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Journal articles on the topic 'Sarcophagine cage'

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Author: Grafiati

Published: 4 June 2021

Last updated: 31 January 2023

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1

Paterson, Brett M., Gojko Buncic, Lachlan E. McInnes, Peter Roselt, Carleen Cullinane, David S. Binns, Charmaine M. Jeffery, Roger I. Price, Rodney J. Hicks, and Paul S. Donnelly. "Bifunctional 64Cu-labelled macrobicyclic cage amine isothiocyanates for immuno-positron emission tomography." Dalton Transactions 44, no. 11 (2015): 4901–9. http://dx.doi.org/10.1039/c4dt02983f.

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2

Ling, Irene, Alexandre N. Sobolev, Rauzah Hashim, and Jack M. Harrowfield. "Stereochemistry of cage amine complexes – probing the ligand conformational flexibility with hydrogen bonds." CrystEngComm 16, no. 48 (2014): 11058–63. http://dx.doi.org/10.1039/c4ce01980f.

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Structure determinations for some Co(iii) sarcophagine complexes show that there is no evidence that the H-bonding involving the NH centres of the complex cations is influenced by electronic effects due to the substituents.

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3

Bottomley, GA, IJ Clark, II Creaser, LM Engelhardt, RJ Geue, KS Hagen, JM Harrowfield, et al. "The Synthesis and Structure of Encapsulating Ligands: Properties of Bicyclic Hexamines." Australian Journal of Chemistry 47, no. 1 (1994): 143. http://dx.doi.org/10.1071/ch9940143.

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Template syntheses based on tris (ethane-1,2-diamine)cobalt(III) lead to cobalt(III) complexes of cage hexamines of the ' sarcophagine ' type ( sarcophagine = sar = 3,6,10,13,16,19- hexaazabicyclo [6.6.6] icosane ) rapidly and in high yield. Reduction of these species to their cobalt(II) forms enables the ligands to be removed in concentrated acids at elevated temperatures, and in hot aqueous solutions containing excess cyanide ion. The free sarcophagine and 1,8-diaminosarcophagine [(NH2)2sar or diamsar] ligands are strong bases, accepting up to four and five protons, respectively, in aqueous solution. In chloride medium, I = 1.0, at 298 K, pK1 = 11.95, pK2 = 10.33, pK3 = 7.17, pK4 ≈ 0 for sarcophagine , and pK1 = 11.44, pK2 = 9.64, pK3 = 6.49, pK4 = 5.48, pK5 ≈ 0 for diaminosarcophagine , with very similar values being found for triflate medium. Crystal structure determinations for both free bases, the chloride, sulfate, perchlorate and nitrate salts of diamsar , the complex of zinc chloride with sar, and the magnesium nitrate complex with diamsar show remarkably small variations in the cavity defined by the bicyclic ligands, though relatively subtle bond length and bond angle changes can be rationalized in terms of the effects of proton and metal ion binding. Exhaustive methylation of sarcophagine produces the highly lipophilic, hexatertiary base hexamethylsarcophagine , which, in the solid state, adopts quite different conformations and nitrogen-atom configurations to those of sar itself. All the ligands rapidly form metal ion complexes of generally exceptional kinetic and thermodynamic stability.

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4

Sargeson, Alan M., and Peter A. Lay. "Dependence of the Properties of Cobalt(III) Cage Complex as a Function of the Derivatization of Amine Substituents." Australian Journal of Chemistry 62, no. 10 (2009): 1280. http://dx.doi.org/10.1071/ch09368.

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Control of redox properties of cobalt macrobicyclic hexaamine (cage) complexes by substituent modification is important for their use as electron-transfer agents, and the resultant derivatives can also change the lipophilicity of the complexes for a variety of biological and other applications. Such derivatization is also important for incorporating cage complexes into a range of redoxactive conjugates. Here, the derivatization of the amine groups in the 1 and 8 positions of [Co(sar)]3+ (sar = sarcophagine = 3,6,10,13,16,19-hexaazabicyclo[6.6.6]icosane) are reported. The synthesis and properties of methylamide (from the reactions with acetic anhydride), arylimine (from Schiff base reactions), benzylamine, phthalimido, and tosylate derivatives are described. These reactions provide synthons that have the potential to act as precursors for building a range of conjugates containing metal cage complexes, including dimers. The effects of the substituents on the ligand conformations, which affect other chemical and physical properties of the cage complexes, are discussed.

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5

Koutsantonis, George A., Jackson Lee, Nigel A. Lengkeek, Gareth L. Nealon, Brian W. Skelton, and Allan H. White. "Synthesis and characterisation of trinuclear metal complexes derived from carboxymethyl-substituted sarcophagine macrobicyclic cage amines." Journal of Inclusion Phenomena and Macrocyclic Chemistry 66, no. 1-2 (August 1, 2009): 61–66. http://dx.doi.org/10.1007/s10847-009-9634-6.

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6

Li, Guoquan, Xinlu Wang, Shu Zong, Jing Wang, Peter S. Conti, and Kai Chen. "MicroPET Imaging of CD13 Expression Using a 64Cu-Labeled Dimeric NGR Peptide Based on Sarcophagine Cage." Molecular Pharmaceutics 11, no. 11 (July 30, 2014): 3938–46. http://dx.doi.org/10.1021/mp500354x.

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7

Liu, Shuanglong, Dan Li, Chiun-Wei Huang, Li-Peng Yap, Ryan Park, Hong Shan, Zibo Li, and Peter S. Conti. "Efficient Construction of PET/Fluorescence Probe Based on Sarcophagine Cage: An Opportunity to Integrate Diagnosis with Treatment." Molecular Imaging and Biology 14, no. 6 (April 3, 2012): 718–24. http://dx.doi.org/10.1007/s11307-012-0557-z.

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8

Engelhardt, LM, JM Harrowfield, AM Sargeson, and AH White. "Synthesis and Structure of (1,8-Diammonio-3,6,10,13,16,19-hexaazabicyclo[6.6.6]icosane)-nickel(II) Tetrachloride Monohydrate." Australian Journal of Chemistry 46, no. 1 (1993): 127. http://dx.doi.org/10.1071/ch9930127.

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The synthesis and single-crystal X-ray structure determination of the title compound are described. Crystals are monoclinic, P 21, a 16.164(9), b 8.277(3), c 8.829(4) Ǻ, β 102.86(4)°, Z 2; 2666 independent 'observed' diffractometer data [I > 3σ(I)] were refined to a residual of 0.045. The cation is unusual amongst complexes of sarcophagine (3,6,10,13,16,19-hexaazabicyclo[6.6.6]icosane) cage amines in adopting a lel2ob conformation, seemingly in response to hydrogen bonding/crystal packing forces. In consequence, unlike the tetranitrate analogue in which Ni-N bond distances are dispersed over a narrow range (2.097(5)-2.119(5) Ǻ; mean 2.109 Ǻ], the coordination sphere is more distorted with one pair of Ni-N distances, cis to each other, being short at 2.081(5) and 2.086(5) Ǻ, while the other four are long, ranging from 2.116(5) to 2.135(5) Ǻ, the mean of this array being 2.111 Ǻ.

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9

Creaser, I. I., J. M. Harrowfield, G. A. Lawrance, W. Mulac, D. Sangster, A. M. Sargeson, K. Schmidt, and J. C. Sullivan. "Rapid Reduction of [CuII(Sarcophagine)]2+ Ion and Elimination of Cu1 From the Cage: A Pulse Radiolysis Study." Journal of Coordination Chemistry 23, no. 1-4 (June 1991): 389–95. http://dx.doi.org/10.1080/00958979109408266.

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10

Anderson, PA, II Creaser, C. Dean, JM Harrowfield, E. Horn, LL Martin, AM Sargeson, MR Snow, and ERT Tiekink. "Synthesis, Resolution and Kinetics of Electron Self-Exchange of High-Spin Manganese(II)/(III) Cage Complexes." Australian Journal of Chemistry 46, no. 4 (1993): 449. http://dx.doi.org/10.1071/ch9930449.

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The ligand sarcophagine ( sar = 3,6,10,13,16,19-hexaazabicyclo[6.6.6] icosane ) rapidly reacts with [ Mn (OH2)6]2+ to form the nearly colourless [ Mn ( sar )]2+ ion, which can readily be oxidized to the bright orange [Mn ( sar )]3+ ion (E°′+0.53 V v. n.h.e. in 0.1 mol l-1 CF3SO3H at 295 K). A single-crystal structure determination on [ Mn ( sar )](NO3)3, space group I 42d, a 15.549(6), c 19.014(6) Ǻ, R 0.051, Rw 0.049 for 608 'observed' reflections, shows the coordination geometry of the manganese(III) ion, with site symmetry 2, to be subject to a Jahn-Teller distortion, giving three pairs of Mn -N bond lengths of 2.18(1), 2.13(1) and 2.08(1)Ǻ. The [ Mn ( sar )]3+ ion is stable in strongly acidic aqueous solutions, but in solutions of pH > 3 undergoes deprotonation and subsequent disproportionation reactions. The manganese(II) complex ion is less stable in acidic solutions, undergoing hydrolysis at a rate showing a first-order dependence on both proton and chloride ion concentrations. Both [ Mn ( sar )]2+ and [ Mn ( sar )]3+ can be obtained in chiral forms, and the rate constant for electron self-exchange obtained by polarimetric measurements on solutions of mixtures of [ Mn ( sar )]2+ and [ Mn ( sar )]3+ of opposite chirality is 30 dm3 mol-1s-1 at 298 K, I = 0.1 M.

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11

Creaser, II, LM Engelhardt, JM Harrowfield, AM Sargeson, BW Skelton, and AH White. "Syntheses and Structures of Manganese(II) and Manganese(III) Nitrate Diaminosarcophagine Complexes." Australian Journal of Chemistry 46, no. 4 (1993): 465. http://dx.doi.org/10.1071/ch9930465.

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The syntheses of [ Mn ((NH3)2sar)](NO3)4.H2O and [ Mn ((NH3)2sar)](NO3)5.2H2O, manganese(II) and manganese(III) complexes of the cage amine ligand diaminosarcophagine ( di-aminosarcophagine = (NH2)2sar = 1,8-diamino-3,6,10,13,16,19-hexaazabicyclo[6.6.6] icosane ) in its diprotonated form are recorded, together with their single-crystal X-ray structure determinations at c. 295 K. The monoclinic P21 array of the manganese(II) complex (a 12.386(5), b 12.431(4), c 8.598(4) Ǻ, β 93.89(4)°, V 1321(1) Ǻ3,Z 2) is archetypical for similar complexes of a wide variety of transition metals; for the present determination, R was 0.027 for 2013 'observed' (I > 3σ(I)) reflections. The manganese(III) complex is monoclinic C 2/c, a 10.744(2), b 13.294(4), c 20.462(9) Ǻ, β 102.38(3)°, Z 4; R was 0.055 for 1629 'observed' reflections. Both structures show the six secondary nitrogen atoms of the ligand to be bound to the manganese ion in a configuration approximately halfway between a trigonal prism and an octahedron. The ligand is in the lel3 conformation. In the first complex, Mn -N distances, appropriate to high-spin manganese(II), range from 2.228(3) to 2.253(3) Ǻ, mean 2.238 Ǻ; in the second, surprisingly, the distances are even more closely ranged (unlike those of the sarcophagine analogue of the previous paper), 2.115(4)-2.127(4) Ǻ, the mean (2.122 Ǻ) being closely comparable to that recorded for the sar analogue, and show no appreciable variation attributable to the expected Jahn-Teller effect.

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12

Liu, Shuanglong, Zibo Li, and Peter Conti. "Development of Multi-Functional Chelators Based on Sarcophagine Cages." Molecules 19, no. 4 (April 3, 2014): 4246–55. http://dx.doi.org/10.3390/molecules19044246.

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13

Harrowfield, Jack M., George A. Koutsantonis, Heinz-Bernhard Kraatz, Gareth L. Nealon, Grzegorz A. Orlowski, Brian W. Skelton, and Allan H. White. "Cages on Surfaces: Thiol Functionalisation of CoIII Sarcophagine Complexes." European Journal of Inorganic Chemistry 2007, no. 2 (January 2007): 263–78. http://dx.doi.org/10.1002/ejic.200600626.

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14

Briceño-Vela, Deimy, Florencio Ramírez-Cruz, and Shirley Madeleine Valderrama-Alfaro. "Cadaverous entomofauna associated with the incinerated remains of Sus scrofa domestica L., in the town of Chuyugual, La Libertad, Peru." Manglar 19, no. 3 (October 3, 2022): 221–26. http://dx.doi.org/10.17268/manglar.2022.027.

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The determination of the postmortem interval through entomological evidence is a widely used method for clarifying crimes in forensic entomology. The objective of this research was to determine the cadaveric entomofauna and the ecological biodiversity associated with the remains of Sus scrofa domestica L. The work was carried out in the town of Chuyugual, La Libertad, a specimen of "pig" of 15 kg, was incinerated with diesel oil and protected with a metal cage. The insects were collected using conventional entomological techniques, species were determined with specialized taxonomic keys; for the determination of the ecological value of the cadaverous entomofauna and the most representative families were used the indices of Margalef, Simpson, Shanon and Pielou. The entomofauna found was distributed in 2 orders, 7 families, 12 species and 4 morphotypes. The 35% of relative abundance corresponds to the Calliphoridae family, 23% to the Sarcophagidae, 18% to the Staphilinidae and 6% to the Musidae, Fannidae, Dermestidae and Silphidae families. Biodiversity is high in dominance indices and the Pielou index; however, it is low in Shanon's specific wealth and equity indices. The Calliphoridae family has high diversity indexes; while the Sarcophagidae and Staphilinidae show moderate and low rates, respectively. It was concluded that the entomofauna found in the decomposition of Sus scrofa domestica belong to the order Diptera (Calliphoridae, Sarcophagidae, Muscidae and Fannidae) and Coleoptera (Staphilinidae, Silphidae and Dermestidae).

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15

Mendez, Julio. "Ein Fall von Räuberei bei überirdisch nistenden tropischen Termiten (Isoptera: Termitidae) durch zwei Fleischfliegenarten (Diptera: Sarcophagidae)." Entomologia Generalis 34, no. 1-2 (November 29, 2012): 156–60. http://dx.doi.org/10.1127/entom.gen/34/2012/156.

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16

Cavallari, Maria Luiza, Fabio Navarro Baltazar, Silvio Shigueo Nihei, Daniel Romero Muñoz, and José Eduardo Tolezano. "Dipterofauna Associated withSus scrofaLinné, 1758, Carcasses in Urban and Coastal Regions of São Paulo State, Brazil." Psyche: A Journal of Entomology 2015 (2015): 1–12. http://dx.doi.org/10.1155/2015/983980.

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Cadaverous entomofauna successions vary according to the region, environment, and climate, and such differences may occur within the same country due to seasonal variations. The present study aimed to analyze and compare the dipterofauna that visit or colonize carcasses in the urban and coastal areas of São Paulo, Brazil, during summer and winter seasons. Four swine (Sus scrofaLinné, 1758) carcasses of approximately 12 kg were used. The animals were previously euthanized and then placed in metal cages covered with a flight intercept trap (Shannon, modified). In total, 10,495 flies from 39 families were collected, with 15 species belonging to the Calliphoridae family, 14 species belonging to the Fanniidae family, 43 species belonging to the Muscidae family, and 22 species belonging to the Sarcophagidae family. Flies from these four families visited all carcasses; however, they did not show the highest visitation frequencies in all of the trials. Species variations occurred between the experiments that were performed at different locations and in different seasons. Furthermore, difference in the number of insects attracted to each stage of decomposition was observed. In addition to the four families highlighted above, the families Phoridae, Sepsidae, Otitidae, and Piophilidae were observed in all carcasses.

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17

Silva, José Orlando A., Leandro S. Brasil, Caroline C. De-Souza, and Fernando S. Carvalho-Filho. "Helicobia neuzalmeidae sp. nov., A New Species of Sarcophagidae (Diptera) Reared From a Pig Carcass in the Brazilian Savanna." Journal of Medical Entomology, July 28, 2022. http://dx.doi.org/10.1093/jme/tjac098.

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Abstract A new species of Sarcophagidae (Diptera) in the genus Helicobia Coquillett, Helicobia neuzalmeidae sp. nov., is described based on two male specimens obtained from pig carcasses in savanna-like vegetation in northeastern Brazil (state of Maranhão) during a forensic study. The holotype was obtained from a larva that abandoned the pig carcass to pupate, whereas the paratype was collected with a trap placed above the cage containing the carcass. This is the first record of a Helicobia species reared from a vertebrate carcass.

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18

Gesztelyi, Tamás. "Médeia az antik képzőművészetben." Studia Litteraria 56, no. 1-4 (January 1, 2017). http://dx.doi.org/10.37415/studia/2017/56/4104.

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Images of Medea were closely linked to sepulchral thoughts from the very beginning, but this meaning was, from time to time, carried by a different motif of her story. In the age of archaic and partly classical style it was the magic of rejuvenation that represented the thought of overcoming death. Obtaining the Golden Fleece as depicted on the late classical South Italian vases as well as on the stucco of early imperial Basilica Sotterranea can be interpreted as a motif of redemption. Imagery of infanticide and rising on a dragon-drawn carriage also appears on South–Italian vases. Just like with funerary objects, sepulchral thoughts cannot be denied in these cases, either, and Medea, holding her dead child depicted on a sculpture fragment from Tarentum is definitely part of a sepulchre. In the Roman imperial period a group of sarcophagi and provincial sepulchres represented Medea, the child-murderer. While several works have been dedicated to unravelling the meaning of the Medea sarcophagi, nearly none has examined the interpretation of the carvings that appeared in provincial art. This is what we have attempted to do while recognising the influence of Euripides’ work in the background, and identifying Medea as a figure embodying several meanings.

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