesis and total synthesis of spirooxindole alkaloids
Book Synopsis Studies in the Synthesis of Pyrroloindole Alkaloids and the Total Synthesis of Okaramine C. by : P. R. Hewitt
Download or read book Studies in the Synthesis of Pyrroloindole Alkaloids and the Total Synthesis of Okaramine C. written by P. R. Hewitt and published by . This book was released on 2006 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Total Synthesis of Loline Alkaloids and Studies toward Naphthomycin K by : Mesut Çakmak
Download or read book Total Synthesis of Loline Alkaloids and Studies toward Naphthomycin K written by Mesut Çakmak and published by . This book was released on 2012 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
