Works matching IS 0018019X AND DT 1990 AND VI 73 AND IP 2

Results: 31

Synthesis of 8-Aza-1,3-dideaza-2′-deoxyadenosine and 5,6-Disubstituted Benzotriazole 2′-Deoxy-β- D-Ribofuranosides via Nucleobase-Anion Glycosylation.

Published in:

Helvetica Chimica Acta, 1990, v. 73, n. 2, p. 316, doi. 10.1002/hlca.19900730211

By:

Kazimierczuk, Zygmunt;
Seela, Frank

Publication type:

Article

Mammalian Alkaloids: O-Methylation of (±)-Norcoclaurine-1-carboxylic Acid and Related Isoquinolines Including ( S)- and ( R)-Norcoclaurine with 14C-Labeled S-Adenosyl- L-Methionine in Presence of Mammalian Catechol O-Methyltransferase.

Published in:

Helvetica Chimica Acta, 1990, v. 73, n. 2, p. 426, doi. 10.1002/hlca.19900730222

By:

Sekine, Yasuo;
Crevelling, Cyrns;
Bell, Maureen;
Brossi, Arnold

Publication type:

Article

The Bioconversion of (3 RS,E)- and (3 RS,Z)-Nerolidol into Oxygenated Products by Streptomyces cinnamonensis. Possible Implications for the Biosynthesis of the Polyether Antibiotic Monensin A??

Published in:

Helvetica Chimica Acta, 1990, v. 73, n. 2, p. 260, doi. 10.1002/hlca.19900730204

By:

Holmes, Duncan S.;
Ashworth, Doreen M.;
Robinson, John A.

Publication type:

Article

A Facile Synthesis of Optically Pure (−)-( S)-Ipsenol Using a Chiral Titanium Complex.

Published in:

Helvetica Chimica Acta, 1990, v. 73, n. 2, p. 353, doi. 10.1002/hlca.19900730215

By:

Oertle, Konrad;
Beyeler, Harry;
Duthaler, Rudolf O.;
Lottenbach, Willi;
Riediker, Martin;
Steiner, Eginhard

Publication type:

Article

Synthesis of the Enantiomerically Enriched Macrocyclic Lactones (+)-( S)- and (−)-( R)-Phoracantholide I and (+)-( S)-Tetradecan-13-olide.

Published in:

Helvetica Chimica Acta, 1990, v. 73, n. 2, p. 460, doi. 10.1002/hlca.19900730226

By:

Stanchev, Stephan;
Hesse, Manfred

Publication type:

Article

Regiochemical Trends in Intramolecular [2 + 2] Photocycloadditions of 6-(prop-2-enyl)cyclohex-2-enones and 5-(prop-2-enyl)cyclopent-2-enones.

Published in:

Helvetica Chimica Acta, 1990, v. 73, n. 2, p. 288, doi. 10.1002/hlca.19900730208

By:

Cruciani, Giuliano;
Margaretha, Paul

Publication type:

Article

Herstellung von 'Semialdehyd'-Derivaten von Asparaginsäure- und Glutaminsäure durch Rosenmund-Reduktion.

Published in:

Helvetica Chimica Acta, 1990, v. 73, n. 2, p. 405, doi. 10.1002/hlca.19900730219

By:

Bold, Guido;
Steiner, Heinz;
Moesch, Luzia;
Walliser, Bernhard

Publication type:

Article

Effets de substituant, d'hétéroatome et de solvant sur les cinétiques de décoloration thermique et les spectres d'absorption de photomérocyanines en série spiro[indoline-oxazine].

Published in:

Helvetica Chimica Acta, 1990, v. 73, n. 2, p. 303, doi. 10.1002/hlca.19900730210

By:

Pottier, Eliane;
Dubest, Roger;
Guglielmetti, Robert;
Tardieu, Pascale;
Kellmann, Arlette;
Tfibel, Francis;
Levoir, Patrick;
Aubard, Jean

Publication type:

Article

Potential antipsychotic agents. Part 8. Antidopaminergic properties of a potent series of 5-substituted (−)-( S)- N-[(1-ethylpyrrolidin-2-yl)methyl]-2,3-dimethoxybcnzaimides. Synthesis via common lithio intermediates.

Published in:

Helvetica Chimica Acta, 1990, v. 73, n. 2, p. 417, doi. 10.1002/hlca.19900730221

By:

Högberg, Thomas;
Ström, Peter;
Hall, Håkan;
Ögren, Sven Ove

Publication type:

Article

Synthesis of Putative Intermediates on the Monensin Biosynthetic Pathway and Incorporation Experiments with the Monensin-Producing Organism.

Published in:

Helvetica Chimica Acta, 1990, v. 73, n. 2, p. 239, doi. 10.1002/hlca.19900730203

By:

Holmes, Duncan S.;
Sherringham, John A.;
Dyer, Ulrich C.;
Russell, Simon T.;
Robinson, John A.

Publication type:

Article

Stereoselectivity and Chiral Recognition in the Electron-Transfer Reaction between Spinach Ferredoxin and Optically Active Cobalt(III) Complexes.

Published in:

Helvetica Chimica Acta, 1990, v. 73, n. 2, p. 346, doi. 10.1002/hlca.19900730214

By:

Bernauer, Klaus;
Monzione, Michel;
Schürmann, Peter;
Viette, Véronique

Publication type:

Article

New 20(10→5) abeo-Diterpenoids from Pygmaeopremna herbacea.

Published in:

Helvetica Chimica Acta, 1990, v. 73, n. 2, p. 455, doi. 10.1002/hlca.19900730225

By:

Meng, Qingchang;
Hesse, Manfred

Publication type:

Article

A New Catalytic System for the Hydroformylation of Styrene Using Alkene Complexes of Platinum(0).

Published in:

Helvetica Chimica Acta, 1990, v. 73, n. 2, p. 284, doi. 10.1002/hlca.19900730207

By:

Botteghi, Carlo;
Paganelli, Stefano;
Matteoli, Ugo;
Scrivanti, Alberto;
Ciorciaro, Rocco;
Venanzi, Luigi M.

Publication type:

Article

trans-Disubstituted Cyclohexadienes via Sequential Addition of a Carbon Nucleophile and an Electrophile to (η6-Benzene)tricarbonylchromium: Scope of Carbon Electrophiles.

Published in:

Helvetica Chimica Acta, 1990, v. 73, n. 2, p. 386, doi. 10.1002/hlca.19900730218

By:

Kündig, E. Peter;
Cunningham, Allan F.;
Paglia, Patrick;
Simmons, Dana P.;
Bernardinelli, Gérald

Publication type:

Article

Synthetic studies directed toward the pseurotins. Part II. Synthesis of related highly functionalized furan-3(2 H)-ones.

Published in:

Helvetica Chimica Acta, 1990, v. 73, n. 2, p. 483, doi. 10.1002/hlca.19900730229

By:

Dolder, Xie Shao Matthys;
Tamm, Christoph

Publication type:

Article

Synthese von 2-Oxo-2 H-pyran-5-Carboxylat-Derivaten.

Published in:

Helvetica Chimica Acta, 1990, v. 73, n. 2, p. 411, doi. 10.1002/hlca.19900730220

By:

Kvitu, Vratislav

Publication type:

Article

Mitteilungen.

Published in:: Helvetica Chimica Acta, 1990, v. 73, n. 2, p. 508, doi. 10.1002/hlca.19900730231
Publication type:: Article

Dipolare (1:1)-Addukte aus der Reaktion von 3-Amino-2 H-azirinen mit 1,3,4-Oxadiazol- und 1,3,4-Thiadiazol-2(3 H)-onen.

Published in:

Helvetica Chimica Acta, 1990, v. 73, n. 2, p. 492, doi. 10.1002/hlca.19900730230

By:

Ametamey, Simon M.;
Vincent, Beverly R.;
Heimgartner, Heinz

Publication type:

Article

Dehydrosulfurization of Isothiocyanates by Gas-Phase Fe(I) Cations.

Published in:

Helvetica Chimica Acta, 1990, v. 73, n. 2, p. 229, doi. 10.1002/hlca.19900730202

By:

Eller, Karsten;
Akkök, Semiha;
Schwarz, Helmut

Publication type:

Article

Diastereoselective Spirocyclization of C-(Alkyloxycarbonyl)formimines of 2-Substituted 1 HIndole-3-ethanamines (= Tryptamines): Basic Studies. 5th Communication on Indoles, Indolenines, and Indolines.

Published in:

Helvetica Chimica Acta, 1990, v. 73, n. 2, p. 439, doi. 10.1002/hlca.19900730224

By:

Freund, Ralf;
Mahboobi, Siavosh;
Noack, Klaus;
Schonhölzer, Peter;
Bernauer, Karl

Publication type:

Article

Isolation of the Cembranoid Preverecynarmin Alongside Some Briaranes, the Verecynarmins, from Both the Nudibranch Mollusc Armina maculata and the Octocoral Veretillum cynomorium of the East Pyrenean Mediterranean Sea.

Published in:

Helvetica Chimica Acta, 1990, v. 73, n. 2, p. 277, doi. 10.1002/hlca.19900730206

By:

Guerriero, Antonio;
D'Ambrosio, Michele;
Pietra, Francesco

Publication type:

Article

Dehydration of Alkanones by Bare FeO+ Involves the ω/(ω − 1) Positions: Exclusion of Iron Carbenes as Intermediates. Preliminary Communication.

Published in:

Helvetica Chimica Acta, 1990, v. 73, n. 2, p. 380, doi. 10.1002/hlca.19900730217

By:

Schröder, Detlef;
Eller, Karsten;
Schwarz, Helmut

Publication type:

Article

Further Studies on the Biosynthesis of Tabtoxin (Wildfire Toxin): Incorporation of [2,3-13C2]Pyruvate into the β-Lactam Moiety.

Published in:

Helvetica Chimica Acta, 1990, v. 73, n. 2, p. 476, doi. 10.1002/hlca.19900730228

By:

Roth, Patricia;
Hädener, Alfons;
Tamm, Christoph

Publication type:

Article

Über Pterin-Chemie 87. Mitteilung. Regiospezifische Synthese von (Polyhydroxypropyl)-pterinen: Herstellung von D-Anapterin und L-Primapterin.

Published in:

Helvetica Chimica Acta, 1990, v. 73, n. 2, p. 337, doi. 10.1002/hlca.19900730213

By:

Viscontini, Max;
Bosshard, René

Publication type:

Article

Masthead.

Published in:: Helvetica Chimica Acta, 1990, v. 73, n. 2, p. fmi, doi. 10.1002/hlca.19900730201
Publication type:: Article

Design and Synthesis of Novel Opiate Antagonists with LH-Stimulating Properties.

Published in:

Helvetica Chimica Acta, 1990, v. 73, n. 2, p. 326, doi. 10.1002/hlca.19900730212

By:

Revesz, Laszlo;
Siegel, Richard A.;
Buescher, Hans-Heinz;
Marko, Magda;
Maurer, Richard;
Meigel, Harald

Publication type:

Article

Structure Determination of a New Spirobicyclic Triterpenoid from Iris foetidissima.

Published in:

Helvetica Chimica Acta, 1990, v. 73, n. 2, p. 433, doi. 10.1002/hlca.19900730223

By:

Marner, Franz-Josef;
Karimi-Nejad, Yasmin;
Jaenicke, Lothar;
Wray, Victor

Publication type:

Article

Cycloalkylations of N-(ω-Halogenoalkyl)-substituted Macrocyclic Imides.

Published in:

Helvetica Chimica Acta, 1990, v. 73, n. 2, p. 272, doi. 10.1002/hlca.19900730205

By:

Ognyanov, Vassil I.;
Hesse, Manfred

Publication type:

Article

Halochrome Moleküle 9. Mitteilung[1]. Substituierte 6,11-Dihydrospiro[[1]benzopyrano[4,3- b]indol-6,9′-9′ H-xanthen]-2′,6′-diamine und ihre Aza-analogen: Neue Chromogene für schwarze Farbbilder.

Published in:

Helvetica Chimica Acta, 1990, v. 73, n. 2, p. 359, doi. 10.1002/hlca.19900730216

By:

Gunzenhauser, Sigmund;
Balli, Heinz

Publication type:

Article

Struktur der Valenciaxanthine und Valenciachrome.

Published in:

Helvetica Chimica Acta, 1990, v. 73, n. 2, p. 468, doi. 10.1002/hlca.19900730227

By:

Märki-Fischer, Edith;
Eugster, Conrad Hans

Publication type:

Article

Synthesis of Aristotelia-type alkaloids. Part V. Biomimetic synthesis of (±)-aristomakine and (±)-aristomakinine.

Published in:

Helvetica Chimica Acta, 1990, v. 73, n. 2, p. 298, doi. 10.1002/hlca.19900730209

By:

Burkard, Stefan;
Borsehberg, Hans-Jürg

Publication type:

Article

Works matching IS 0018019X AND DT 1990 AND VI 73 AND IP 2

Synthesis of 8-Aza-1,3-dideaza-2′-deoxyadenosine and 5,6-Disubstituted Benzotriazole 2′-Deoxy-β- D-Ribofuranosides via Nucleobase-Anion Glycosylation.

Mammalian Alkaloids: O-Methylation of (±)-Norcoclaurine-1-carboxylic Acid and Related Isoquinolines Including ( S)- and ( R)-Norcoclaurine with <sup>14</sup>C-Labeled S-Adenosyl- L-Methionine in Presence of Mammalian Catechol O-Methyltransferase.

The Bioconversion of (3 RS,E)- and (3 RS,Z)-Nerolidol into Oxygenated Products by Streptomyces cinnamonensis. Possible Implications for the Biosynthesis of the Polyether Antibiotic Monensin A??

A Facile Synthesis of Optically Pure (−)-( S)-Ipsenol Using a Chiral Titanium Complex.

Synthesis of the Enantiomerically Enriched Macrocyclic Lactones (+)-( S)- and (−)-( R)-Phoracantholide I and (+)-( S)-Tetradecan-13-olide.

Regiochemical Trends in Intramolecular [2 + 2] Photocycloadditions of 6-(prop-2-enyl)cyclohex-2-enones and 5-(prop-2-enyl)cyclopent-2-enones.

Herstellung von 'Semialdehyd'-Derivaten von Asparaginsäure- und Glutaminsäure durch Rosenmund-Reduktion.

Effets de substituant, d'hétéroatome et de solvant sur les cinétiques de décoloration thermique et les spectres d'absorption de photomérocyanines en série spiro[indoline-oxazine].

Potential antipsychotic agents. Part 8. Antidopaminergic properties of a potent series of 5-substituted (−)-( S)- N-[(1-ethylpyrrolidin-2-yl)methyl]-2,3-dimethoxybcnzaimides. Synthesis via common lithio intermediates.

Synthesis of Putative Intermediates on the Monensin Biosynthetic Pathway and Incorporation Experiments with the Monensin-Producing Organism.

Stereoselectivity and Chiral Recognition in the Electron-Transfer Reaction between Spinach Ferredoxin and Optically Active Cobalt(III) Complexes.

New 20(10→5) abeo-Diterpenoids from Pygmaeopremna herbacea.

A New Catalytic System for the Hydroformylation of Styrene Using Alkene Complexes of Platinum(0).

trans-Disubstituted Cyclohexadienes via Sequential Addition of a Carbon Nucleophile and an Electrophile to (η<sup>6</sup>-Benzene)tricarbonylchromium: Scope of Carbon Electrophiles.

Synthetic studies directed toward the pseurotins. Part II. Synthesis of related highly functionalized furan-3(2 H)-ones.

Synthese von 2-Oxo-2 H-pyran-5-Carboxylat-Derivaten.

Mitteilungen.

Dipolare (1:1)-Addukte aus der Reaktion von 3-Amino-2 H-azirinen mit 1,3,4-Oxadiazol- und 1,3,4-Thiadiazol-2(3 H)-onen.

Dehydrosulfurization of Isothiocyanates by Gas-Phase Fe(I) Cations.

Diastereoselective Spirocyclization of C-(Alkyloxycarbonyl)formimines of 2-Substituted 1 HIndole-3-ethanamines (= Tryptamines): Basic Studies. 5th Communication on Indoles, Indolenines, and Indolines.

Isolation of the Cembranoid Preverecynarmin Alongside Some Briaranes, the Verecynarmins, from Both the Nudibranch Mollusc Armina maculata and the Octocoral Veretillum cynomorium of the East Pyrenean Mediterranean Sea.

Dehydration of Alkanones by Bare FeO<sup>+</sup> Involves the ω/(ω − 1) Positions: Exclusion of Iron Carbenes as Intermediates. Preliminary Communication.

Further Studies on the Biosynthesis of Tabtoxin (Wildfire Toxin): Incorporation of [2,3-<sup>13</sup>C<sub>2</sub>]Pyruvate into the β-Lactam Moiety.

Über Pterin-Chemie 87. Mitteilung. Regiospezifische Synthese von (Polyhydroxypropyl)-pterinen: Herstellung von D-Anapterin und L-Primapterin.

Masthead.

Design and Synthesis of Novel Opiate Antagonists with LH-Stimulating Properties.

Structure Determination of a New Spirobicyclic Triterpenoid from Iris foetidissima.

Cycloalkylations of N-(ω-Halogenoalkyl)-substituted Macrocyclic Imides.

Halochrome Moleküle 9. Mitteilung[1]. Substituierte 6,11-Dihydrospiro[[1]benzopyrano[4,3- b]indol-6,9′-9′ H-xanthen]-2′,6′-diamine und ihre Aza-analogen: Neue Chromogene für schwarze Farbbilder.

Struktur der Valenciaxanthine und Valenciachrome.

Synthesis of Aristotelia-type alkaloids. Part V. Biomimetic synthesis of (±)-aristomakine and (±)-aristomakinine.