Volume 76; Issue 5

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Helvetica Chimica Acta
Volume 76; Issue 5

Helvetica Chimica Acta

Volume 76; Issue 5

1

Masthead

Journal:

Helvetica Chimica Acta

Year:

1993

File:

PDF, 36 KB

1993

2

7-Deazaadenosine: Oligoribonucleotide building block synthesis and autocatalytic hydrolysis of base-modified hammerhead ribozymes

Frank Seela, Karin Mersmann, Jane A. Grasby, Michael J. Gait

Journal:

Helvetica Chimica Acta

Year:

1993

Language:

english

File:

PDF, 752 KB

english, 1993

3

Preparation and ESR-Spectroscopical Investigation of Remarkably Persistent Oxoisobenzofuranyl Radicals

Gary Kruppa, Paul Hug, André Liégard, Guenther Rist, Petr Nesvadba

Journal:

Helvetica Chimica Acta

Year:

1993

Language:

english

File:

PDF, 869 KB

english, 1993

4

Introduction of a New Class of Ligands for the Metal-Catalyzed Enantioselective Synthesis

Journal:

Helvetica Chimica Acta

Year:

1993

Language:

english

File:

PDF, 831 KB

english, 1993

5

Synthesis of Aristotelia-Type Alkaloids. Part XII. Total synthesis of (−)-tasmanine. Stereoelectronic factors that control the rearrangement of 3H-indol-3-ol derivatives to oxindoles ( = 1,3-dihydro-2H-indol-2-ones) or to pseudoindoxyls ( =1,2-dihydro-3H-indol-3-ones)

Rolf Güller, Hans-Jürg Borschberg

Journal:

Helvetica Chimica Acta

Year:

1993

Language:

english

File:

PDF, 1004 KB

english, 1993

6

Conformational Analysis of Open-Chain 1,2:3,4-Diepoxides: Comparison of crystal structures, NMR data, and molecular-orbital calculations

Daniel Bur, Martin Nikles, Urs Séquin, Markus Neuburger, Margareta Zehnder

Journal:

Helvetica Chimica Acta

Year:

1993

Language:

english

File:

PDF, 780 KB

english, 1993

7

Chiral Acylsilanes in Organic Synthesis. Part 2. The role of the solvent, the organometallic reagent, and the nature of the substrate for the diastereoselectivity of 1,2-additions to racemic alkoxymethyl-substituted acylsilanes

Alexander Chapeaurouge, Stefan Bienz

Journal:

Helvetica Chimica Acta

Year:

1993

Language:

english

File:

PDF, 1.21 MB

english, 1993

8

Isolierung und Struktur von langkettigen Alkylphenolen und -pyrocatecholen aus Plectranthus albidus (Labiatae)

Christoph Bürgi, Peter Rüedi

Journal:

Helvetica Chimica Acta

Year:

1993

File:

PDF, 869 KB

1993

9

Synthese von Alkylphenolen und -pyrocatecholen aus Plectranthus albidus (Labiatae)

Christoph Bürgi, Gui Liu, Peter Rüedi

Journal:

Helvetica Chimica Acta

Year:

1993

File:

PDF, 1.15 MB

1993

10

Hetero-Diels-Alder cycloadditions of α,β-unsaturated acyl cyanides. Part 2. Reactions with N,N-dimethyluracils, a new route to 5-substituted uracil derivatives

Jin-Cong Zhuo, Hugo Wyler

Journal:

Helvetica Chimica Acta

Year:

1993

Language:

english

File:

PDF, 991 KB

english, 1993

11

The Effect of Electron-Donating and Electron-Withdrawing Substituents on 1H-and 13C-NMR chemical shifts of novel 7′-aryl-substituted 7′-apo-β-carotenes

Elli S. Hand, Kenneth A. Belmore, Lowell D. Kispert

Journal:

Helvetica Chimica Acta

Year:

1993

Language:

english

File:

PDF, 552 KB

english, 1993

12

Synthesis and NMR-Spectroscopic Structure Determination of Novel 7,7′-Diphenyl-7,7′-diapocarotenoids

Elli S. Hand, Kenneth A. Belmore, Lowell D. Kispert

Journal:

Helvetica Chimica Acta

Year:

1993

Language:

english

File:

PDF, 510 KB

english, 1993

13

Synthesis and Absolute Configuration of the C12-Terpenoid Dehydrogeosmin from the Flower Scents of Rebutia marsoneri and Dolichothele sphaerica (Cactaceae); a new approach to bis-angularly substituted trans-decalins

Udo Huber, Wilhelm Boland, Wilfried A. König, Bärbel Gehrcke

Journal:

Helvetica Chimica Acta

Year:

1993

Language:

english

File:

PDF, 433 KB

english, 1993

14

Synthesis and Monoamine Oxidase Inhibitory Activity of 3-Substituted 5H-Indeno[1,2-c]pyridazines

Silvia Kneubühler, Bernard Testa, Vincenzo Carta, Cosimo Altomare, Angelo Carotti

Journal:

Helvetica Chimica Acta

Year:

1993

Language:

english

File:

PDF, 417 KB

english, 1993

15

Complex Formation of PdII Ion with the Tripodal Ligand Tris[2-(dimethylamino)ethyl]amine

Giorgio Anderegg, Zdenek Melichar

Journal:

Helvetica Chimica Acta

Year:

1993

Language:

english

File:

PDF, 356 KB

english, 1993

16

Pteridines. Part C. Structure and nonenzymatic synthesis of aurodrosopterin

Jeongbin Yim, Sujeong Kim, Gunter Walcher, Wolfgang Pfleiderer

Journal:

Helvetica Chimica Acta

Year:

1993

Language:

english

File:

PDF, 578 KB

english, 1993

17

Umsetzung von 3-Amino-2H-azirinen mit Salicylohydrazid

Florian Magirius, Anthony Linden, Heinz Heimgartner

Journal:

Helvetica Chimica Acta

Year:

1993

File:

PDF, 1.29 MB

1993

18

Cyclische Oligomere von (R)-3-Hydroxybuttersäure: Herstellung und strukturelle Aspekte

Diemar A. Plattner, Andreas Brunner, Max Dobler, Hans-Martin Müller, Walter Petter, Peter Zbinden, Dieter Seebach

Journal:

Helvetica Chimica Acta

Year:

1993

Language:

english

File:

PDF, 1.72 MB

english, 1993

19

Catalytic Cyclophanes. Part VIII. Cytochrome P-450 activity of a porphyrin-bridged cyclophane

David R. Benson, Robert Valentekovich, Suk-Wah Tam, François Diederich

Journal:

Helvetica Chimica Acta

Year:

1993

Language:

english

File:

PDF, 1.66 MB

english, 1993

20

The Donor-Acceptor-Acceptor Purine Analog: Transformation of 5-aza-7-deaza-1H-isoguanine (=4-aminoimidazo-[1,2-a]-1,3,5-triazin-2(1H)-one) to 2′-deoxy-5-aza-7-deaza-isoguanosine using purine nucleoside phosphorylase

Johannes J. Voegel, Michael M. Altorfer, Steven A. Benner

Journal:

Helvetica Chimica Acta

Year:

1993

Language:

english

File:

PDF, 656 KB

english, 1993

21

Preparation of optically active flowery and woody-like odorant ketones via Corey-Chaykovsky oxiranylation: Irones and analogues

Christian Chapuis, Robert Brauchli

Journal:

Helvetica Chimica Acta

Year:

1993

Language:

english

File:

PDF, 1.20 MB

english, 1993

22

Synthese und Pyrolyse einer Triafulven-Vorstufe

Michel Mühlebach, Markus Neuenschwander, Peter Engel

Journal:

Helvetica Chimica Acta

Year:

1993

File:

PDF, 1.36 MB

1993

23

Oxidative Coupling of 6,6-Dimethylpentafulvenyl Anion

Shaochun You, Markus Neuenschwander, Hanspeter Huber

Journal:

Helvetica Chimica Acta

Year:

1993

Language:

english

File:

PDF, 964 KB

english, 1993

24

Magnetic-Field-Dependent Electronic Relaxation of Gd3+ in Aqueous Solutions of the Complexes [Gd(H2O)8]3+, [Gd(propane-1,3-diamine-N,N,N′,N′-tetraacetate)(H2O)2]−, and [Gd(N,N′-bis[(N-methylcarbamoyl)methyl]-3-azapentane-1,5-diamine-3,N,N′-triacetate)(H2O)] of interest in magnetic-resonance imaging

D. Hugh Powell, André E. Merbach, Gabriel González, Ernö Brücher, Károly Micskei, M. Francesca Ottaviani, Klaus Köhler, Alex Von Zelewsky, Oleg Ya. Grinberg, Yakob S. Lebedev

Journal:

Helvetica Chimica Acta

Year:

1993

Language:

english

File:

PDF, 823 KB

english, 1993

25

Thiocarbonyl-imide aus der Umsetzung von 2,2,4,4-Tetramethyl-3-thioxocyclobutanon mit Aryl-aziden

Grzegorz Mlostoń, Jaroslaw Romański, Anthony Linden, Heinz Heimgartner

Journal:

Helvetica Chimica Acta

Year:

1993

File:

PDF, 468 KB

1993

26

The Crystal Structure of C70 · 6(S8) at 100 K

Hans Beat Bürgi, Paloth Venugopalan, Dieter Schwarzenbach, François Diederich, Carlo Thilgen

Journal:

Helvetica Chimica Acta

Year:

1993

Language:

english

File:

PDF, 276 KB

english, 1993

27

Mitteilungen

Journal:

Helvetica Chimica Acta

Year:

1993

Language:

english

File:

PDF, 64 KB

english, 1993

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