Volume 85; Issue 12

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Helvetica Chimica Acta
Volume 85; Issue 12

Helvetica Chimica Acta

Volume 85; Issue 12

1

The α-L-Threofuranosyl-(3′→2′)-oligonucleotide System (‘TNA'): Synthesis and Pairing Properties

Kai-Uwe Schöning, Peter Scholz, Xiaolin Wu, Sreenivasulu Guntha, Guillermo Delgado, Ramanarayanan Krishnamurthy, Albert Eschenmoser

Journal:

Helvetica Chimica Acta

Year:

2002

Language:

english

File:

PDF, 502 KB

english, 2002

2

Evidence that the β-Peptide 14-Helix is Stabilized by β3-Residues with Side-Chain Branching Adjacent to the β-Carbon Atom

Tami L. Raguse, Jonathan R. Lai, Samuel H. Gellman

Journal:

Helvetica Chimica Acta

Year:

2002

Language:

english

File:

PDF, 136 KB

english, 2002

3

Allylsilane-Modified Amino Acids from the Claisen Rearrangement

Mustafa Mohamed, Michael A. Brook

Journal:

Helvetica Chimica Acta

Year:

2002

Language:

english

File:

PDF, 180 KB

english, 2002

4

A Study of the Stereochemical Course of β-Oxygen Elimination with a Rhodium(I) Complex

Masahiro Murakami, Hideyuki Igawa

Journal:

Helvetica Chimica Acta

Year:

2002

Language:

english

File:

PDF, 79 KB

english, 2002

5

Enantioselective Synthesis of β-Amino Acids, Part 13 : Diastereoselective Alkylation of Dianions Derived from Chiral Analogs of β-Aminopropanoic Acid Containing the α-Phenylethyl Group

Víctor Manuel Gutiérrez-García, Gloria Reyes-Rangel, Omar Muñoz-Muñiz, Eusebio Juaristi

Journal:

Helvetica Chimica Acta

Year:

2002

Language:

english

File:

PDF, 129 KB

english, 2002

6

A Novel Concept for Combinatorial Chemistry in Solution: Synthesis of Highly Substituted Pyrrolidines by Multicomponent Domino Reactions

Lutz F. Tietze, Holger Evers, Enno Töpken

Journal:

Helvetica Chimica Acta

Year:

2002

Language:

english

File:

PDF, 77 KB

english, 2002

7

Study of Unusually High Rotational Barriers about SN Bonds in Nonafluorobutane-1-sulfonamides: The Electronic Nature of the Torsional Effect

Ilya M. Lyapkalo, Hans-Ulrich Reissig, Andreas Schäfer, Armin Wagner

Journal:

Helvetica Chimica Acta

Year:

2002

Language:

english

File:

PDF, 144 KB

english, 2002

8

New Results on the Stereoselective Alkylations of Malic Acid Derivatives Supported by Molecular Modeling

Michael Sefkow, Andreas Koch, Erich Kleinpeter

Journal:

Helvetica Chimica Acta

Year:

2002

Language:

english

File:

PDF, 216 KB

english, 2002

9

Automated Solid-Phase Synthesis and Structural Investigation of β-Peptidosulfonamides and β-Peptidosulfonamide/β-Peptide Hybrids: β-Peptidosulfonamide and β-Peptide Foldamers are Two of a Different Kind

Remco de Jong, Dirk T. S. Rijkers, Rob M. J. Liskamp

Journal:

Helvetica Chimica Acta

Year:

2002

Language:

english

File:

PDF, 321 KB

english, 2002

10

Trimetaphosphate-Induced Addition of Aspartic Acid to Oligo(glutamic acid)s

Aubrey Hill, Leslie E. Orgel

Journal:

Helvetica Chimica Acta

Year:

2002

Language:

english

File:

PDF, 106 KB

english, 2002

11

Hourglass-Shaped Dendrimers on Surfaces: A Comparison of Different Scanning-Tunneling-Microscopy Approaches

I. Widmer, U. Hubler, M. Stöhr, L. Merz, H.-J. Güntherodt, B. A. Hermann, P. Samorí, J. P. Rabe, P. B. Rheiner, G. Greiveldinger, P. Murer

Journal:

Helvetica Chimica Acta

Year:

2002

Language:

english

File:

PDF, 158 KB

english, 2002

12

Theoretical Studies on the Diastereoselectivity in the Lewis Acid Catalyzed CarbonylEne Reaction: A Fundamental Role of Electrostatic Interaction

Masahiro Yamanaka, Koichi Mikami

Journal:

Helvetica Chimica Acta

Year:

2002

Language:

english

File:

PDF, 129 KB

english, 2002

13

Highly Diastereo- and Enantioselective Aziridination of α,β-Unsaturated Amides with Diaziridine and Mechanistic Consideration on Its Stereochemistry

Hiroyuki Ishihara, Kiyoto Hori, Hiroyasu Sugihara, Yoshio N. Ito, Tsutomu Katsuki

Journal:

Helvetica Chimica Acta

Year:

2002

Language:

english

File:

PDF, 192 KB

english, 2002

14

Synthesis and Reactivity of π-Electron-Deficient (Arylsulfonyl)acetates

Diego A. Alonso, Carmen Nájera, Montserrat Varea

Journal:

Helvetica Chimica Acta

Year:

2002

Language:

english

File:

PDF, 229 KB

english, 2002

15

Catalyzed Asymmetric DielsAlder Reactions of Benzoquinone. Total Synthesis of (−)-Ibogamine

James D. White, Younggi Choi

Journal:

Helvetica Chimica Acta

Year:

2002

Language:

english

File:

PDF, 254 KB

english, 2002

16

Steric and Electronic Effects on an Antibody-Catalyzed Diels–Alder Reaction

Yael Gozin, Donald Hilvert

Journal:

Helvetica Chimica Acta

Year:

2002

Language:

english

File:

PDF, 100 KB

english, 2002

17

Facile Preparation and Activation of High-Productivity Single-Site Nickel Catalysts for Highly Linear Polyethylene

Marco Pickel, Thomas Casper, Annette Rahm, Christian Dambouwy, Peter Chen

Journal:

Helvetica Chimica Acta

Year:

2002

Language:

english

File:

PDF, 168 KB

english, 2002

18

Cyclic RGD Peptides Containing Azabicycloalkane Reverse-Turn Mimics

Laura Belvisi, Andrea Caporale, Matteo Colombo, Leonardo Manzoni, Donatella Potenza, Carlo Scolastico, Massimo Castorina, Matilde Cati, Giuseppe Giannini, Claudio Pisano

Journal:

Helvetica Chimica Acta

Year:

2002

Language:

english

File:

PDF, 186 KB

english, 2002

19

Regioselective Benzoylation of 6-O-Protected and 4,6-O-Diprotected Hexopyranosides as Promoted by Chiral and Achiral Ditertiary 1,2-Diamines

Guixian Hu, Andrea Vasella

Journal:

Helvetica Chimica Acta

Year:

2002

Language:

english

File:

PDF, 227 KB

english, 2002

20

Construction and Analysis of LifsonRoig Models for the Helical Conformations of α-Peptides

Journal:

Helvetica Chimica Acta

Year:

2002

Language:

english

File:

PDF, 432 KB

english, 2002

21

Synthesis of a Conformationally Flexible β-Hairpin Mimetic

Reinhard W. Hoffmann, Ulrich Schopfer, Gerhard Müller, Trixi Brandl

Journal:

Helvetica Chimica Acta

Year:

2002

Language:

english

File:

PDF, 270 KB

english, 2002

22

Designed Beta-Turn Mimic Based on the Allylic-Strain Concept: Evaluation of Structural and Biological Features by Incorporation into a Cyclic RGD Peptide (Cyclo(-L-arginylglycyl-L-α-aspartyl-))

Martin Sukopp, Luciana Marinelli, Markus Heller, Trixi Brandl, Simon L. Goodman, Reinhard W. Hoffmann, Horst Kessler

Journal:

Helvetica Chimica Acta

Year:

2002

Language:

english

File:

PDF, 144 KB

english, 2002

23

Synthesis and Reactions of New Dithiolopyrroles

Hans-Dietrich Stachel, Eduard Eckl, Elisabeth Immerz-Winkler, Christine Kreiner, Wolfgang Weigand, Christian Robl, Ralf Wünsch, Stefan Dick, Norbert Drescher

Journal:

Helvetica Chimica Acta

Year:

2002

Language:

english

File:

PDF, 163 KB

english, 2002

24

Synthesis of α-Nitro-α-diazocarbonyl Derivatives and Their Applications in the Cyclopropanation of Alkenes and in OH Insertion Reactions

André B. Charette, Ryan P. Wurz, Thierry Ollevier

Journal:

Helvetica Chimica Acta

Year:

2002

Language:

english

File:

PDF, 193 KB

english, 2002

25

Toward an Understanding of the Chemical Etiology for DNA Minor-Groove Recognition by Polyamides

Michael A. Marques, Raymond M. Doss, Adam R. Urbach, Peter B. Dervan

Journal:

Helvetica Chimica Acta

Year:

2002

Language:

english

File:

PDF, 598 KB

english, 2002

26

Lewis Base Catalyzed Aldol Reaction of Trimethylsilyl Enolates with Aldehydes

Teruaki Mukaiyama, Hidehiko Fujisawa, Takashi Nakagawa

Journal:

Helvetica Chimica Acta

Year:

2002

Language:

english

File:

PDF, 141 KB

english, 2002

27

The Development of a Convergent and Efficient Enantioselective Synthesis of the Bengamides via a Common Polyol Intermediate

Robert K. Boeckman, Jr., Tammy J. Clark, Brian C. Shook

Journal:

Helvetica Chimica Acta

Year:

2002

Language:

english

File:

PDF, 297 KB

english, 2002

28

Synthesis of Cyclic Peptides by Photochemical Decarboxylation of N-Phthaloyl Peptides in Aqueous Solution

Axel G. Griesbeck, Thomas Heinrich, Michael Oelgemöller, Arne Molis, Axel Heidtmann

Journal:

Helvetica Chimica Acta

Year:

2002

Language:

english

File:

PDF, 232 KB

english, 2002

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