Relevant bibliographies by topics / Calyciphylline A type alkaloids

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  2. Dissertations / Theses
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Academic literature on the topic 'Calyciphylline A type alkaloids'

Author: Grafiati
Published: 4 June 2021
Last updated: 8 February 2022

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Journal articles on the topic "Calyciphylline A type alkaloids"

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Zhong, Jiaxin, Haibing He, and Shuanhu Gao. "Exploration of 1,3-dipolar cycloaddition reactions to construct the core skeleton of Calyciphylline A-type alkaloids." Organic Chemistry Frontiers 6, no. 22 (2019): 3781–85. http://dx.doi.org/10.1039/c9qo01111k.

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Kang, Baldip, Pavol Jakubec, and Darren J. Dixon. "Strategies towards the synthesis of calyciphylline A-type Daphniphyllum alkaloids." Nat. Prod. Rep. 31, no. 4 (2014): 550–62. http://dx.doi.org/10.1039/c3np70115h.

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The structurally unique calyciphylline A-type Daphniphyllum alkaloids have recently attracted the interest of natural product synthesis groups, due to the challenge posed by the complex structural framework. Recently, several noteworthy core syntheses were reported using a variety of novel synthetic strategies, which include intramolecular Michael addition, Pd-catalysis, cycloaddition and Mannich-type reactions.
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Nakamura, Hugh, Manami Kawakami, Chihiro Tsukano, and Yoshiji Takemoto. "Construction of the ACDE Ring System of Calyciphylline A-type Alkaloids via Intramolecular Diels–Alder Reaction of a Tetrasubstituted Olefin." Synlett 30, no. 20 (2019): 2253–57. http://dx.doi.org/10.1055/s-0039-1690267.

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A concise synthesis of the ACDE tetracyclic ring system of calyciphylline A-type alkaloids was investigated. The intramolecular Diels–Alder reaction of a tetrasubstituted olefin with furan enabled the construction of the ACD ring system bearing two contiguous quaternary carbons in one step, and subsequent intramolecular [3+2] cycloaddition successfully gave the E ring.
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Kumar, Balagani Satish, and Sadagopan Raghavan. "Stereoselective Synthesis of the A,E-Ring Bicyclic Core of Calyciphylline B-Type Alkaloids." Synlett 30, no. 19 (2019): 2157–60. http://dx.doi.org/10.1055/s-0039-1690721.

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A stereoselective synthesis of the bicyclic unit constituting the A and E rings of calyciphylline B-type alkaloids is disclosed. The propionate ester of (1R)-cyclohex-2-en-1-ol, obtained by enzymatic resolution, is subjected to an Ireland–Claisen rearrangement. Subsequent reduction of the acid, Mitsunobu reaction to introduce a nitrogen functionality, oxidative cleavage to a dialdehyde, and intramolecular aldol and aza-Michael reactions afford the bicyclic subunit.
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Diaba, Faïza, Agustín Martínez-Laporta, Guilhem Coussanes, Israel Fernández, and Josep Bonjoch. "Synthesis of the ABC fragment of calyciphylline A-type Daphniphyllum alkaloids." Tetrahedron 71, no. 22 (2015): 3642–51. http://dx.doi.org/10.1016/j.tet.2014.11.044.

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Du, Chenglong, Jing Fang, Jinyan Chen, et al. "Construction of the Tetracyclic Core of Calyciphylline B-Type Daphniphyllum Alkaloids." Organic Letters 21, no. 21 (2019): 8718–21. http://dx.doi.org/10.1021/acs.orglett.9b03322.

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Chattopadhyay, Amit Kumar, Helge Menz, Vu Linh Ly, Stéphane Dorich, and Stephen Hanessian. "Synthesis of a Model Tetracyclic Core Structure of Calyciphylline B-Type Alkaloids." Journal of Organic Chemistry 81, no. 5 (2016): 2182–88. http://dx.doi.org/10.1021/acs.joc.5b02875.

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Sasano, Yusuke. "Total Syntheses of Calyciphylline A-type Alkaloids with Highly Condensed Polycyclic Structures." Journal of Synthetic Organic Chemistry, Japan 78, no. 4 (2020): 353–56. http://dx.doi.org/10.5059/yukigoseikyokaishi.78.353.

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Hugelshofer, Cedric L., Vignesh Palani, and Richmond Sarpong. "Calyciphylline B-type Alkaloids: Evolution of a Synthetic Strategy to (−)-Daphlongamine H." Journal of Organic Chemistry 84, no. 21 (2019): 14069–91. http://dx.doi.org/10.1021/acs.joc.9b02223.

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Kang, Baldip, Pavol Jakubec, and Darren J. Dixon. "ChemInform Abstract: Strategies Towards the Synthesis of Calyciphylline A-Type Daphniphyllum Alkaloids." ChemInform 45, no. 32 (2014): no. http://dx.doi.org/10.1002/chin.201432260.

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Dissertations / Theses on the topic "Calyciphylline A type alkaloids"

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Michaelides, Iacovos Neal. "Towards the total synthesis of calyciphylline A-type Daphniphyllum alkaloids." Thesis, University of Oxford, 2014. http://ora.ox.ac.uk/objects/uuid:e506466b-5954-4245-babe-f7bdc6a022c2.

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This thesis details the studies towards the total synthesis of the calyciphylline A-type Daphniphyllum alkaloids, with a particular focus on daphniyunnine D (23). Chapter 1 introduces these biologically and synthetically interesting polycyclic natural products and describes our designed approach towards their synthesis. Separate studies targeting the construction of two tricyclic ring systems have been developed. These provide rapid entry to synthetically versatile intermediates, allowing for the potential synthesis of numerous members of the alkaloid family. Chapter 2 describes the first stud
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中村, 斐有. "Caprazamycin類とCalyciphylline A型アルカロイドの全合成研究". 京都大学 (Kyoto University), 2017. http://hdl.handle.net/2433/225523.

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Miller, Iain Robert. "Stereoselective synthesis of (-)-galanthamine and lupin-type alkaloids." Thesis, University of Southampton, 2008. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.496093.

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A new asymmetric synthetic route to (-)-galanthamine (1.01), a potent Amaryllidaceae alkaloid used in the symptomatic treatment of early on-set Alztheimer's disease (AD), was successfully developed with complete stereocontrol. Key to achieving high chemo-and stereo-selectivity in this approach was the use of transition metal (IM) mediated reactions, in the form of an enyne RCM; a Heck coupling and a titanium based asymmetric allylation. Additionally, application of an asymmetric imino-aldol reaction resulted in the short total synthesis of two Lupin-type alkaloids, tashiromine (3.01) and epilu
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Boissarie, Patrick. "Développement d'une séquence stéréocontrôlée de cyclisation de Vilsmeier-Haack et de cycloaddition (3+2) d'ylure d'azométhine, pour la synthèse stéréosélective d'alcaloïdes de la famille Aspidosperma et de type Calyciphylline B." Thèse, Université de Sherbrooke, 2017. http://hdl.handle.net/11143/10980.

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Ce travail traite du développement d’une nouvelle approche vers les squelettes tricycliques de plusieurs familles d’alcaloïdes non racémiques, impliquant une réaction de cyclisation de type Vilsmeier-Haack puis de cycloaddition (3 + 2) d’ylure d’azométhine. Le premier chapitre traite du design de cette cascade réactionnelle stéréocontrôlée ainsi que de l’identification d’un nucléophile cyclique chiral. Le développement des conditions réactionnelles pour la formation du nucléophile choisi est ainsi discuté, et ce nucléophile est testé sur un substrat modèle pour la cyclisation désirée. Le d
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Dawood, Dawood Hosni. "Towards the synthesis of monoterpenoids indole alkaloids of the aspidospermatan and strychnan type." Thesis, Bordeaux 1, 2010. http://www.theses.fr/2010BOR14155/document.

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L'objectif de ce travail était d'accéder au squelette des alcaloïdes de type Aspidosperma et Strychnos à partir d'arylcyclohexa-2,5-diènes. Ces derniers sont d'abord synthétisés par réaction de Birch alkylante, puis ont été désymétrisés dans un premier temps par des réactions de Michael. Cette réaction fournit la cétone de Büchi, le noyau tétracyclique des alcaloïdes Aspidosperma en seulement en 6 étapes et un rendement global de 17%. Dans un second temps, la réaction d'amination oxydante catalysée par des métaux (Pd, Cu) a été développée. Cette réaction a permis un accès rapide au squelette p
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Langel, Dorothee. "Biosynthesis of the unique necic acid moiety in lycopsamine type pyrrolizidine alkaloids a molecular approach." Göttingen Cuvillier, 2008. http://d-nb.info/989861198/04.

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Bahar, Mark. "Protoberberine-type Alkaloids as Lead Compounds for the Treatment of African Sleeping Sickness, Leishmaniasis, and Malaria." The Ohio State University, 2012. http://rave.ohiolink.edu/etdc/view?acc_num=osu1330974078.

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Loiseau, Francis. "Cope-type Hydroamination of Alkenes with Hydroxylamines and Hydrazines - Scope and Mechanism." Thèse, Université d'Ottawa / University of Ottawa, 2013. http://hdl.handle.net/10393/23794.

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Hydroamination stands as a desirable approach to nitrogen-containing molecules, which have important applications ranging from pharmaceuticals (fine chemicals) to paints, coatings, insecticides and agrochemicals (bulk chemicals). It features the use of alkene and alkyne starting materials, which are abundant and rarely used in the formation of C-N bonds. This work aims at building on the improved Cope-type reactivity developed in the Beauchemin group by expanding the reach of the reaction and understanding its mechanistic complexities. The first part of this thesis describes the development of
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Sagen, Anne-Lise. "Phytochemical and biological investigations on Clathrotropis glaucophylla (Fabaceae), an ingredient of Yanomamï curare, emphasizing on quinolizidine alkaloids /." [S.l.] : [s.n.], 2002. http://e-collection.ethbib.ethz.ch/show?type=diss&nr=14785.

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Loevezijn, Arnold van. "Solid phase synthesis of fumitremorgin-type alkaloids based on cyclization/cleavage strategy chemistry and inhibitory activity on the BCRP multidrug transporter /." [S.l. : Amsterdam : s.n.] ; Universiteit van Amsterdam [Host], 2002. http://dare.uva.nl/document/65521.

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Book chapters on the topic "Calyciphylline A type alkaloids"

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Yue, Q., S. Logendra, A. Freehoff, and M. D. Richardson. "Alkaloids of Turf-Type Fine Fescue (Festuca Sp.)." In Neotyphodium/Grass Interactions. Springer US, 1997. http://dx.doi.org/10.1007/978-1-4899-0271-9_54.

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Wallwey, Christiane, and Shu-Ming Li. "Production, Detection, and Purification of Clavine-Type Ergot Alkaloids." In Fungal Secondary Metabolism. Humana Press, 2012. http://dx.doi.org/10.1007/978-1-62703-122-6_8.

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Ikuta, Akira. "Indolopyridoquinazoline, Furoquinoline, Canthinone and Protoberberine-Type Alkaloids from Phellodendron amurense Callus Tissues." In Medicinal and Aromatic Plants XII. Springer Berlin Heidelberg, 2002. http://dx.doi.org/10.1007/978-3-662-08616-2_11.

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Taber, Douglass F. "The Smith Synthesis of (−)-Calyciphylline N." In Organic Synthesis. Oxford University Press, 2017. http://dx.doi.org/10.1093/oso/9780190646165.003.0095.

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The Daphniphyllum alkaloids are a diverse group, some of which exhibit potent bio­logical activity. Amos B. Smith III of the University of Pennsylvania envisioned (J. Am. Chem. Soc. 2014, 136, 870) the preparation of the bicyclo[2.2.2] core of (−)-calyciphylline N 3 by the intramolecular Diels–Alder cyclization of 1 to 2, with the silicon of 2 a surrogate for the secondary alcohol of 3. Following the precedent of Mori (Tetrahedron Asymm. 2005, 16, 685), the requi­site secondary center of 1 was set by methylation of the anion derived from the Evans acyl oxazolidinone 4. Reductive removal of the oxazolidinone led to the alcohol 5, that was reduced under Birch conditions, then isomerized with base to the desired conjugated diene 6. This was silylated with the alkenyl silane 7 to give the triene 1. Direct thermal cyclization of 1 gave a mixture of all four possible diastereomers of the cycloadduct. Fortunately, the Lewis acid-activated cyclization delivered 2 as the dominant diastereomer. To differentiate the two ends of the alkene, the ester of 2 was extended to the alco­hol 8. Epoxidation occurred from the more open face of the alkene, setting the stage for intramolecular opening and oxidation to give 9. Reduction with SmI2 and protec­tion then completed the preparation of the ketone 10. The third quaternary center of 3 was constructed by acetylation of 10 followed by Pd-catalyzed allylation, to give 11. On exposure to LDA, the derived iodide 12 smoothly cyclized to the cycloheptanone 13, the structure of which was confirmed by X-ray analysis. The alkene of 13 was converted to the primary alcohol, which was protected. The aryl lithium 14 then was used to selectively open the cyclic silyl ether, to give 15. Coupling with phthalimide followed by carbonylative vinylation of the derived vinyl triflate delivered the dienone 16. Exposure to HBF4 effected the desired Nazarov cyclization, and at the same time converted the aryl silane to the fluorosilane, set for the Tamao oxidation that revealed the secondary alcohol. The two alcohols were sequentially protected to give 17. Direct oxidation of the primary silyl ether gave the aldehyde.
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Wu, Fangrui, Petra Kerčmar, Chenggui Zhang, and Joachim Stöckigt. "Sarpagan-Ajmalan-Type Indoles." In The Alkaloids: Chemistry and Biology. Elsevier, 2016. http://dx.doi.org/10.1016/bs.alkal.2015.10.001.

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Tillequin, François, Sylvie Michel, and Alexios-Léandros Skaltsounis. "Acronycine-Type Alkaloids : Chemistry and Biology." In Alkaloids: Chemical and Biological Perspectives. Elsevier, 1998. http://dx.doi.org/10.1016/s0735-8210(98)80003-4.

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Kuehne, Martin E., and István Markó. "Chapter 2 Syntheses of Vinblastine-Type Alkaloids." In The Alkaloids: Chemistry and Pharmacology. Elsevier, 1990. http://dx.doi.org/10.1016/s0099-9598(08)60093-0.

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Lopchuk, Justin M. "Recent Advances in the Synthesis of Aspidosperma-Type Alkaloids." In Progress in Heterocyclic Chemistry. Elsevier, 2011. http://dx.doi.org/10.1016/b978-0-08-096805-6.00001-2.

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Toyooka, Naoki, Maiko Okumura, and Hideo Nemoto. "Stereodivergent Process for the Synthesis of the Decahydroquinoline-type Dendrobated Alkaloids." In 19th International Congress on Heterocyclic Chemistry. Elsevier, 2003. http://dx.doi.org/10.1016/b978-0-08-044304-1.50336-1.

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Toyooka, Naoki, and Hideo Nemoto. "Synthetic Studies on Biologically Active Alkaloids Starting From Lactam-Type Chiral Building Blocks." In Bioactive Natural Products (Part J). Elsevier, 2003. http://dx.doi.org/10.1016/s1572-5995(03)80012-1.

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Conference papers on the topic "Calyciphylline A type alkaloids"

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El Faras, Wafaa. "Great benefits of Conocarpus erectus." In The 8th International Conference of Biotechnology, Environment and Engineering Sciences. SRO media, 2020. http://dx.doi.org/10.46617/icbe8006.

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Plants still an important source of omega oils that help to healthy for human and animals. Fresh leaves, stem, flower and fruits samples from Conocarpus erectus family Combretaceae has been analyzed using (GLC) Gas and liquid chromatography. The results indicated high levels of Omega oils which related to growth of nerve cells in brain. PH of fresh leaves determined and alkaloids with 8.2 which could help patients of diabetic type II
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