Works matching IS 0018019X AND DT 1998 AND VI 81 AND IP 5-8

Results: 59

Aldehyde-Promoted Addition of 2-(Trimethylsilyl)thiazole to α,α′-Dialkoxy Ketones: A new way to branched-chain monosaccharides.

Published in:

Helvetica Chimica Acta, 1998, v. 81, n. 5-8, p. 889, doi. 10.1002/hlca.19980810510

By:

Carcano, Michela;
Vasella, Andrea

Publication type:

Article

Tetraepoxy[22]annulen(2.2.2.0): Ein neuartiges Tetraepoxy-verbrücktes, neutrales, aromatisches [22]Annulen.

Published in:

Helvetica Chimica Acta, 1998, v. 81, n. 5-8, p. 1077, doi. 10.1002/hlca.19980810521

By:

Märkl, Gottfried;
Sauer, Heinrich;
Stiegler, Jürgen;
Kreitmeier, Peter;
Burgemeister, Thomas

Publication type:

Article

A Novel and Efficient Synthesis of 14-Alkoxy-Substituted Indolo- and Benzofuromorphinans in the Series of Selective δ Opioid Receptor Antagonists.

Published in:

Helvetica Chimica Acta, 1998, v. 81, n. 5-8, p. 1215, doi. 10.1002/hlca.19980810532

By:

Schmidhammer, Helmut;
Schwarz, Peter;
Wei, Zhong-Yong

Publication type:

Article

Asymmetric synthesis of pentono- and 6-deoxyhexono-δ-lactams via hetero- Diels- Alder reactions with nitroso dienophile.

Published in:

Helvetica Chimica Acta, 1998, v. 81, n. 5-8, p. 1417, doi. 10.1002/hlca.19980810550

By:

Defoin, Albert;
Sarazin, Hervé;
Sifferlen, Thierry;
Strehler, Christiane;
Streith, Jacques

Publication type:

Article

Selective Derivatization of the Ionophore X-206 at C(22) Maintaining Potassium Binding.

Published in:

Helvetica Chimica Acta, 1998, v. 81, n. 5-8, p. 812, doi. 10.1002/hlca.19980810503

By:

O'Sullivan, Anthony C.;
Struber, Fritz

Publication type:

Article

Enantioselektive Synthese von α-substituierten N-Methyl-sulfonamiden. Vorläufige Mitteilung.

Published in:

Helvetica Chimica Acta, 1998, v. 81, n. 5-8, p. 1329, doi. 10.1002/hlca.19980810543

By:

Enders, Dieter;
Thomas, Christian R.;
Raabe, Gerhard;
Runsink, Jan

Publication type:

Article

Sulfur-Containing Heterocycles Derived by Reaction of ω-Keto Amides with Lawesson's Reagent.

Published in:

Helvetica Chimica Acta, 1998, v. 81, n. 5-8, p. 1207, doi. 10.1002/hlca.19980810531

By:

Nishio, Takehiko

Publication type:

Article

γ-Peptides Forming More Stable Secondary Structures than α-Peptides: Synthesis and helical NMR-solution structure of the γ-hexapeptide analog of H-(Val-Ala-Leu)2-OH.

Published in:

Helvetica Chimica Acta, 1998, v. 81, n. 5-8, p. 983, doi. 10.1002/hlca.19980810514

By:

Hintermann, Tobias;
Gademann, Karl;
Jaun, Bernhard;
Seebach, Dieter

Publication type:

Article

Synthesis of Vitamin-B12 Derivatives with an Electropolymerizable Side Chain.

Published in:

Helvetica Chimica Acta, 1998, v. 81, n. 5-8, p. 1117, doi. 10.1002/hlca.19980810525

By:

Otten, Thomas;
Darbre, Tamis;
Cosnier, Serge;
Abrantes, Luisa;
Correia, Jorge;
Keese, Reinhart

Publication type:

Article

Origin of the Stereoselectivity in (Ethoxycarbonyl)-, Cyano-, and Phenyl-Substituted (Arylsulfinyl)methyl Radicals.

Published in:

Helvetica Chimica Acta, 1998, v. 81, n. 5-8, p. 1048, doi. 10.1002/hlca.19980810518

By:

Renaud, Philippe;
Bourquard, Thierry;
Carrupt, Pierre-Alain;
Gerster, Michéle

Publication type:

Article

Synthesis of 1-(1 H-Imidazol-2-yl)ethane-1,2-diol Derivatives: A novel class of protein kinase C inhibitors.

Published in:

Helvetica Chimica Acta, 1998, v. 81, n. 5-8, p. 1070, doi. 10.1002/hlca.19980810520

By:

Röhrle, Andreas N.;
Schmidhammer, Helmut

Publication type:

Article

New Enzyme Models of Chloroperoxidase: Improved stability and catalytic efficiency of iron porphyrinates containing a thiolato ligand.

Published in:

Helvetica Chimica Acta, 1998, v. 81, n. 5-8, p. 1506, doi. 10.1002/hlca.19980810554

By:

Wagenknecht, Hans-Achim;
Claude, Cécile;
Woggon, Wolf-Dietrich

Publication type:

Article

Cooperative Interactions of the Catalytic Nucleophile and the Catalytic Acid in the Inhibition of β-Glycosidases. Calculations and their validation by comparative kinetic and structural studies of the inhibition of glycogen phosphorylase b.

Published in:

Helvetica Chimica Acta, 1998, v. 81, n. 5-8, p. 853, doi. 10.1002/hlca.19980810507

By:

Heightman, Tom D.;
Vasella, Andrea;
Tsitsanou, Katerina E.;
Zographos, Spyros E.;
Skamnaki, Vicky T.;
Oikonomakos, Nikos G.

Publication type:

Article

Synthesis and Spectroscopic Characterization of 4-Chlorophenyl Isocyanate (= 1-chloro-4-isocyanatobenzene) Adducts with Amino Acids as Potential Dosimeters for the Biomonitoring of Isocyanate Exposure.

Published in:

Helvetica Chimica Acta, 1998, v. 81, n. 5-8, p. 1254, doi. 10.1002/hlca.19980810536

By:

Möller, Marianne;
Henschler, Dietrich;
Sabbioni, Gabriele

Publication type:

Article

A Novel NO2/OH Exchange in α-Nitro Ketones: A mechanistic investigation.

Published in:

Helvetica Chimica Acta, 1998, v. 81, n. 5-8, p. 1373, doi. 10.1002/hlca.19980810547

By:

Yurdakul, Ayçil;
Gurtner, Christian;
Jung, Elena-Silvia;
Lorenzi-Riatsch, Annalaura;
Linden, Anthony;
Guggisberg, Armin;
Bienz, Stefan;
Hesse, Manfred

Publication type:

Article

Lipase-Catalyzed Acetylation of 3-Substituted 2,3-Dihydro-1 H-1,4-benzodiazepin-2-ones: Effect of temperature and conformation on enantioselectivity and configuration.

Published in:

Helvetica Chimica Acta, 1998, v. 81, n. 5-8, p. 1567, doi. 10.1002/hlca.19980810558

By:

Avdagić, Amir;
Lesac, Andreja;
Majer, Zsuzsa;
Hollòsi, Miklòs;
Šunjić, Vitomir

Publication type:

Article

Synthesis of Oligo(3-hydroxybutanoate)(OHB)-Containing Peptides with High Binding Affinity to a Class-I-MHC Protein.

Published in:

Helvetica Chimica Acta, 1998, v. 81, n. 5-8, p. 1181, doi. 10.1002/hlca.19980810529

By:

Seebach, Dieter;
Poenaru, Sorana;
Folkers, Gerd;
Rognan, Didier

Publication type:

Article

Synthesis of Oligonucleotides Containing 2′-Deoxyisoguanosine and 2′-Deoxy-5-methylisocytidine Using Phosphoramidite Chemistry.

Published in:

Helvetica Chimica Acta, 1998, v. 81, n. 5-8, p. 793, doi. 10.1002/hlca.19980810502

By:

Jurczyk, Simona C.;
Kodra, Janos T.;
Rozzell, J. David;
Benner, Steven A.;
Battersby, Thomas R.

Publication type:

Article

3-Hydroxy-2-cyanoalk-2-enamides, and 2-Cyano-2-(tetrahydrofuran-2-ylidene)- and 2-Cyano-2-(tetrahydropyran-2-ylidene)acetamides: Synthesis, structure, and solvent-dependent ( Z)/( E)-isomerism.

Published in:

Helvetica Chimica Acta, 1998, v. 81, n. 5-8, p. 1319, doi. 10.1002/hlca.19980810542

By:

Papageorgiou, Christos;
Akyel, Kayhan;
Borer, Xaver;
Oberer, Lukas;
Rihs, Grety

Publication type:

Article

β2- and β3-Peptides with Proteinaceous Side Chains: Synthesis and solution structures of constitutional isomers, a novel helical secondary structure and the influence of solvation and hydrophobic interactions on folding

Published in:

Helvetica Chimica Acta, 1998, v. 81, n. 5-8, p. 932, doi. 10.1002/hlca.19980810513

By:

Seebach, Dieter;
Abele, Stefan;
Gademann, Karl;
Guichard, Gilles;
Hintermann, Tobias;
Jaun, Bernhard;
Matthews, Jennifer L.;
Schreiber, Jürg V.;
Oberer, Lukas;
Hommel, Ulrich;
Widmer, Hans

Publication type:

Article

Makrocyclische [4 n + 2]- Hückel-Aromaten bis n = 9 und [4 n]-Antiaromaten bis n = 10: Homologe Reihen vom Tetraepoxy[24]-annulen(2.0.2.0) zum Tetraepoxy[40]annulen(12.0.12.0) und vom 'Tetraoxa-[22]porphyrin(2.0.2.0)'-zum 'Tetraepoxa[38]porphyrin(12.0.12.0)'-Dikation

Published in:

Helvetica Chimica Acta, 1998, v. 81, n. 5-8, p. 1480, doi. 10.1002/hlca.19980810553

By:

Märkl, Gottfried;
Knott, Th.;
Kreitmeier, Peter;
Burgemeister, Thomas;
Kastner, F.

Publication type:

Article

Synthesis of Vitamin-B12 Derivatives with Peripheral Tris(oxyethylene) Chains.

Published in:

Helvetica Chimica Acta, 1998, v. 81, n. 5-8, p. 1105, doi. 10.1002/hlca.19980810524

By:

Pfammatter, Michael J.;
Darbre, Tamis;
Keese, Reinhart

Publication type:

Article

Partial Synthesis and Characterization of Capsokarpoxanthins and 3,6-Epoxcapsanthins.

Published in:

Helvetica Chimica Acta, 1998, v. 81, n. 5-8, p. 1242, doi. 10.1002/hlca.19980810535

By:

Deli, József;
Molnár, Péter;
Matus, Zoltán;
Tóth, Gyula;
Steck, Andrea;
Pfander, Hanspeter

Publication type:

Article

Synthesis and Structure Elucidation of a New Potent Sandalwood-Oil Substitute.

Published in:

Helvetica Chimica Acta, 1998, v. 81, n. 5-8, p. 1349, doi. 10.1002/hlca.19980810545

By:

Bajgrowicz, Jerzy A.;
Frank, Iris;
Fráter, Georg;
Hennig, Michael

Publication type:

Article

Nucleotides. Part LVII.. Synthesis of phosphoramidite building blocks of 2′-amino-2′-deoxyribonucleosides: New compounds for oligonucleotide synthesis.

Published in:

Helvetica Chimica Acta, 1998, v. 81, n. 5-8, p. 1528, doi. 10.1002/hlca.19980810556

By:

Greiner, Beate;
Pfleiderer, Wolfgang

Publication type:

Article

Nucleotides. Part LVI. Synthesis and biological activity of modified (2′-5′)triadenylates containing 2′-terminal 2′,3′-dideoxy-3′-fluoroadenosine derivatives.

Published in:

Helvetica Chimica Acta, 1998, v. 81, n. 5-8, p. 1278, doi. 10.1002/hlca.19980810538

By:

Kvasyuk, Evgeny I.;
Kulak, Tamara I.;
Tkachenko, Olga V.;
Sentyureva, Svetlana L.;
Mikhailopulo, Igor A.;
Suhadolnik, Robert J.;
Henderson, Earl E.;
Horvath, Susan E.;
Guan, Ming-Xu;
Pfleiderer, Wolfgang

Publication type:

Article

NMR Verification of Helical Conformations of Phycocyanobilin in Organic Solvents.

Published in:

Helvetica Chimica Acta, 1998, v. 81, n. 5-8, p. 881, doi. 10.1002/hlca.19980810509

By:

Knipp, Bernd;
Müller, Martin;
Metzler-Nolte, Nils;
Balaban, Teodor S.;
Braslavsky, Silvia E.;
Schaffner, Kurt

Publication type:

Article

8-Azaadenosine and Its 2′-Deoxyribonucleoside: Synthesis and oligonucleotide base-pair stability.

Published in:

Helvetica Chimica Acta, 1998, v. 81, n. 5-8, p. 1139, doi. 10.1002/hlca.19980810527

By:

Seela, Frank;
Münster, Ingo;
Lüchner, Uwe;
Rosemeyer, Helmut

Publication type:

Article

An Unusual Acyliminium Cyclization and Other Drawbacks during an Attempted Synthesis of a Chiral Primary α-Phosphinoalkanamine.

Published in:

Helvetica Chimica Acta, 1998, v. 81, n. 5-8, p. 845, doi. 10.1002/hlca.19980810506

By:

Christoffers, Jens

Publication type:

Article

Glycosylidene Carbenes. Part 27. Glucosidation of titanium dioxide with 1-aziglucoses: Preparation and characterization of modified titanium-dioxide surfaces.

Published in:

Helvetica Chimica Acta, 1998, v. 81, n. 5-8, p. 1359, doi. 10.1002/hlca.19980810546

By:

Weber, Martin;
Vasella, Andrea;
Textor, Marcus;
Spencer, Nicholas D.

Publication type:

Article

α-Methylidene-γ-butyrolactones: Synthesis and evaluation of quinolin-2(1 H)-one derivatives.

Published in:

Helvetica Chimica Acta, 1998, v. 81, n. 5-8, p. 1038, doi. 10.1002/hlca.19980810517

By:

Wang, Tai-Chi;
Chen, Yeh-Long;
Tzeng, Cherng-Chyi;
Liou, Shorong-Shii;
Tzeng, Weng-Feng;
Chang, Ya-Ling;
Teng, Che-Ming

Publication type:

Article

Nucleosides. Part LXIII. Acetals as new 2′- O-protecting functions for the synthesis of oligoribonucleotides: Synthesis of uridine building blocks and evaluation of their relative acid stability.

Published in:

Helvetica Chimica Acta, 1998, v. 81, n. 5-8, p. 1545, doi. 10.1002/hlca.19980810557

By:

Matysiak, Stefan;
Fitznar, Hans-Peter;
Schnell, Ralf;
Pfleiderer, Wolfgang

Publication type:

Article

Acridine-Labeled Primers as Tools for the Study of Nonenzymatic RNA Oligomerization.

Published in:

Helvetica Chimica Acta, 1998, v. 81, n. 5-8, p. 1156, doi. 10.1002/hlca.19980810528

By:

Kurz, Markus;
Göbel, Karin;
Hartel, Christian;
Göbel, Michael W.

Publication type:

Article

New Types of Potentially Antimalarial Agents: Epidioxy-substituted norditerpene and norsesterpenes from the marine sponge Diacarnus levii.

Published in:

Helvetica Chimica Acta, 1998, v. 81, n. 5-8, p. 1285, doi. 10.1002/hlca.19980810539

By:

D'Ambrosio, Michele;
Guerriero, Antonio;
Deharo, Eric;
Debitus, Cécile;
Munoz, Victoria;
Pietra, Francesco

Publication type:

Article

Hydrogen Isotope Effect on the Isomerization of Peroxynitrous Acid.

Published in:

Helvetica Chimica Acta, 1998, v. 81, n. 5-8, p. 1201, doi. 10.1002/hlca.19980810530

By:

Padmaja, Sarojini;
Kissner, Reinhard;
Bounds, Patricia L.;
Koppenol, Willem H.

Publication type:

Article

Masthead.

Published in:: Helvetica Chimica Acta, 1998, v. 81, n. 5-8, p. fmi, doi. 10.1002/hlca.19980810501
Publication type:: Article

Synthesis of the Spermidine Alkaloid (−)-(4 R)-Dihydroisomyricoidine.

Published in:

Helvetica Chimica Acta, 1998, v. 81, n. 5-8, p. 1303, doi. 10.1002/hlca.19980810541

By:

Horni, Albert;
Linden, Anthony;
Hesse, Manfred

Publication type:

Article

Distamycin-NA: A DNA analog with an aromatic heterocyclic polyamide backbone. Part 2. Solid-phase synthesis of distamycin-NAs containing the nucleobase uracil: Unexpected solvent participation in the coupling step.

Published in:

Helvetica Chimica Acta, 1998, v. 81, n. 5-8, p. 916, doi. 10.1002/hlca.19980810512

By:

Sauter, Guido;
Leumann, Christian

Publication type:

Article

Synthesis of C-Linked Imino Disaccharides (= Aza- C-disaccharides) with a Pyrrolidine-3,4-diol Moiety Attached at C(3) of Galactose via a Hydroxymethylene Linker and of a 7-(1,2,3-Trihydroxypropyl)-octahydroxyindolizine-1,2,6,8-tetrol.

Published in:

Helvetica Chimica Acta, 1998, v. 81, n. 5-8, p. 1439, doi. 10.1002/hlca.19980810552

By:

Kraehenbuehl, Karin;
Picasso, Sylviane;
Vogel, Pierre

Publication type:

Article

Aminocyclopentitols from N-Alkylpyridinium Salts: A photochemical approach.

Published in:

Helvetica Chimica Acta, 1998, v. 81, n. 5-8, p. 1095, doi. 10.1002/hlca.19980810523

By:

Acar, Ersin A.;
Glarner, Fabrice;
Burger, Ulrich

Publication type:

Article

Isolation of Carotenoids with 3,5,6-Trihydroxy-5,6-dihydro-β-end Groups from Red Paprika ( Capsicum annuum).

Published in:

Helvetica Chimica Acta, 1998, v. 81, n. 5-8, p. 1233, doi. 10.1002/hlca.19980810534

By:

Deli, József;
Molnár, Péter;
Matus, Zoltán;
Tóth, Gyula;
Steck, Andrea;
Pfander, Hanspeter

Publication type:

Article

Kinetic Study of the Reaction of Pyridoxal 5′-Phosphate with Hydrazino Compounds of Pharmacological Activity.

Published in:

Helvetica Chimica Acta, 1998, v. 81, n. 5-8, p. 837, doi. 10.1002/hlca.19980810505

By:

Echevarría-Gorostidi, Gerardo R.;
Basagoitia, Andrea;
Pizarro, Eliana;
Goldsmid, Ruth;
Blanco, José G. Santos;
Blanco, Francisco García

Publication type:

Article

Minor Coumarins from Calophyllum teysmannii var. inophylloide and Synthesis of Cytotoxic Calanone Derivatives.

Published in:

Helvetica Chimica Acta, 1998, v. 81, n. 5-8, p. 1404, doi. 10.1002/hlca.19980810549

By:

Cao, Shu-Geng;
Wu, Xiao-Hua;
Sim, Keng-Yeow;
Tan, Benny H. K.;
Vittal, Jagadese J.;
Pereira, Joan T.;
Goh, Swee-Hock

Publication type:

Article

Antitumor Agents. Part 184. Syntheses and antitubulin activity of compounds derived from reaction of thiocolchicone with amines: Lactams, alcohols, and ester analogs of allothiocolchicinoids.

Published in:

Helvetica Chimica Acta, 1998, v. 81, n. 5-8, p. 1023, doi. 10.1002/hlca.19980810516

By:

Shi, Qian;
Chen, Ke;
Brossi, Arnold;
Verdier-Pinard, Pascal;
Hamel, Ernest;
McPhail, Andrew T.;
Lee, Kuo-Hsiung

Publication type:

Article

Synthesis of Thiophene-Substituted 3 H-Naphtho[2,1- b]pyrans, Precursors of Photomodulated Materials.

Published in:

Helvetica Chimica Acta, 1998, v. 81, n. 5-8, p. 1293, doi. 10.1002/hlca.19980810540

By:

Moustrou, Corinne;
Rebière, Nicole;
Samat, André;
Guglielmetti, Robert;
Yassar, Abd Errahim;
Dubest, Roger;
Aubard, Jean

Publication type:

Article

Heterosupramolecular Chemistry: Synthetic strategies for the covalent and noncovalent assembly and organization of nanocrystals and molecules.

Published in:

Helvetica Chimica Acta, 1998, v. 81, n. 5-8, p. 902, doi. 10.1002/hlca.19980810511

By:

Rao, S. Nagarajo;
Fitzmaurice, Donald

Publication type:

Article

1,2-Carbonyl Transposition of a Protected Rubanone: Stereoselective synthesis of bicyclic and tricyclic lactams derived from quinidine.

Published in:

Helvetica Chimica Acta, 1998, v. 81, n. 5-8, p. 1429, doi. 10.1002/hlca.19980810551

By:

Frackenpohl, Jens;
Langer, Peter;
Hoffmann, H. Martin R.

Publication type:

Article

8-Fluoro-6-(methoxymethoxy)quinoline: Synthesis and regioselective functionalization via reaction with organolithium compounds.

Published in:

Helvetica Chimica Acta, 1998, v. 81, n. 5-8, p. 1088, doi. 10.1002/hlca.19980810522

By:

Stadlwieser, Josef;
Barbier, Pierre;
Taylor, Sven

Publication type:

Article

On the Origin of Asymmetric Induction of the Palladium-Catalyzed Allylic Substitution Reaction with Chiral 4,4-Disubstituted 4,5-Dihydro-2-(phosphinoaryl)oxazole Ligands.

Published in:

Helvetica Chimica Acta, 1998, v. 81, n. 5-8, p. 1223, doi. 10.1002/hlca.19980810533

By:

Schaffner, Silvia;
Müller, Jürgen F. K.;
Neuburger, Markus;
Zehnder, Margareta

Publication type:

Article

A Novel Hydrocarbon, 8,10-Dimethylidenetricyclo[7.1.1.02,7]undeca-2,4,6-triene: Synthesis of benzopinane skeleton via di-π-methane rearrangement of benzonorbornadiene system.

Published in:

Helvetica Chimica Acta, 1998, v. 81, n. 5-8, p. 828, doi. 10.1002/hlca.19980810504

By:

Altundaş, Aliye;
Akbulut, Nihat;
Balci, Metin

Publication type:

Article