Relevant bibliographies by topics / Tropane ring

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  2. Dissertations / Theses
  3. Book chapters

Academic literature on the topic 'Tropane ring'

Author: Grafiati
Published: 5 June 2025
Last updated: 2 August 2025

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Journal articles on the topic "Tropane ring"

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Kluza, Anna, Zuzanna Wojdyla, Beata Mrugala та ін. "Regioselectivity of hyoscyamine 6β-hydroxylase-catalysed hydroxylation as revealed by high-resolution structural information and QM/MM calculations". Dalton Transactions 49, № 14 (2020): 4454–69. http://dx.doi.org/10.1039/d0dt00302f.

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Martin, Stephen F. "Ring-closing metathesis: A facile construct for alkaloid synthesis." Pure and Applied Chemistry 77, no. 7 (2005): 1207–12. http://dx.doi.org/10.1351/pac200577071207.

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Ring-closing metathesis has been found to be a highly effective reaction for the synthesis of functionalized, bridged nitrogen heterocycles. The utility of the process has been established in several case studies, including a facile synthesis of the tropane ring system and efficient, enantioselective syntheses of the natural products (–)-peduncularine and (+)-anatoxin-a.
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Duran-Patron, Rosa, David O’Hagan, John T. G. Hamilton, and Chi W. Wong. "Biosynthetic studies on the tropane ring system of the tropane alkaloids from Datura stramonium." Phytochemistry 53, no. 7 (2000): 777–84. http://dx.doi.org/10.1016/s0031-9422(00)00022-4.

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Turgunov, Kambarali Kuchkarovich, Dilfuza Kadirova, Rasul Okmanov, Salima Fazilovna Aripova, and Bakhodir Tashkhodjaev. "Stereochemistry of tropane alkaloid of convolvine and their derivatives." European Journal of Chemistry 10, no. 4 (2019): 376–80. http://dx.doi.org/10.5155/eurjchem.10.4.376-380.1909.

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Structures of alkaloid convolvine (1) isolated from Convolvulus subhirsutus and its derivatives-convolamine(N-methylconvolvine) (2) and hydrochloride of N-benzylconvolvine (3) have been determined by single crystal X-ray diffraction technique. Compounds were crystallized in monoclinic space groups having four molecules in unit cell. All compounds contain a bicyclic ring system of tropane, where piperidine rings in all case adopt chair conformation. Hydrogen atom and methyl- and benzyl-substituents located in nitrogen atom of studied compounds occupy equatorial positions. The substituent of tro
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Griffith, Daniel R., and Aaron H. Shoemaker. "Synthetic Approaches to Non-Tropane, Bridged, Azapolycyclic Ring Systems Containing Seven-Membered Carbocycles." Synthesis 53, no. 01 (2020): 65–78. http://dx.doi.org/10.1055/s-0040-1707385.

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AbstractThis Short Review highlights various synthetic approaches to bridged azabicyclic ring systems containing seven-membered carbocyclic rings. Such ring systems are common to a number of biologically active natural products. The seven-membered ring in such systems is generally formed in one of four ways: 1) cyclization of an acyclic precursor; 2) ring expansion or rearrangement of a different ring size; 3) cycloaddition; and 4) use of a synthetic building block with the seven-membered ring already present. Representative examples of each approach from both total synthesis and methodologica
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Nocquet, Pierre-Antoine, and Till Opatz. "Total Synthesis of (±)-Scopolamine: Challenges of the Tropane Ring." European Journal of Organic Chemistry 2016, no. 6 (2016): 1156–64. http://dx.doi.org/10.1002/ejoc.201501430.

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Majewski, Marek, Ryszard Lazny, and Agnieszka Ulaczyk. "Enantioselective ring opening of tropinone. A new entry into tropane alkaloids." Canadian Journal of Chemistry 75, no. 6 (1997): 754–61. http://dx.doi.org/10.1139/v97-091.

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The lithium enolate of tropinone reacts with alkyl chloroformates to give 6-N-carboalkoxy-N-methyl-2-cycloheptenones (4). These compounds can be produced enantioselectively, in up to 95% ee, if chiral lithium amides (derived from optically pure amines 5–7) are used for deprotonation of tropinone in the presence of additives. The effect of additives such as LiCl, LiBr, LiF, LiClO4, CeCl3, ZnCl2, LiOH, TMEDA, HMPA, and DMPU on enantioselectivity of this deprotonation–ring opening sequence varies from slight to very large depending on the chiral amide – additive combination. Especially large incr
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Kohnen-Johannsen, Kathrin, and Oliver Kayser. "Tropane Alkaloids: Chemistry, Pharmacology, Biosynthesis and Production." Molecules 24, no. 4 (2019): 796. http://dx.doi.org/10.3390/molecules24040796.

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Tropane alkaloids (TA) are valuable secondary plant metabolites which are mostly found in high concentrations in the Solanaceae and Erythroxylaceae families. The TAs, which are characterized by their unique bicyclic tropane ring system, can be divided into three major groups: hyoscyamine and scopolamine, cocaine and calystegines. Although all TAs have the same basic structure, they differ immensely in their biological, chemical and pharmacological properties. Scopolamine, also known as hyoscine, has the largest legitimate market as a pharmacological agent due to its treatment of nausea, vomiti
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Keverline-Frantz, Kathryn I., John W. Boja, Michael J. Kuhar, et al. "Synthesis and Ligand Binding of Tropane Ring Analogues of Paroxetine." Journal of Medicinal Chemistry 48, no. 1 (2005): 336. http://dx.doi.org/10.1021/jm040189f.

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Keverline-Frantz, Kathryn I., John W. Boja, Michael J. Kuhar, et al. "Synthesis and Ligand Binding of Tropane Ring Analogues of Paroxetine." Journal of Medicinal Chemistry 41, no. 2 (1998): 247–57. http://dx.doi.org/10.1021/jm970669p.

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Dissertations / Theses on the topic "Tropane ring"

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Justice, David E. "A synthetic study of the tropane and homotropane ring systems." Thesis, University of Leicester, 1995. http://hdl.handle.net/2381/33769.

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1,4-Functionalisation of cyclohepta-l,3-diene using a nitroso-cycloaddition strategy provided precursors which were converted into the N-methyl-8-azabicyclo- [3.2.1]octane (tropane) ring system. Cycloocta-1,3-diene was used as the starting material to prepare precursors to the N-methyl-9-azabicyclo[4.2.1]nonane (homo-tropane) ring system. Homotropane has been constructed, either with or without a bridgehead substituent, using mercury-mediated cyclisation of nitrogen onto an sp2 carbon centre. The versatile N-alkoxycarbonyl protecting group was employed to synthesise the corresponding norhomotr
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Astle, Christopher John. "The synthesis of tropane alkaloids using ring closing and cross metathesis." Thesis, University of Bristol, 2004. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.408999.

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Book chapters on the topic "Tropane ring"

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"Alkaloids." In Chemical Diversity of Plant Specialized Metabolites. Royal Society of Chemistry, 2023. http://dx.doi.org/10.1039/9781837671472-00218.

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Alkaloids are organic compounds containing nitrogen usually in the heterocyclic ring. True alkaloids are derived from different amino acids. Tropane alkaloids, pyrrolidine alkaloids and pyrrolizidine alkaloids are derived from the amino acid ornithine; pyridine, piperidine, quinolizidine, indolizidine, and Lycopodium alkaloids from aspartate/lysine; isoquinoline alkaloids from tyrosine; imidazole alkaloids from histidine; indole and quinoline alkaloids from tryptophan; and quinazoline alkaloids are anthranilic acid derived. Protoalkaloids are also derived from amino acids, but the nitrogen ato
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Lambert, Tristan H. "Total Synthesis of C–O Natural Products." In Organic Synthesis. Oxford University Press, 2017. http://dx.doi.org/10.1093/oso/9780190646165.003.0049.

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Weiping Tang at the University of Wisconsin, Madison reported (J. Am. Chem. Soc. 2013, 135, 12434) the total synthesis of the tropone-containing norditerpenes hain­anolidol 6 and harringtonolide 7 by making use of a strategic [5+2] oxidopyrylium cycloaddition. First, the known ketone 1 was converted through a number of steps to cycloaddition precursor 2. Treatment with DBU then effected the key cycloaddition to furnish the complex polycyclic compound 3. Additional manipulations revealed struc­ture 4 with the lactone ring in place. The tropone ring of the natural structures was con­structed by
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Fischer, Gunther. "Tropones, Tropolones, and Tropylium Salts with Fused Heterocyclic Rings." In Advances in Heterocyclic Chemistry. Elsevier, 1996. http://dx.doi.org/10.1016/s0065-2725(08)60308-6.

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"Alkaloids I." In Natural Product Biosynthesis. The Royal Society of Chemistry, 2022. http://dx.doi.org/10.1039/bk9781839165641-00264.

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Historically, alkaloids were defined by their alternating solubilities in acidic aqueous solutions, as amine cations, and in organic solvents, as neutral amines, allowing early purification of otherwise unrelated scaffolds, driven by the protonation/deprotonation equilibria. Some 27 000 alkaloid natural products have been purified and characterized, with structures ranging from coniine to caffeine, piperine, quinine, morphine, scopolamine, tubocurarine, and strychnine. Amino acids are the building blocks for common classes of alkaloids, such as those listed above, by early decarboxylation to a
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Fischer, Gunther. "Tropones, Tropolones, and Tropylium Salts with Fused Heterocyclic Rings Part I: Synthesis**Respectfully dedicated to the Nestor of seven-membered-ring chemistry, Professor Tetsuo Nozoe." In Advances in Heterocyclic Chemistry. Elsevier, 1995. http://dx.doi.org/10.1016/s0065-2725(08)60171-3.

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Dawson, Clara. "Poetic Style: Jewellery and Value in Victorian Poetry." In Victorian Poetry and the Culture of Evaluation. Oxford University Press, 2020. http://dx.doi.org/10.1093/oso/9780198856108.003.0003.

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Chapter 2 examines evaluations of poetic style from the 1830s to the 1860s and argues for the existence of a jewelled style which crosses over the genres of the album-book or anthology, the single-author volume and the periodical review. The intersection of raw economic value with fashionable display and artistic craft that coalesces around the jewel overlaps with the commodification of poetry as it circulates in the literary market. Jewellery becomes an important trope in both reviews and poetry, serving as a metaphor to express and calculate the kind of value that literature could offer. As
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Taber, Douglass F. "C–N Ring Construction: The Glorius Synthesis of ent-Monomorine." In Organic Synthesis. Oxford University Press, 2017. http://dx.doi.org/10.1093/oso/9780190646165.003.0054.

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Ryan Gilmour of the Westfälische Wilhelms-Universität Münster employed (Chem. Eur. J. 2014, 20, 794) an organocatalyst to direct the enantioselective aziridination of 1 to 2. Vanessa Kar-Yan Lo and Chi-Ming Che of Hong Kong University devised (Angew. Chem. Int. Ed. 2014, 53, 2982) a Ru catalyst for the enantioselective aziridi­nation (not illustrated) of terminal alkenes. Shu-Li You of the Shanghai Institute of Organic Chemistry and Aiwen Lei of Wuhan University described (Angew. Chem. Int. Ed. 2014, 53, 2443) the Pd-mediated carbonylation of 3 to the β-lactam 4. Professor You reported (J. Am.
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Nesbitt, Eleanor. "Deg Tegh Fateh: Metal as Material and Metaphor in Sikh Tradition." In Soulless Matter, Seats of Energy: Metals, Gems and Minerals in South Asian Traditions. Equinox Publishing, 2016. http://dx.doi.org/10.1558/equinox.29657.

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Today’s Khalsa (nucleus of Sikhs committed to a shared discipline) is a complex of several strands of tradition, each represented vigorously among globally connected Sikh youth. Iron holds a central place in two of these – the Akhand Kirtani Jatha and the Nihangs. Thus, the Akhand Kirtani Jatha’s code of discipline requires the maintenance of sarab loh (literally ‘all iron’), in other words the practice of only using utensils that are made of iron and of only eating from an iron thali (tray, platter). In the case of the Nihangs, their distinctiveness involves a prominent respect for weaponry:
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