Works matching IS 0018019X AND DT 2002 AND VI 85 AND IP 12

Results: 28

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

Published in:

Helvetica Chimica Acta, 2002, v. 85, n. 12, p. 4216, doi. 10.1002/hlca.200290007

By:

Sefkow, Michael;
Koch, Andreas;
Kleinpeter, Erich

Publication type:

Article

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-)).

Published in:

Helvetica Chimica Acta, 2002, v. 85, n. 12, p. 4442, doi. 10.1002/hlca.200290021

By:

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

Publication type:

Article

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

Published in:

Helvetica Chimica Acta, 2002, v. 85, n. 12, p. 4182, doi. 10.1002/hlca.200290003

By:

Murakami, Masahiro;
Igawa, Hideyuki

Publication type:

Article

Synthesis and Reactions of New Dithiolopyrroles.

Published in:

Helvetica Chimica Acta, 2002, v. 85, n. 12, p. 4453, doi. 10.1002/hlca.200290022

By:

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

Publication type:

Article

Synthesis of a Conformationally Flexible β-Hairpin Mimetic.

Published in:

Helvetica Chimica Acta, 2002, v. 85, n. 12, p. 4424, doi. 10.1002/hlca.200290020

By:

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

Publication type:

Article

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

Published in:

Helvetica Chimica Acta, 2002, v. 85, n. 12, p. 4200, doi. 10.1002/hlca.200290005

By:

Tietze, Lutz F.;
Evers, Holger;
Töpken, Enno

Publication type:

Article

Synthesis of α-Nitro- α-diazocarbonyl Derivatives and Their Applications in the Cyclopropanation of Alkenes and in OH Insertion Reactions.

Published in:

Helvetica Chimica Acta, 2002, v. 85, n. 12, p. 4468, doi. 10.1002/hlca.200290023

By:

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

Publication type:

Article

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

Published in:

Helvetica Chimica Acta, 2002, v. 85, n. 12, p. 4244, doi. 10.1002/hlca.200290009

By:

Hill, Aubrey;
Orgel, Leslie E.

Publication type:

Article

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

Published in:

Helvetica Chimica Acta, 2002, v. 85, n. 12, p. 4255, doi. 10.1002/hlca.200290010

By:

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

Publication type:

Article

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

Published in:

Helvetica Chimica Acta, 2002, v. 85, n. 12, p. 4369, doi. 10.1002/hlca.200290018

By:

Hu, Guixian;
Vasella, Andrea

Publication type:

Article

Enantioselective Synthesis of β-Amino Acids, Part 13.

Published in:

Helvetica Chimica Acta, 2002, v. 85, n. 12, p. 4189, doi. 10.1002/hlca.200290004

By:

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

Publication type:

Article

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

Published in:

Helvetica Chimica Acta, 2002, v. 85, n. 12, p. 4485, doi. 10.1002/hlca.200290024

By:

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

Publication type:

Article

Cyclic RGD Peptides Containing Azabicycloalkane Reverse-Turn Mimics.

Published in:

Helvetica Chimica Acta, 2002, v. 85, n. 12, p. 4353, doi. 10.1002/hlca.200290017

By:

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

Publication type:

Article

Catalyzed Asymmetric DielsAlder Reactions of Benzoquinone. Total Synthesis of (−)-Ibogamine.

Published in:

Helvetica Chimica Acta, 2002, v. 85, n. 12, p. 4306, doi. 10.1002/hlca.200290014

By:

White, James D.;
Choi, Younggi

Publication type:

Article

Lewis Base Catalyzed Aldol Reaction of Trimethylsilyl Enolates with Aldehydes.

Published in:

Helvetica Chimica Acta, 2002, v. 85, n. 12, p. 4518, doi. 10.1002/hlca.200290025

By:

Mukaiyama, Teruaki;
Fujisawa, Hidehiko;
Nakagawa, Takashi

Publication type:

Article

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

Published in:

Helvetica Chimica Acta, 2002, v. 85, n. 12, p. 4272, doi. 10.1002/hlca.200290012

By:

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

Publication type:

Article

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

Published in:

Helvetica Chimica Acta, 2002, v. 85, n. 12, p. 4111, doi. 10.1002/hlca.200290000

By:

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

Publication type:

Article

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

Published in:

Helvetica Chimica Acta, 2002, v. 85, n. 12, p. 4287, doi. 10.1002/hlca.200290013

By:

Alonso, Diego A.;
Nájera, Carmen;
Varea, Montserrat

Publication type:

Article

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

Published in:

Helvetica Chimica Acta, 2002, v. 85, n. 12, p. 4561, doi. 10.1002/hlca.200290027

By:

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

Publication type:

Article

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

Published in:

Helvetica Chimica Acta, 2002, v. 85, n. 12, p. 4532, doi. 10.1002/hlca.200290026

By:

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

Publication type:

Article

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

Published in:

Helvetica Chimica Acta, 2002, v. 85, n. 12, p. 4328, doi. 10.1002/hlca.200290015

By:

Gozin, Yael;
Hilvert, Donald

Publication type:

Article

Construction and Analysis of Lifson Roig Models for the Helical Conformations of α-Peptides.

Published in:

Helvetica Chimica Acta, 2002, v. 85, n. 12, p. 4392, doi. 10.1002/hlca.200290019

By:

Kemp, Daniel S.

Publication type:

Article

Theoretical Studies on the Diastereoselectivity in the Lewis Acid Catalyzed CarbonylEne Reaction: A Fundamental Role of Electrostatic Interaction.

Published in:

Helvetica Chimica Acta, 2002, v. 85, n. 12, p. 4264, doi. 10.1002/hlca.200290011

By:

Yamanaka, Masahiro;
Mikami, Koichi

Publication type:

Article

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

Published in:

Helvetica Chimica Acta, 2002, v. 85, n. 12, p. 4206, doi. 10.1002/hlca.200290006

By:

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

Publication type:

Article

Evidence that the β-Peptide 14-Helix is Stabilized by β<sup>3</sup>-Residues with Side-Chain Branching Adjacent to the β-Carbon Atom.

Published in:

Helvetica Chimica Acta, 2002, v. 85, n. 12, p. 4154, doi. 10.1002/hlca.200290001

By:

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

Publication type:

Article

Allylsilane-Modified Amino Acids from the Claisen Rearrangement.

Published in:

Helvetica Chimica Acta, 2002, v. 85, n. 12, p. 4165, doi. 10.1002/hlca.200290002

By:

Mohamed, Mustafa;
Brook, Michael A.

Publication type:

Article

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.

Published in:

Helvetica Chimica Acta, 2002, v. 85, n. 12, p. 4230, doi. 10.1002/hlca.200290008

By:

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

Publication type:

Article

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

Published in:

Helvetica Chimica Acta, 2002, v. 85, n. 12, p. 4337, doi. 10.1002/hlca.200290016

By:

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

Publication type:

Article