Volume 73; Issue 1

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Helvetica Chimica Acta
Volume 73; Issue 1

Helvetica Chimica Acta

Volume 73; Issue 1

1

Masthead

Journal:

Helvetica Chimica Acta

Year:

1990

File:

PDF, 35 KB

1990

2

Interaction between Oxygen Lone-Pair Orbitals of Ether and α,β-Unsaturated Ketone Functions in 3,5,6-Trimethylidene-7-oxabicyclo[2.2.1]heptan-2-one and 3,6-Dimethylidene-7-oxabicyclo[2.2.1]heptane-2,5-dione: A PE-Spectroscopic Investigation

Karl Röser, Pierre-Alain Carrupt, Pierre Vogel, Evi Honegger, Edgar Heilbronner

Journal:

Helvetica Chimica Acta

Year:

1990

Language:

english

File:

PDF, 623 KB

english, 1990

3

Synthesis of Peptides Containing α,α-Disubstituted α-Amino Acids by the Azirine/Oxazolone Method: The (12–20)-Nonapeptide of the Ionophore Alamethicin

Peter Wipf, Heinz Heimgartner

Journal:

Helvetica Chimica Acta

Year:

1990

Language:

english

File:

PDF, 869 KB

english, 1990

4

Solution Structure of [Me-L-Leu7]Didemnin B Determined by NMR Spectroscopy and Refined by MD Calculation

Horst Kessler, Siggi Mronga, Martin Will, Ulrich Schmidt

Journal:

Helvetica Chimica Acta

Year:

1990

Language:

english

File:

PDF, 1.19 MB

english, 1990

5

Synthese von Plectranthonen, diterpenoiden Phenanthren-1,4-chinonen

Dimitrios Kaliakoudas, Conrad Hans Eugster, Peter Rüedi

Journal:

Helvetica Chimica Acta

Year:

1990

File:

PDF, 1.04 MB

1990

6

Synthetic Studies Directed toward the Pseurotins. Part I. Synthesis of Related Furan-3(2H)-ones

Matthys Dolder, Xie Shao, Christoph Tamm

Journal:

Helvetica Chimica Acta

Year:

1990

Language:

english

File:

PDF, 335 KB

english, 1990

7

Tilcotil® Studies. Part 2. [4 + 2] Additions with Isothiazol-3(2H)-one 1,1-Dioxide

Kaspar F. Burri

Journal:

Helvetica Chimica Acta

Year:

1990

Language:

english

File:

PDF, 819 KB

english, 1990

8

Tetrazinodiheteroarene: ‘Charge-Transfer’-Komplexbildung mit Akzeptorverbindungen

Bruno Hellrung, Heinz Balli

Journal:

Helvetica Chimica Acta

Year:

1990

Language:

german

File:

PDF, 295 KB

german, 1990

9

Synthesis and Properties of a 2-Diazohistidine Derivative: A New Photoactivatable Aromatic Amino-Acid Analog

Algen Jaganathen, Laurence Ehret-Sabatier, Marie-Jeanne Bouchet, Maurice P. Goeldner, Christian G. Hirth

Journal:

Helvetica Chimica Acta

Year:

1990

Language:

english

File:

PDF, 714 KB

english, 1990

10

Preparation, Characterisation, and Structure of N-Methylated Derivatives of 1,3,5-Triamino-1,3,5-trideoxy-cis-inositol: Polyalcohols with Unusual Acidity

Kaspar Hegetschweiler, Isidor Erni, Walter Schneider, Helmut Schmalle

Journal:

Helvetica Chimica Acta

Year:

1990

Language:

english

File:

PDF, 503 KB

english, 1990

11

Synthesis and Properties of Acyclic and Cryptate Europium(III) Complexes Incorporating the 3,3′-Biisoquinoline 2,2′-Dioxide Unit

Jean-Marie Lehn, Marek Pietraszkiewicz, Jerzy Karpiuk

Journal:

Helvetica Chimica Acta

Year:

1990

Language:

english

File:

PDF, 361 KB

english, 1990

12

Molecular-Graphics Modelling of the Acid Strength in Zeolites: Influence of the Aluminium Distribution in Offretite

Annick Goursot, François Fajula, François Figueras, Claude Daul, Jacques Weber

Journal:

Helvetica Chimica Acta

Year:

1990

Language:

english

File:

PDF, 646 KB

english, 1990

13

Approaches to the Synthesis of Cytochalasans Part9. A versatile concept leading to all structural types of cytochalasans

Jean Ackermann, Michael Matthes, Christoph Tamm

Journal:

Helvetica Chimica Acta

Year:

1990

Language:

english

File:

PDF, 804 KB

english, 1990

14

1,2,3,4,4a,5,8,8a-Octahydro-4β,8aα-dimethylnaphthalen-4aβ-ol ( = Dehydrogeosmin), a Novel Compound Occurring in the Flower Scent of Various Species of cactaceae

Roman Kaiser, Cornelius Nussbaumer

Journal:

Helvetica Chimica Acta

Year:

1990

Language:

english

File:

PDF, 372 KB

english, 1990

15

Metal Complexes with Macrocyclic Ligands. Part XXXI. Protonation studies and complexation properties of tetraazamacrocyclic methylenephosphonates with earth-alkali ions

Rita Delgado, Liselotte C. Siegfried, Thomas A. Kaden

Journal:

Helvetica Chimica Acta

Year:

1990

Language:

english

File:

PDF, 488 KB

english, 1990

16

Metal Complexes with Macrocyclic Ligands. Part XXXII. Reactivity studies of the pendant carboxylic group in a macrocyclic Cu2+ complex towards amide formation and its use as a protein-labelling agent

Martin Studer, Thomas A. Kaden, Helmut R. Mäcke

Journal:

Helvetica Chimica Acta

Year:

1990

Language:

english

File:

PDF, 344 KB

english, 1990

17

Intramolecular Dynamics of Tetranuclear Iridium Carbonyl Cluster Compounds. Part III. Crystallographic and dynamic evidence for the intermediate of the ‘merry-go-round’ process in nonacarbonyl-μ3-(1,3,5-trithiane)-tetrairidium

Gianfranco Suardi, Andres Strawczynski, Renzo Ros, Raymond Roulet, Fabrizia Grepioni, Dario Braga

Journal:

Helvetica Chimica Acta

Year:

1990

Language:

english

File:

PDF, 376 KB

english, 1990

18

Total Syntheses of (−)-Conduritol B ((−)-1L-Cyclohex-5-ene-1,3/2,4-tetrol) and of (+)-Conduritol F((+)-1D-Cyclohex-5-ene-1,2,4/3-tetrol). Determination of the Absolute Configuration of (+)-Leucanthemito

Claude Le Drian, Jean-Paul Vionnet, Pierre Vogel

Journal:

Helvetica Chimica Acta

Year:

1990

Language:

english

File:

PDF, 585 KB

english, 1990

19

A Novel Nitrone Cycloaddition/Rearrangement

Bruce H. Toder, George B. Mullen, Vassil St. Georgiev

Journal:

Helvetica Chimica Acta

Year:

1990

Language:

english

File:

PDF, 223 KB

english, 1990

20

Synthesis and Complexation of 1,2-Bis[(monoaza[15]crown-5)-N-yl]glyoxime. Crystal Structure of (1,2-Bis[(monoaza[15]crown-5)-N-yl]glyoximato)palladium(II)

Vefa Ahsen, Emel Musluoǧlu, Ayşegül Gürek, Ahmet Gül, Özer Bekâroǧlu, Margareta Zehnder

Journal:

Helvetica Chimica Acta

Year:

1990

Language:

english

File:

PDF, 364 KB

english, 1990

21

Synthesis of Derivatives of (1R,10aR)-1-Azido-10-benzylidene-4-(diethylphosphono)-1,2,10,10a-tetrahydro-2-oxo-4H-azeto[1,2-a]pyrido[1,2-d]pyrazin-9-ylium Bromide

Gholam H. Hakimelahi, Ali R. Sardarian

Journal:

Helvetica Chimica Acta

Year:

1990

Language:

english

File:

PDF, 257 KB

english, 1990

22

Synthesis, Reactivity Studies, and X-ray Crystal Structure of (11R)-25-O-Deacetyl-11-deoxo-11-hydroxy-21,23-O-isopropylidenerifamycin S

Cecilia Bartolucci, Luciano Cellai, Silvio Cerrini, Doriano Lamba, Anna Laura Segre, Vittorio Brizzi, Mario Brufani

Journal:

Helvetica Chimica Acta

Year:

1990

Language:

english

File:

PDF, 660 KB

english, 1990

23

A Variable-Pressure 2D 1H-NMR Study of the Mechanism of Trimethyl Phosphate Intermolecular Exchange and cis/trains-Isomerisation of Tetrachlorobis(trimethyl phosphate)zirconium(IV)

Urban Frey, Lothar Helm, André E. Merbach

Journal:

Helvetica Chimica Acta

Year:

1990

Language:

english

File:

PDF, 255 KB

english, 1990

24

Catalysis of Ion Transfer by Tetraphenylborates in Neutral Carrier-Based Ion-Selective Electrodes

Peter Gehrig, Werner E. Morf, Martin Welti, Ernö Pretsch, Wilhelm Simon

Journal:

Helvetica Chimica Acta

Year:

1990

Language:

english

File:

PDF, 501 KB

english, 1990

25

Blockcopolymers in microemulsions differential heats of solution and shift of the percolation temperature in W/O microemulsions

Hans-Friedrich Eicke, Rolf Hilfiker, Gu Xu

Journal:

Helvetica Chimica Acta

Year:

1990

Language:

english

File:

PDF, 370 KB

english, 1990

26

Synthese cyclischer Depsipeptide durch direkte Amid-Cyclisierung: 12gliedrige Depsipeptide mit alternierender Sequenz von α-Hydroxy- und α-Aminosäuren

Daniel Obrecht, Heinz Heimgartner

Journal:

Helvetica Chimica Acta

Year:

1990

File:

PDF, 533 KB

1990

27

Mitteilungen

Journal:

Helvetica Chimica Acta

Year:

1990

Language:

english

File:

PDF, 119 KB

english, 1990

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