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Approaches Towards The Total Synthesis Of The Ephedradine Alkaloids
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Book Synopsis Approaches Towards the Total Synthesis of the Ephedradine Alkaloids by : G. R. Humphrey
Download or read book Approaches Towards the Total Synthesis of the Ephedradine Alkaloids written by G. R. Humphrey and published by . This book was released on 1987 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Some Approaches to the Total Synthesis of the Diterpenoid Alkaloids by :
Download or read book Some Approaches to the Total Synthesis of the Diterpenoid Alkaloids written by and published by . This book was released on 1964 with total page 167 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Approaches to the Total Synthesis of Furoquinoline Alkaloids by : Joseph Henry Cecil
Download or read book Approaches to the Total Synthesis of Furoquinoline Alkaloids written by Joseph Henry Cecil and published by . This book was released on 1967 with total page 98 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Approaches to the Total Synthesis of the Alkaloids of Gelsemium Species by : Keith Mills
Download or read book Approaches to the Total Synthesis of the Alkaloids of Gelsemium Species written by Keith Mills and published by . This book was released on 1971 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Approaches to the Total Synthesis of Alkaloid Natural Products Via Intramolecular Pericyclic Reactions by : Susan Yoshiko Tamura
Download or read book Approaches to the Total Synthesis of Alkaloid Natural Products Via Intramolecular Pericyclic Reactions written by Susan Yoshiko Tamura and published by . This book was released on 1983 with total page 254 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis An Approach to the Total Synthesis of Rhyncophylline by : Albert Harry Warfield
Download or read book An Approach to the Total Synthesis of Rhyncophylline written by Albert Harry Warfield and published by . This book was released on 1965 with total page 78 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Novel Approach to the Total Synthesis of Indole Alkaloids Via Cyclopentanoid Intermediates by : Mark Wingfield
Download or read book Novel Approach to the Total Synthesis of Indole Alkaloids Via Cyclopentanoid Intermediates written by Mark Wingfield and published by . This book was released on 1982 with total page 91 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Approaches to the Total Synthesis of the Lycopodium Alkaloid Fawcettimine and Related Studies by : Todd Andrew Blumenkopf
Download or read book Approaches to the Total Synthesis of the Lycopodium Alkaloid Fawcettimine and Related Studies written by Todd Andrew Blumenkopf and published by . This book was released on 1983 with total page 648 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Stereoselective Approach to Stemona Alkaloids by : Francisco Sánchez Izquierdo
Download or read book Stereoselective Approach to Stemona Alkaloids written by Francisco Sánchez Izquierdo and published by . This book was released on 2007 with total page 110 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis General Approach for the Synthesis of Macroline/sarpagine Alkaloids by : Yingzhi Bi
Download or read book General Approach for the Synthesis of Macroline/sarpagine Alkaloids written by Yingzhi Bi and published by . This book was released on 1994 with total page 376 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis New methods of alkaloid synthesis by : Thomas Allen Puckette
Download or read book New methods of alkaloid synthesis written by Thomas Allen Puckette and published by . This book was released on 1980 with total page 308 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Applications of Dihydroarenediols to Chemoenzymatic Synthesis by : Kevin J. Finn
Download or read book Applications of Dihydroarenediols to Chemoenzymatic Synthesis written by Kevin J. Finn and published by . This book was released on 2009 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Approaches to a Total Synthesis of the Aspidosperma Alkaloid Vindoline by : Chin-Kang Sha
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:
Book Synopsis Total Synthesis of Cyclotryptamine and Diketopiperazine Alkaloids by : Justin Kim (Ph. D.)
Download or read book Total Synthesis of Cyclotryptamine and Diketopiperazine Alkaloids written by Justin Kim (Ph. D.) and published by . This book was released on 2013 with total page 615 pages. Available in PDF, EPUB and Kindle. Book excerpt: I. Total Synthesis of the (+)-12,12'-Dideoxyverticillin A The fungal metabolite (+)-12,12'-dideoxyverticillin A, a cytotoxic alkaloid isolated from a marine Penicillium sp., belongs to a fascinating family of densely functionalized, stereochemically complex, and intricate dimeric epidithiodiketopiperazine natural products. Although the dimeric epidithiodiketopiperazines have been known for nearly four decades, none has succumbed to total synthesis. We report a concise enantioselective total synthesis of (+)- 12,12'-dideoxyverticillin A via a strategy inspired by our biosynthetic hypothesis for this alkaloid. Highly stereo- and chemoselective advanced-stage tetrahydroxylation and tetrathiolation reactions, as well as a mild strategy for the introduction of the epidithiodiketopiperazine core in the final step, were developed to address this highly sensitive substructure. Our rapid functionalization of the advanced molecular framework aims to mimic plausible biosynthetic steps and offers an effective strategy for the chemical synthesis of other members of this family of alkaloids. II. General Approach to Epipolythiodiketopiperazine Alkaloids: Total Synthesis of (+)- Chaetocins A and C and (+)-12,12'-Dideoxychetracin A A highly stereoselective and systematic strategy for the introduction of polysulfides in the synthesis of epipolythiodiketopiperazine alkaloids is described. We report the first total synthesis of dimeric epitri- and epitetrathiodiketopiperazine alkaloids. III. Concise Total Synthesis and Stereochemical Revision of (+)-Naseseazines A and B: Regioselective Arylative Dimerization of Diketopiperazine Alkaloids Concise and enantioselective total syntheses of (+)-naseseazines A and B are described. Our regioselective and directed dimerization of diketopiperazines provides their critical C3-Csp2 linkages, an assembly with plausible biogenetic relevance. We have revised the absolute stereochemistry of (+)-naseseazines A and B. IV. Concise Total Synthesis of (+)-Bionectins A and C The concise and efficient total synthesis of (+)-bionectins A and C is described. Our approach to these natural products features a new and scalable method for erythro-[beta]-hydroxytryptophan amino acid synthesis, an intramolecular Friedel-Crafts reaction of a silyl-tethered indole, and a new mercaptan reagent for epipolythiodiketopiperazine (ETP) synthesis that can be unravelled under very mild conditions. In evaluating the impact of Cl 2-hydroxylation, we have identified a unique need for an intramolecular variant of our Friedel-Crafts indolylation chemistry. Several key discoveries including the first example of permanganate-mediated stereoinvertive hydroxylation of the a-stereocenters of diketopiperazines as well as the first example of a direct triketopiperazine synthesis from a parent cyclo-dipeptide are discussed. Finally, the synthesis of (+)-bionectin A and its unambiguous structural assignment through X-ray analysis provides motivation for the reevaluation of its original characterization data and assignment.
Book Synopsis Novel Approach to the Total Synthesis of Corynanthe Indole Alkaloids Via Cyclopentanoid Intermediates by : Mark Wingfield
Download or read book Novel Approach to the Total Synthesis of Corynanthe Indole Alkaloids Via Cyclopentanoid Intermediates written by Mark Wingfield and published by . This book was released on 1986 with total page 218 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Part A, Synthesis of the C1-C27 Subunit of the Aplyronines by : Jianguang Zhou
Download or read book Part A, Synthesis of the C1-C27 Subunit of the Aplyronines written by Jianguang Zhou and published by . This book was released on 2005 with total page 600 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Progress Toward the Total Synthesis of Terpenoid Natural Products by : Jessica Louise Wood
Download or read book Progress Toward the Total Synthesis of Terpenoid Natural Products written by Jessica Louise Wood and published by . This book was released on 2011 with total page 426 pages. Available in PDF, EPUB and Kindle. Book excerpt: Progress has been made toward the total synthesis of a diverse array of natural products. Chapter 1 begins by introducing the isolation, bioactivity, and biosynthesis of the neomangicol and mangicol sesterterpenoids. Subsequent to that introduction, a summary of previous synthetic approaches to these natural products is presented. In the third section, our synthetic approaches are detailed, beginning with a first generation synthesis of the ABD tricycle, followed by a description of our revised route to the neomangicol tetracyclic core and our work toward the rearrangement of that core to the mangicol spirocyclic core. This chapter concludes with a summary of our accomplishments in this natural product area and outlines several strategies to achieve the desired rearrangement. The last section also includes our initial studies into the formation of the mangicol core. Preliminary work toward the synthesis of the ABD tricycle was performed by Dr. Brian Pujanauski. Chapter 2 details our work in the area of the yohimbine alkaloids. It begins with an introduction to these pentacyclic indole-containing natural products, discussing their isolation, proposed biosynthesis and giving a brief overview of the rich bioactivity that has been ascertained for these molecules. Closely related synthetic approaches are also described. Finally, our divergent approach to the synthesis of several yohimbine alkaloids, as well as strategic analogs, is delineated. Our proposal for rendering this route enantioselective is also detailed. This work was done in collaboration with Dr. Terry Lebold and Josh Deitch.