Helvetica chimica acta

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  Año 2003, Vol. 86, Número 5

  • Graphical Abstract: HCA 5/2003

    págs. 1-11

    

  • Pentopyranosyl Oligonucleotide Systems. Communication No. 13 Communication No. 12: [1]. The paper is also communication No. 38 in the series ¿Chemistry of ¿-Aminonitriles'. For communication No. 37, see [2]

    Markus Beier, Marc-Olivier Ebert, Ramanarayanan Krishnamurthy, Anatol Luther, Bernhard Jaun, Albert Eschenmoser, Hoan K. Huynh, Oliver Jungmann

    págs. 1259-1308

    

  • Torsional Motion in (tert-Butyl)ammonium Hemispheraplexes: Rotational Barriers and Energy of Binding

    Emily F. Maverick, Ira B. Dicker, Saeed Khan, Carolyn B. Knobler, Kenneth N. Trueblood, James W. Canary

    págs. 1309-1319

    

  • Copper-Binding Motifs: Structural and Theoretical Aspects

    Jenny P. Glusker, Oshrit Navon, Liat Shimoni-Livny, Charles W. Bock, Nadav Navon, Amy Kaufman Katz

    págs. 1320-1338

    

  • Dilemmas in Crystallization. The ¿Unusual' Behavior of trans-1,5-Dichloro-9,10-diethynyl-9,10-dihydroanthracene-9,10-diol and the More ¿Normal' Behavior of Its Pseudopolymorphs with Dipolar Aprotic Solvents

    Judith A. K. Howard, Charlotte K. Broder, Rahul Banerjee, Raju Mondal, Gautam R. Desiraju, Andrei S. Batsanov

    págs. 1339-1351

    

  • Crystalline-State Photoreaction of 1-Azido-2-nitrobenzene ¿ Direct Observation of Heterocycle Formation by X-Ray Crystallography

    Tadashi Sugawara, Yuji Ohashi, Hidehiro Uekusa, Masaki Kawano, Terufumi Takayama

    págs. 1352-1358

    

  • Noncovalent Bond Lengths and Their Cooperative Shortening: Dimers of Vancomycin Group Antibiotics in Crystals and in Solution

    Rosa Zerella, Kellie L. Tuck, Dudley H. Williams, Ben Bardsley, Hideyuki Shiozawa

    págs. 1359-1370

    

  • Chiral Heterospirocyclic 2H-Azirin-3-amines as Synthons for 3-Amino-2,3,4,5-tetrahydrofuran-3-carboxylic Acid and Their Use in Peptide Synthesis

    Anthony Linden, Simon Stamm, Heinz Heimgartner

    págs. 1371-1396

    

  • Enantioselective Synthesis of Key Intermediates in a Novel Approach towards the Iboga-Alkaloid Family

    Stefan Höck, Hans-Jürg Borschberg

    págs. 1397-1409

    

  • The Yellow Polymorphs of Mercuric Iodide (HgI2)

    Henrik Birkedal, Dieter Schwarzenbach, Marc Hostettler

    págs. 1410-1422

    

  • Chiral Amplification of Oligopeptides in the Polymerization of ¿-Amino Acid N-Carboxyanhydrides in Water

    Pier Luigi Luisi, Thomas Hitz

    págs. 1423-1434

    

  • From Hit to Lead: De Novo Design Based on Virtual Screening Hits of Inhibitors of tRNA-Guanine Transglycosylase, a Putative Target of Shigellosis Therapy

    Gerhard Klebe, Klaus Reuter, Ruth Brenk, Jeffrey D. Kittendorf, George A. Garcia, Hans-Dieter Gerber

    págs. 1435-1452

    

  • Reduction-Labile Organo-cob(III)alamins via Cob(II)alamin: Efficient Synthesis and Solution and Crystal Structures of [(Methoxycarbonyl)methyl]cob(III)alamin

    Christoph Kratky, Bernhard Kräutler, Robert Konrat, Michael Puchberger, Ulrike Wagner

    págs. 1453-1466

    

  • Structural Aspects of the ß-Polymorph of (E)-4-Formylcinnamic Acid: Structure Determination Directly from Powder Diffraction Data and Elucidation of Structural Disorder from Solid-State NMR

    Benson M. Kariuki, Simon J. Kitchin, Kenneth D. M. Harris, Siwaporn Meejoo, David Albesa Jové, Eugene Y. Cheung

    págs. 1467-1477

    

  • Structures of Four Crystal Forms of Decaplanin

    Miroslawa Dauter, Judit A. Debreczeni, László Vértesy, Zbigniew Dauter, Gábor Bunkóczi, Christopher Lehmann, George M. Sheldrick

    págs. 1478-1487

    

  • Glycosylidene Carbenes. Part 31 Part 30: [1]

    Sissi E. Mangholz, Andrea Vasella, Bruno Bernet, Karin Briner

    págs. 1488-1521

    

  • Syntheses and CD-Spectroscopic Investigations of Longer-Chain ß-Peptides: Preparation by Solid-Phase Couplings of Single Amino Acids, Dipeptides, and Tripeptides

    Jens Frackenpohl, Per I. Arvidsson, Dieter Seebach

    págs. 1522-1553

    

  • From Crystal Structures and Their Analysis to the in silico Prediction of Toxic Phenomena The contributions of the honoree to this concept are manifold. A thorough analysis of small-molecule crystal sructures has lead to the development of a directional force field for optimizing ligand-receptor complexes. The understanding of phenomena such as induced fit or dynamic binding have been pioneered by Professor Dunitz's analyses of dynamic properties extracted from ¿crystal statics'. His more-recent contributions to the understanding of solvation effects and entropic contributions to ligand bindi

    Angelo Vedani, Max Dobler, Markus A. Lill

    págs. 1554-1568

    

  • Crystals and Life

    Gustaf O. Arrhenius

    págs. 1569-1586

    

  • Structural Effects of Group VI Metal Tricarbonyl Binding to Benzenoid Rings: Interruption of Conjugation or Enhanced Aromaticity?

    Jay S. Siegel, Mitch Nambu, Kim K. Baldridge

    págs. 1587-1597

    

  • Helicity-Encoded Molecular Strands: Efficient Access by the Hydrazone Route and Structural Features

    Jean-Marie Lehn, Adrian-Mihail Stadler, Jean-Louis Schmitt, Nathalie Kyritsakas

    págs. 1598-1624

    

  • Getting More out of Crystal-Structure Analyses

    Silvia C. Capelli, Hans Beat Bürgi

    págs. 1625-1640

    

  • Theory of Stereomutation Dynamics and Parity Violation in Hydrogen Thioperoxide Isotopomers 1,2,3HSO1,2,3H

    Martin Quack, Martin Willeke

    págs. 1641-1652

    

  • The RE¿M¿E Phases

    Mihaela Bojin, Roald Hoffmann

    págs. 1653-1682

    

  • The RE¿M¿E Phases

    Mihaela Bojin, Roald Hoffmann

    págs. 1683-1708

    

  • Structure and Function of the Ribosomal Frameshifting Pseudoknot RNA from Beet Western Yellow Virus

    Alexander Rich, Martin Egli, George Minasov, Sanjay Sarkhel

    págs. 1709-1727

    

  • Any Scalene Triangle Is the Most Chiral Triangle

    Patrick W. Fowler, André Rassat

    págs. 1728-1740

    

  • Gas-Phase Electron-Diffraction Investigation and Quantum-Chemical Calculations of the Structure of 1,5-Dimethylsemibullvalene-2,4,6,8-tetracarboxylic Dianhydride

    Richard Vaughan Williams, Kenneth Hedberg, Svein Samdal, Matthew M. Meyer, Vijay R. Gadgil, Alan D. Richardson

    págs. 1741-1752

    

  • Potent New Heterogeneous Asymmetric Catalysts

    John Meurig Thomas, Robert Raja, Matthew D. Jones, Melinda J. Duer, Brian F. G. Johnson, Jacques Rouzaud

    págs. 1753-1759