PUB - Publikationen an der Universität Bielefeld

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• [31]
  

  2014 | Zeitschriftenaufsatz | Veröffentlicht | PUB-ID: 2677434

  Kuck, D., Salameh, L.C., Onwuka, K.I., Letzel, M.: Unidirectional triple hydrogen rearrangement in the radical cations of electron-rich 3-aryl-1-propanols: further evidence and limitation. European Journal of Mass Spectrometry. 20, 51-61 (2014).

  PUB | DOI | WoS | PubMed | Europe PMC
   
• [30]
  

  2013 | Zeitschriftenaufsatz | Veröffentlicht | PUB-ID: 2578727

  Letzel, M., Barth, D., Kuck, D., Grützmacher, H.-F., Kim, S.Y., Yim, M.K., Choe, J.C.: Unimolecular reactions of gaseous picoline radical cations. A new experimental and computational study. International Journal Of Mass Spectrometry. 336, 1-16 (2013).

  PUB | DOI | WoS
   
• [29]
  

  2012 | Zeitschriftenaufsatz | Veröffentlicht | PUB-ID: 2501810

  Fraschetti, C., Letzel, M., Filippi, A., Speranza, M., Mattay, J.: Enantioselective supramolecular devices in the gas phase. Resorcin[4] arene as a model system. Beilstein Journal of Organic Chemistry. 8, 539-550 (2012).

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• [28]
  

  2012 | Zeitschriftenaufsatz | Veröffentlicht | PUB-ID: 2474444

  Fraschetti, C., Letzel, M., Paletta, M., Mattay, J., Speranza, M., Filippi, A., Aschi, M., Rozhenko, A.B.: Cyclochiral resorcin[4]arenes as effective enantioselectors in the gas phase. Journal of Mass Spectrometry. 47, 72-78 (2012).

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• [27]
  

  2012 | Zeitschriftenaufsatz | Veröffentlicht | PUB-ID: 2453619

  Amick, A.W., Hoegg, E., Harrison, S., Houston, K.R., Hark, R.R., Reingold, I.D., Barth, D., Letzel, M., Kuck, D.: Site-specific Hydrogen Exchange and Hydrogen Transfer Processes Preceding the Fragmentation of Long-lived Radical Cations of Ethyl Dihydrocinnamate and Related Arylalkanoates. International Journal of Mass Spectrometry. 316-318, 206-215 (2012).

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• [26]
  

  2011 | Zeitschriftenaufsatz | Veröffentlicht | PUB-ID: 2094264

  Botta, B., Fraschetti, C., D'Acquarica, I., Sacco, F., Mattay, J., Letzel, M., Speranza, M.: Unprecedented gas-phase chiroselective logic gates. Organic & Biomolecular Chemistry. 9, 1717-1719 (2011).

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• [25]
  

  2010 | Zeitschriftenaufsatz | Veröffentlicht | PUB-ID: 1795835

  Krohn, K., Ahmed, I., John, M., Letzel, M., Kuck, D.: Stereoselective Synthesis of Benzylated Prodelphinidins and Their Diastereomers with Use of the Mitsunobu Reaction in the Preparation of Their Gallocatechin Precursors. EUROPEAN JOURNAL OF ORGANIC CHEMISTRY. 2010, 2544-2554 (2010).

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• [24]
  

  2009 | Zeitschriftenaufsatz | Veröffentlicht | PUB-ID: 1589018

  Botta, B., Fraschetti, C., D'Acquarica, I., Speranza, M., Novara, F.R., Mattay, J., Letzel, M.: Gas-Phase Enantioselectivity of Chiral N-Linked Peptidoresorc[4]arene Isomers toward Dipeptides. Journal of Physical Chemistry A. 113, 14625-14629 (2009).

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• [23]
  

  2009 | Zeitschriftenaufsatz | Veröffentlicht | PUB-ID: 1634276

  Botta, B., Fraschetti, C., Novara, F.R., Tafi, A., Sacco, F., Mannina, L., Sobolev, A.P., Mattay, J., Letzel, M., Speranza, M.: Interactions of vinca alkaloid subunits with chiral amido[4]resorcinarenes: a dynamic, kinetic, and spectroscopic study. Organic & Biomolecular Chemistry. 7, 1798-1806 (2009).

  PUB | DOI | WoS | PubMed | Europe PMC
   
• [22]
  

  2009 | Zeitschriftenaufsatz | Veröffentlicht | PUB-ID: 1634738

  Sekiguchi, O., Meyer, V., Letzel, M., Kuck, D., Uggerud, E.: Energetics and reaction mechanisms for the competitive losses of H-2, CH4 and C2H4 from protonated methylbenzenes-implications to the methanol-to-hydrocarbons (MTH) process. EUROPEAN JOURNAL OF MASS SPECTROMETRY. 15, 167-181 (2009).

  PUB | DOI | WoS | PubMed | Europe PMC
   
• [21]
  

  2008 | Zeitschriftenaufsatz | Veröffentlicht | PUB-ID: 1636725

  Letzel, M., Schäfer, C., Novara, F.R., Speranza, M., Rozhenko, A.B., Schoeller, W., Mattay, J.: A kinetic study of guest displacement reactions on a host-guest complex with a photoswitchable calixarene. Journal of Mass Spectrometry. 43, 1553-1564 (2008).

  PUB | DOI | WoS | PubMed | Europe PMC
   
• [20]
  

  2008 | Zeitschriftenaufsatz | Veröffentlicht | PUB-ID: 1592768

  Igoli, J.O., Onyiriuka, S.O., Letzel, M., Nwaji, M.N., Gray, A.I.: Cassane diterpenoids from Lonchocarpus laxiflorus. NATURAL PRODUCT COMMUNICATIONS. 3, 5-10 (2008).

  PUB | WoS
   
• [19]
  

  2008 | Zeitschriftenaufsatz | Veröffentlicht | PUB-ID: 1587398

  Letzel, M., Grützmacher, H.-F., Stein, D., Grützmacher, H.: Trends in the reactions of gaseous phenyl pnictogen radical cations C6H5EH2 center dot+ (E=N, P, As). DALTON TRANSACTIONS. 3282-3291 (2008).

  PUB | DOI | WoS | PubMed | Europe PMC
   
• [18]
  

  2008 | Zeitschriftenaufsatz | Veröffentlicht | PUB-ID: 1586095

  Schröder, T., Brodbeck, R., Letzel, M., Mix, A., Schnatwinkel, B., Tonigold, M., Volkmer, D., Mattay, J.: A self-assembling metallosupramolecular cage based on cavitand-terpyridine subunits. TETRAHEDRON LETTERS. 49, 5939-5942 (2008).

  PUB | DOI | WoS
   
• [17]
  

  2007 | Report | Veröffentlicht | PUB-ID: 2308810

  Böcker, S., Letzel, M., Lipták, Z., Pervukhin, A.: Identifying metabolites with integer decomposition techniques, using only their mass spectrometric isotope patterns. Forschungsberichte der Technischen Fakultät, Abteilung Informationstechnik / Universität Bielefeld. Technical Faculty, Bielefeld University, Bielefeld (2007).

  PUB | PDF
   
• [16]
  

  2007 | Zeitschriftenaufsatz | Veröffentlicht | PUB-ID: 1630972

  Botta, B., D'Acquarica, F., Nevola, L., Sacco, F., Lopez, Z.V., Zappia, G., Fraschetti, C., Speranza, M., Tafi, A., Caporuscio, F., Letzel, M., Mattay, J.: Bis(diamido)-bridged basket resorcin[4]arenes as enantioselective receptors for amino acids and amines. European Journal of Organic Chemistry. 2007, 5995-6002 (2007).

  PUB | DOI | WoS
   
• [15]
  

  2006 | Zeitschriftenaufsatz | Veröffentlicht | PUB-ID: 1599664

  Letzel, M., Kirchhoff, D., Grützmacher, H.-F., Stein, D., Grützmacher, H.: Isomerization and fragmentation reactions of gaseous phenylarsane radical cations and phenylarsanyl cations. A study by tandem mass spectrometry and theoretical calculations. DALTON TRANSACTIONS. 2008-2016 (2006).

  PUB | DOI | WoS | PubMed | Europe PMC
   
• [14]
  

  2006 | Zeitschriftenaufsatz | Veröffentlicht | PUB-ID: 1596667

  Schäfer, C., Decker, B., Letzel, M., Novara, F., Eckel, R., Ros, R., Anselmetti, D., Mattay, J.: On the way to supramolecular photochemistry at the single-molecule level. Pure and Applied Chemistry. 78, 2247-2259 (2006).

  PUB | DOI | WoS
   
• [13]
  

  2006 | Zeitschriftenaufsatz | Veröffentlicht | PUB-ID: 1596638

  Rozhenko, A.B., Schoeller, W., Letzel, M., Decker, B., Agena, C., Mattay, J.: Calixarenes as hosts for ammonium cations: A quantum chemical study and mass-spectrometric investigations. Chemistry. A European Journal. 12, 8995-9000 (2006).

  PUB | DOI | WoS | PubMed | Europe PMC
   
• [12]
  

  2006 | Zeitschriftenaufsatz | Veröffentlicht | PUB-ID: 1599422

  Svelle, S., Bjorgen, M.A., Kolboe, S., Kuck, D., Letzel, M., Olsbye, U., Sekiguchi, O., Uggerud, E.: Intermediates in the methanol-to-hydrocarbons (MTH) reaction: a gas phase study of the unimolecular reactivity of multiply methylated benzenium cations. CATALYSIS LETTERS. 109, 25-35 (2006).

  PUB | DOI | WoS
   
• [11]
  

  2006 | Zeitschriftenaufsatz | Veröffentlicht | PUB-ID: 1598054

  Sekiguchi, O., Letzel, M., Kuck, D., Uggerud, E.: The unimolecular dissociation of protonated glyoxylic acid: Structure and dynamics of a step-by-step process. INTERNATIONAL JOURNAL OF MASS SPECTROMETRY. 255-256, 177-184 (2006).

  PUB | DOI | WoS
   
• [10]
  

  2005 | Zeitschriftenaufsatz | Veröffentlicht | PUB-ID: 1602825

  Schulte, T., Siegenthaler, K.O., Luftmann, H., Letzel, M., Studer, A.: Nitroxide-mediated polymerization of N-isopropylacrylamide: Electrospray ionization mass spectrometry, matrix-assisted laser desorption ionization mass spectrometry, and multiple-angle laser light scattering studies on nitroxide-terminated poly-N-isopropylacrylamides. MACROMOLECULES. 38, 6833-6840 (2005).

  PUB | DOI | WoS
   
• [9]
  

  2005 | Zeitschriftenaufsatz | Veröffentlicht | PUB-ID: 1601523

  Rozhenko, A.B., Schoeller, W., Letzel, M., Decker, B., Agena, C., Mattay, J.: Conformational features of calix[4]arenes with alkali metal cations: A quantum chemical investigation with density functional theory. Journal of Molecular Structure: THEOCHEM. 732, 7-20 (2005).

  PUB | DOI | WoS
   
• [8]
  

  2004 | Zeitschriftenaufsatz | Veröffentlicht | PUB-ID: 1605690

  Mehdizadeh, A., Letzel, M., Klaes, M., Agena, C., Mattay, J.: Chiral discrimination on the host-guest complexation of resorc[4]arenes with quarternary amines. EUROPEAN JOURNAL OF MASS SPECTROMETRY. 10, 649-655 (2004).

  PUB | DOI | WoS | PubMed | Europe PMC
   
• [7]
  

  2004 | Zeitschriftenaufsatz | Veröffentlicht | PUB-ID: 1607044

  Letzel, M., Decker, B., Rozhenko, A.B., Schoeller, W., Mattay, J.: Encapsulated guest molecules in the dimer of octahydroxypyridine[4]arene. JOURNAL OF THE AMERICAN CHEMICAL SOCIETY. 126, 9669-9674 (2004).

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• [6]
  

  2004 | Zeitschriftenaufsatz | Veröffentlicht | PUB-ID: 1953787

  Oley, M., Letzel, M., Ragg, H.: Inhibition of furin by serpin Spn4A from Drosophila melanogaster. FEBS Letters. 577, 165-169 (2004).

  PUB | DOI | WoS | PubMed | Europe PMC
   
• [5]
  

  2003 | Zeitschriftenaufsatz | Veröffentlicht | PUB-ID: 1610139

  Leitao, E.A., Bittencourt, V.C.B., Haido, R.M.T., Valente, A.P., Peter-Katalinic, J., Letzel, M., de Souza, L.M., Barreto-Bergter, E.: beta-Galactofuranose-containing O-linked oligosaccharides present in the cell wall peptidogalactomannan of Aspergillus fumigatus contain immunodominant epitopes. GLYCOBIOLOGY. 13, 681-692 (2003).

  PUB | DOI | WoS | PubMed | Europe PMC
   
• [4]
  

  2002 | Zeitschriftenaufsatz | Veröffentlicht | PUB-ID: 1614222

  Letzel, M., Grützmacher, H.-F., Furst, T., Mayer, K.K., Wiegrebe, W.: Functional group migration in benzaldoxime-O-n-propyl ether radical cation. INTERNATIONAL JOURNAL OF MASS SPECTROMETRY. 217, 153-168 (2002).

  PUB | DOI | WoS
   
• [3]
  

  2002 | Zeitschriftenaufsatz | Veröffentlicht | PUB-ID: 1615393

  Letzel, M., Agena, C., Mattay, J.: Investigation of homo- and heterodimer alkali metal cation complexes of resorc[4]arenes by electrospray ionization mass spectrometry. JOURNAL OF MASS SPECTROMETRY. 37, 63-68 (2002).

  PUB | DOI | WoS | PubMed | Europe PMC
   
• [2]
  

  2002 | Zeitschriftenaufsatz | Veröffentlicht | PUB-ID: 1615079

  Müller, A., Diemann, E., Shah, S.Q.N., Kuhlmann, C., Letzel, M.: Soccer-playing metal oxide giant spheres: a first step towards patterning structurally well defined nano-object collectives. CHEMICAL COMMUNICATIONS. 440-441 (2002).

  PUB | DOI | WoS | PubMed | Europe PMC
   
• [1]
  

  2001 | Zeitschriftenaufsatz | Veröffentlicht | PUB-ID: 1616873

  Letzel, M., Agena, C., Mattay, J.: Calibration of electrospray mass spectrometers with rccc-2,8,14,20-tetra-n-octyl-5,11,17,23-tetrahydroxyresorc[4]arene in the high mass range up to m/z 6000. EUROPEAN JOURNAL OF MASS SPECTROMETRY. 7, 35-38 (2001).

  PUB | DOI | WoS