Works matching IS 0018019X AND DT 1992 AND VI 75 AND IP 6

Results: 28

Carbocyclic analogs of nucleosides. Part 2.. Synthesis of 2′,3′-dideoxy-5′-homonucleoside analogs.

Published in:

Helvetica Chimica Acta, 1992, v. 75, n. 6, p. 1944, doi. 10.1002/hlca.19920750620

By:

Jenny, Thomas F.;
Horlacher, Jennifer;
Previsani, Nicoletta;
Benner, Steven A.

Publication type:

Article

Color Chemistry as Reflected in Helvetica Chimica Acta.

Published in:

Helvetica Chimica Acta, 1992, v. 75, n. 6, p. 1727, doi. 10.1002/hlca.19920750602

By:

Zollinger, Heinrich

Publication type:

Article

Carbonyliron Complexation and Carbonyl Insertion of Allenic Ketones.

Published in:

Helvetica Chimica Acta, 1992, v. 75, n. 6, p. 1872, doi. 10.1002/hlca.19920750613

By:

Trifonov, Latchezar S.;
Orahovats, Alexander S.;
Linden, Anthony;
Heimgartner, Heinz

Publication type:

Article

Organometallic Derivatives of Cycloproparenes.

Published in:

Helvetica Chimica Acta, 1992, v. 75, n. 6, p. 1995, doi. 10.1002/hlca.19920750624

By:

Müller, Paul;
Bernardinelli, Gérald;
Jacquier, Yvan

Publication type:

Article

Di( tert-butyl)diazomethan: Thermische Zersetzung und Einelektronen-Redox-Reaktionen.

Published in:

Helvetica Chimica Acta, 1992, v. 75, n. 6, p. 1798, doi. 10.1002/hlca.19920750606

By:

Bock, Hans;
Berkner, Bodo;
Hierholzer, Bernhard;
Jaculi, Dieter

Publication type:

Article

Synthetic Analogues of Naturally Occurring Spider Toxins.

Published in:

Helvetica Chimica Acta, 1992, v. 75, n. 6, p. 1909, doi. 10.1002/hlca.19920750617

By:

Kovács, Lajos;
Hesse, Manfred

Publication type:

Article

Mitteilungen.

Published in:: Helvetica Chimica Acta, 1992, v. 75, n. 6, p. 2041, doi. 10.1002/hlca.19920750628
Publication type:: Article

Masthead.

Published in:: Helvetica Chimica Acta, 1992, v. 75, n. 6, p. fmi, doi. 10.1002/hlca.19920750601
Publication type:: Article

Reaction of Diphenyl Phosphorochloridate with Amide Enolates: A new and convenient synthesis of 2-monosubstituted 3-( n-methyl- n -phenylamino)-2 H-azirines.

Published in:

Helvetica Chimica Acta, 1992, v. 75, n. 6, p. 1866, doi. 10.1002/hlca.19920750612

By:

Villalgordo, José M.;
Heimgartner, Heinz

Publication type:

Article

Glycosylidene Carbenes. Part 9. Regioselective glycosidation of diols and triols: Intra- and intermolecular hydrogen bonds.

Published in:

Helvetica Chimica Acta, 1992, v. 75, n. 6, p. 1979, doi. 10.1002/hlca.19920750623

By:

Uhlmann, Peter;
Vasella, Andrea

Publication type:

Article

Highly Selective Benzylic CH Bond Activation of Toluene 1 by 'Bare' FeO+ in the Gas Phase. Short communication.

Published in:

Helvetica Chimica Acta, 1992, v. 75, n. 6, p. 1792, doi. 10.1002/hlca.19920750605

By:

Schröder, Detlef;
Florencio, Helena;
Zummack, Waltraud;
Schwarz, Helmut

Publication type:

Article

Synthesis and Structure of [4.5.5.5]Fenestranes ( = tetracyclo[5.4.1.04, 12.09, 12]dodecanes).

Published in:

Helvetica Chimica Acta, 1992, v. 75, n. 6, p. 1897, doi. 10.1002/hlca.19920750616

By:

Hirschi, Daniel;
Luef, Wolfgang;
Gerber, Peter;
Keese, Reinhart

Publication type:

Article

Conformational Studies of Marine Polyhalogenated α-Chamigrenes Using Temperature-dependent NMR spectra inverted-chair and twist-boat cyclohexane moieties in the presence of an axial halogen atom at C(8).

Published in:

Helvetica Chimica Acta, 1992, v. 75, n. 6, p. 2026, doi. 10.1002/hlca.19920750627

By:

Guella, Graziano;
Chiasera, Giuseppe;
Pietra, Francesco

Publication type:

Article

Synthese von (±)-Muscopyridin über eine C-ZIP-Ringerweiterungsreaktion.

Published in:

Helvetica Chimica Acta, 1992, v. 75, n. 6, p. 1834, doi. 10.1002/hlca.19920750609

By:

Hadj-Abo, Ferrid;
Hesse, Manfred

Publication type:

Article

Synthesis, Isolation, and NMR-Spectroscopic Characterization of Fourteen ( Z)-Isomers of Lycopene and of Some Acetylenic Didehydro- and Tetradehydrolycopenes.

Published in:

Helvetica Chimica Acta, 1992, v. 75, n. 6, p. 1848, doi. 10.1002/hlca.19920750611

By:

Hengartner, Urs;
Bernhard, Kurt;
Meyer, Karl;
Englert, Gerhard;
Glinz, Ernst

Publication type:

Article

Asymmetric Synthesis of α-Amino Acids and α- N-Hydroxyamino Acids from N-Acylbornane-10,2-sultams: 1-chloro-1-nitrosocyclohexane as a practical [NH.

Published in:

Helvetica Chimica Acta, 1992, v. 75, n. 6, p. 1965, doi. 10.1002/hlca.19920750622

By:

Oppolzer, Wolfgang;
Tamura, Osamu;
Deerberg, JöRg

Publication type:

Article

Setting the Bridgehead Oxidation Level in trans-Tricyclo[9.3.1.03,8]pentadecanes as a Prelude to the Dual Synthesis of Taxol and Taxusin.

Published in:

Helvetica Chimica Acta, 1992, v. 75, n. 6, p. 1772, doi. 10.1002/hlca.19920750604

By:

Paquette, Leo A.;
Combrink, Keith D.;
Elmore, Steven W.;
Zhao, Mangzhu

Publication type:

Article

8-Azaadenine 2′,3′-Dideoxyribonucleosides: Synthesis via 1,2,3- triazolo[4,5- d]pyrimidinyl anions.

Published in:

Helvetica Chimica Acta, 1992, v. 75, n. 6, p. 1885, doi. 10.1002/hlca.19920750615

By:

Seela, Frank;
Mersmann, Karin

Publication type:

Article

Conformational Studies of Marine Polyhalogenated α-Chamigrenes Using Temperature-Dependent NMR Spectra. Cyclohexene-ring flipping and rigid-chair cyclohexane ring in the presence of equatorial halogen atoms at C(8) and C(9).

Published in:

Helvetica Chimica Acta, 1992, v. 75, n. 6, p. 2012, doi. 10.1002/hlca.19920750626

By:

Guella, Graziano;
Chiasera, Giuseppe;
Pietra, Francesco

Publication type:

Article

Reaktion von 2-Diazopropan mit 1,3-Thiazol-5(4 H)-thionen.

Published in:

Helvetica Chimica Acta, 1992, v. 75, n. 6, p. 1825, doi. 10.1002/hlca.19920750608

By:

Mlostoń, Grzegorz;
Heimgartner, Heinz

Publication type:

Article

Sydnones as Masked Hydrazines for Heterocycle Formation: Reactions of 3-(2-substituted phenyl)sydnones with HCl.

Published in:

Helvetica Chimica Acta, 1992, v. 75, n. 6, p. 1931, doi. 10.1002/hlca.19920750619

By:

Gelvin, Christopher R.;
Turnbull, Kenneth

Publication type:

Article

Syntheses of Novel Isopenam and Isocephem Antibiotics. Preparation of a retinamido derivative of a highly strained β-lactam as potent anticancer agent.

Published in:

Helvetica Chimica Acta, 1992, v. 75, n. 6, p. 1840, doi. 10.1002/hlca.19920750610

By:

Hakimelahi, Gholam H.;
Shiao, Min-Jen;
Hwu, Jih Ru;
Davari, Hady

Publication type:

Article

Electrospray-Ionization Mass Spectrometry: Detection of a radical cation present in solution: New results on the chemistry of (tetrahydropteridinone)-metal complexes.

Published in:

Helvetica Chimica Acta, 1992, v. 75, n. 6, p. 1955, doi. 10.1002/hlca.19920750621

By:

Schäfer, Andrea;
Fischer, Berthold;
Paul, Henning;
Bosshard, René;
Hesse, Manfred;
Viscontinif, Max

Publication type:

Article

An Enantioselective Approach to the Taxanes: Direct access to functionalized cis-tricyclo[9.3.1.03,8]pentadecanes via α-hydroxy ketone and Wagner- Meerwein rearrangements.

Published in:

Helvetica Chimica Acta, 1992, v. 75, n. 6, p. 1755, doi. 10.1002/hlca.19920750603

By:

Paquette, Leo A.;
Elmore, Steven W.;
Combrink, Keith D.;
Hickey, Eugene R.;
Rogers, Robin D.

Publication type:

Article

Magnetic Circular Dichroism and Electronic Spectra of Tropothione.

Published in:

Helvetica Chimica Acta, 1992, v. 75, n. 6, p. 1880, doi. 10.1002/hlca.19920750614

By:

Higashi, Miwako;
Yamaguchi, Hiroyuki;
Machiguchi, Takahisa;
Hasegawa, Toshio;
Baumann, Harold

Publication type:

Article

High-Yield Formation of Arbutin from Hydroquinone by Cell-Suspension Cultures of Rauwolfia serpentina.

Published in:

Helvetica Chimica Acta, 1992, v. 75, n. 6, p. 2009, doi. 10.1002/hlca.19920750625

By:

Lutterbach, Ralf;
Stöckigt, Joachim

Publication type:

Article

Strukturänderungen bei der Reduktion von 9-(Diphenylmethyliden)fluoren mit Natrium-Metall zu Schichten (R2O)Na⊕-verknüpfter Kohlenwasserstoff-Dianionen.

Published in:

Helvetica Chimica Acta, 1992, v. 75, n. 6, p. 1816, doi. 10.1002/hlca.19920750607

By:

Bock, Hans;
Ruppert, Klaus;
Herdtweck, Eberhardt;
Herrmann, Wolfgang A.

Publication type:

Article

Light-Induced Cycloaddition of Furan and addition of methanol to a 4-thiacyclohex-2-enone ( = 2,3-dihydro-4 H-thiin-4-one) and a 4-thiacyclopent-2-enone ( = thiophen-3(2 H)-one).

Published in:

Helvetica Chimica Acta, 1992, v. 75, n. 6, p. 1925, doi. 10.1002/hlca.19920750618

By:

Kowalewski, Ronald;
Margaretha, Paul

Publication type:

Article

Works matching IS 0018019X AND DT 1992 AND VI 75 AND IP 6

Carbocyclic analogs of nucleosides. Part 2.. Synthesis of 2′,3′-dideoxy-5′-homonucleoside analogs.

Color Chemistry as Reflected in Helvetica Chimica Acta.

Carbonyliron Complexation and Carbonyl Insertion of Allenic Ketones.

Organometallic Derivatives of Cycloproparenes.

Di( tert-butyl)diazomethan: Thermische Zersetzung und Einelektronen-Redox-Reaktionen.

Synthetic Analogues of Naturally Occurring Spider Toxins.

Mitteilungen.

Masthead.

Reaction of Diphenyl Phosphorochloridate with Amide Enolates: A new and convenient synthesis of 2-monosubstituted 3-( n-methyl- n -phenylamino)-2 H-azirines.

Glycosylidene Carbenes. Part 9. Regioselective glycosidation of diols and triols: Intra- and intermolecular hydrogen bonds.

Highly Selective Benzylic CH Bond Activation of Toluene 1 by 'Bare' FeO<sup>+</sup> in the Gas Phase. Short communication.

Synthesis and Structure of [4.5.5.5]Fenestranes ( = tetracyclo[5.4.1.0<sup>4, 12</sup>.0<sup>9, 12</sup>]dodecanes).

Conformational Studies of Marine Polyhalogenated α-Chamigrenes Using Temperature-dependent NMR spectra inverted-chair and twist-boat cyclohexane moieties in the presence of an axial halogen atom at C(8).

Synthese von (±)-Muscopyridin über eine C-ZIP-Ringerweiterungsreaktion.

Synthesis, Isolation, and NMR-Spectroscopic Characterization of Fourteen ( Z)-Isomers of Lycopene and of Some Acetylenic Didehydro- and Tetradehydrolycopenes.

Asymmetric Synthesis of α-Amino Acids and α- N-Hydroxyamino Acids from N-Acylbornane-10,2-sultams: 1-chloro-1-nitrosocyclohexane as a practical [NH.

Setting the Bridgehead Oxidation Level in trans-Tricyclo[9.3.1.0<sup>3,8</sup>]pentadecanes as a Prelude to the Dual Synthesis of Taxol and Taxusin.

8-Azaadenine 2′,3′-Dideoxyribonucleosides: Synthesis via 1,2,3- triazolo[4,5- d]pyrimidinyl anions.

Conformational Studies of Marine Polyhalogenated α-Chamigrenes Using Temperature-Dependent NMR Spectra. Cyclohexene-ring flipping and rigid-chair cyclohexane ring in the presence of equatorial halogen atoms at C(8) and C(9).

Reaktion von 2-Diazopropan mit 1,3-Thiazol-5(4 H)-thionen.

Sydnones as Masked Hydrazines for Heterocycle Formation: Reactions of 3-(2-substituted phenyl)sydnones with HCl.

Syntheses of Novel Isopenam and Isocephem Antibiotics. Preparation of a retinamido derivative of a highly strained β-lactam as potent anticancer agent.

Electrospray-Ionization Mass Spectrometry: Detection of a radical cation present in solution: New results on the chemistry of (tetrahydropteridinone)-metal complexes.

An Enantioselective Approach to the Taxanes: Direct access to functionalized cis-tricyclo[9.3.1.0<sup>3,8</sup>]pentadecanes via α-hydroxy ketone and Wagner- Meerwein rearrangements.

Magnetic Circular Dichroism and Electronic Spectra of Tropothione.

High-Yield Formation of Arbutin from Hydroquinone by Cell-Suspension Cultures of Rauwolfia serpentina.

Strukturänderungen bei der Reduktion von 9-(Diphenylmethyliden)fluoren mit Natrium-Metall zu Schichten (R<sub>2</sub>O)Na<sup>⊕</sup>-verknüpfter Kohlenwasserstoff-Dianionen.

Light-Induced Cycloaddition of Furan and addition of methanol to a 4-thiacyclohex-2-enone ( = 2,3-dihydro-4 H-thiin-4-one) and a 4-thiacyclopent-2-enone ( = thiophen-3(2 H)-one).