Works matching IS 0018019X AND DT 1974 AND VI 57 AND IP 6
Results: 46
Structure of a Tricyclic Photoproduct C<sub>15</sub>H<sub>24</sub>O<sub>3</sub> by X-Ray Analysis.
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- Helvetica Chimica Acta, 1974, v. 57, n. 6, p. 1846, doi. 10.1002/hlca.19740570632
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Über Reaktionen oxygenierter Kobalt(II)-Chelate. II. Konfigurationsisomere Oxygenierungsprodukte von Tetraäthylenpentaminkobalt(II).
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- Helvetica Chimica Acta, 1974, v. 57, n. 6, p. 1493, doi. 10.1002/hlca.19740570603
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Vinca Alkaloids XXXIII [1]. Microbiological Conversions of Vincaleukoblastine (VLB, Vinblastine), an Antitumor Alkaloid from Vinca rosea. L INN.
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- Helvetica Chimica Acta, 1974, v. 57, n. 6, p. 1886, doi. 10.1002/hlca.19740570643
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Thermische Umlagerung von Propargyloxy-cycloheptatrien-Derivaten.
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- Helvetica Chimica Acta, 1974, v. 57, n. 6, p. 1598, doi. 10.1002/hlca.19740570614
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The Electronic Spectra of Unsubstituted Mono- to Pentaacetylene in the Gas Phase and in Solution in the Range 1100 to 4000 Å.
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- Helvetica Chimica Acta, 1974, v. 57, n. 6, p. 1731, doi. 10.1002/hlca.19740570625
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Photoaddition of Oxa-enones to 2-Chlorodifluoromethyl-3-chloro-3,3-difluoro-propene.
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- Helvetica Chimica Acta, 1974, v. 57, n. 6, p. 1866, doi. 10.1002/hlca.19740570636
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The Conjugative Interaction between π-Orbitals and Cyclobutane-Orbitals in Spiro[3.4]octa-5,7-diene and Spiro[3.4]octene-5.
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- Helvetica Chimica Acta, 1974, v. 57, n. 6, p. 1519, doi. 10.1002/hlca.19740570607
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Über Pterinchemie. 49. Mitteilung. Eine neue Synthese von 5-Formyl-6, 7-dimethyl-5,6,7,8-tetrahydropterin und 5,6,7-Trimethyl-5,6,7,8-tetrahydropterin.
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- Helvetica Chimica Acta, 1974, v. 57, n. 6, p. 1651, doi. 10.1002/hlca.19740570618
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Biosynthese der Cytochalasane. Teil II Die Grundbausteine von Cytochalasin D.
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- Helvetica Chimica Acta, 1974, v. 57, n. 6, p. 1785, doi. 10.1002/hlca.19740570629
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Grignard-Addition an Pyridin-N-oxid.
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- Helvetica Chimica Acta, 1974, v. 57, n. 6, p. 1676, doi. 10.1002/hlca.19740570620
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Spezifisch π→π*-induzierte Reaktionen von γ-Dimethoxymethylcyclohexen-2-onen: 1,3-Umlagerung und Wasserstoffabstraktion durch das α-Kohlenstoffatom.
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- Helvetica Chimica Acta, 1974, v. 57, n. 6, p. 1815, doi. 10.1002/hlca.19740570631
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Über Pterinchemie. 48. Mitteilung. Zur Herstellung und analytischen Charakterisierung reiner, hydrierter Pterine.
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- Helvetica Chimica Acta, 1974, v. 57, n. 6, p. 1485, doi. 10.1002/hlca.19740570602
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Silberioneninduzierte Reaktion von 3-Chlor-2-pyrrolidinocyclohexen mit 1,3-Dienen. Vorläufige Mitteilung.
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- Helvetica Chimica Acta, 1974, v. 57, n. 6, p. 1883, doi. 10.1002/hlca.19740570642
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Reaktionen von Glutaminsäuredimethylester im Massenspektrometer. 21. Mitteilung über das massenspektrometrische Verhalten von Stickstoffverbindungen.
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- Helvetica Chimica Acta, 1974, v. 57, n. 6, p. 1584, doi. 10.1002/hlca.19740570613
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Limitations of Affinity Chromatography: Solvolytic Detachment of Ligands from Polymeric Supports.
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- Helvetica Chimica Acta, 1974, v. 57, n. 6, p. 1718, doi. 10.1002/hlca.19740570624
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Synthesis and Structure of Tris (2′-[2-phenyl-1,3-dioxolano])-chromium(III).
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- Helvetica Chimica Acta, 1974, v. 57, n. 6, p. 1863, doi. 10.1002/hlca.19740570635
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Der massenspektrometrische Zerfall von Tetralin-Derivaten Beitrag zur massenspektrometrischen Retro- Diels-Alder Reaktion.
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- Helvetica Chimica Acta, 1974, v. 57, n. 6, p. 1510, doi. 10.1002/hlca.19740570606
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Mitteilungen.
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- Helvetica Chimica Acta, 1974, v. 57, n. 6, p. 1894, doi. 10.1002/hlca.19740570646
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Carotinoid-Glycoside. 1. Mitteilung. Partialsynthese und Charakterisierung von Zeaxanthin Mono- und Diglucosid.
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- Helvetica Chimica Acta, 1974, v. 57, n. 6, p. 1641, doi. 10.1002/hlca.19740570617
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Isolierung, Konstitution und Synthese der ( R)-(−)-Eucominsäure.
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- Helvetica Chimica Acta, 1974, v. 57, n. 6, p. 1766, doi. 10.1002/hlca.19740570628
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Automerisierung von 1,3,5,5-Tetramethylcyclohexa-1,3-dien. Vorläufige Mitteilung.
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- Helvetica Chimica Acta, 1974, v. 57, n. 6, p. 1872, doi. 10.1002/hlca.19740570639
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Biosynthesis of the Cytochalasans. Part III. <sup>13</sup>C-NMR. of cytochalasin B (phomin) and cytochalasin D. Incorporation of [1-<sup>13</sup>C]- and [2-<sup>13</sup>C]-sodium acetate.
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- Helvetica Chimica Acta, 1974, v. 57, n. 6, p. 1801, doi. 10.1002/hlca.19740570630
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Masthead.
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- Helvetica Chimica Acta, 1974, v. 57, n. 6, p. fmi, doi. 10.1002/hlca.19740570601
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1-Fluoro-benzocyclopropenium Ion from 1,1-difluoro-benzocyclopropene.
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- Helvetica Chimica Acta, 1974, v. 57, n. 6, p. 1881, doi. 10.1002/hlca.19740570641
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Hormone-Receptor Interactions. Synthesis of a biologically active cysteinyl-angiotensin derivative and its use for the preparation of spin-labelled and polymer-supported molecules.
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- Helvetica Chimica Acta, 1974, v. 57, n. 6, p. 1576, doi. 10.1002/hlca.19740570612
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Etude de la réactivité de la fonction carbonyle avec le cétène en présence d'un alcoxyde de titane. 2e communication. A propos de l'interprétation de quelques spectres RMN de β-hydroxyesters formés.
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- Helvetica Chimica Acta, 1974, v. 57, n. 6, p. 1713, doi. 10.1002/hlca.19740570623
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A Thermodynamic and Kinetic Study on the Stability of the Conformational States of N-Acetyl-proline-methylamide by IR. spectroscopy and chemical relaxation.
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- Helvetica Chimica Acta, 1974, v. 57, n. 6, p. 1859, doi. 10.1002/hlca.19740570634
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Utilisation d'ylides du phosphore en chimie des sucres. XX. Synthèse de sucres acétyléniques et réarrangment d'intermédiaires carbénoïdes. Communication préliminaire.
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- Helvetica Chimica Acta, 1974, v. 57, n. 6, p. 1505, doi. 10.1002/hlca.19740570605
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Erratum.
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- Helvetica Chimica Acta, 1974, v. 57, n. 6, p. 1893, doi. 10.1002/hlca.19740570645
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Zur Identifikation potentieller Metabolite von Cannabis-Inhaltstoffen: Kernresonanz- und massenspektroskopische Untersuchungen an seitenkettenhydroxylierten Cannabinoiden.
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- Helvetica Chimica Acta, 1974, v. 57, n. 6, p. 1626, doi. 10.1002/hlca.19740570616
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Etude par résonance paramagnétique électronique du radical (ΦNH)<sub>2</sub>P• piégé dans un monocristal de diphenylamino-phosphineoxyde irradié aux rayons X.
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- Helvetica Chimica Acta, 1974, v. 57, n. 6, p. 1761, doi. 10.1002/hlca.19740570627
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Zum Mechanismus der Imidazol-Katalyse der Cyclo-trimerisation und cis-trans Umlagerung von Maleinsäure-Derivaten.
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- Helvetica Chimica Acta, 1974, v. 57, n. 6, p. 1871, doi. 10.1002/hlca.19740570638
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Substituent Increments for the <sup>1</sup>H-NMR. Chemical Shifts of the 18- and 19-Methyl Protons of Steroids. Part I: 9β, 10α( Retro)-Steroids.
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- Helvetica Chimica Acta, 1974, v. 57, n. 6, p. 1549, doi. 10.1002/hlca.19740570609
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Tetrahalo- anti-bis-homoduroquinones by addition of dihalocarbenes to duroquinone.
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- Helvetica Chimica Acta, 1974, v. 57, n. 6, p. 1876, doi. 10.1002/hlca.19740570640
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Selektive Synthesen mit Organometallen I. Konfigurativ einheitliche Folgeprodukte aus Alkenylkalium-Zwischenstufen.
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- Helvetica Chimica Acta, 1974, v. 57, n. 6, p. 1567, doi. 10.1002/hlca.19740570611
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Etude de la réactivité de la fonction carbonyle avec le cétène en présence d'un alcoxyde de titane. 1ère communication. Nouvelle méthode de synthèse de β-hydroxyesters.
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- Helvetica Chimica Acta, 1974, v. 57, n. 6, p. 1703, doi. 10.1002/hlca.19740570622
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Photochemische Reaktionen. 78. Mitteilung. Anwendung der π → π*-induzierten Cyclisierung von α,β-ungesättigten γ-Dimethoxymethylketonen auf 19-Methoxy- bzw. 19-Dimethoxy-Steroid-enone und -dienone.
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- Helvetica Chimica Acta, 1974, v. 57, n. 6, p. 1851, doi. 10.1002/hlca.19740570633
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Synthese von 1,6-Trimethylen-3-methoxycarbonyl-4-methyl-2-pyridon.
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- Helvetica Chimica Acta, 1974, v. 57, n. 6, p. 1498, doi. 10.1002/hlca.19740570604
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Vinca alkaloids XXXIV. Preparation of des-N<sub>a</sub>-methyl-vindoline by microbiological conversion of vindoline, a major alkaloid from Vinca rosea L.
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- Helvetica Chimica Acta, 1974, v. 57, n. 6, p. 1891, doi. 10.1002/hlca.19740570644
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Cycloadditionen von Heterocumulenen an CN-Bindungssysteme. 3. Mitteilung. Bildung von Dihydro-1,3,5-oxadiazin- und Perhydro- s-triazinthionen bei der Reaktion von Iminodithiocarbonaten und Azomethinen mit Aroylisothiocyanaten.
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- Helvetica Chimica Acta, 1974, v. 57, n. 6, p. 1614, doi. 10.1002/hlca.19740570615
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Einsatz von Hochleistungs-Trennkapillaren in der GC.-EIMS./GC.-CIMS.-Analyse: Eine Möglichkeit zur massenspektrometrischen Doppelbindungscharakterisierung in komplexen Monoalkengemischen.
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- Helvetica Chimica Acta, 1974, v. 57, n. 6, p. 1744, doi. 10.1002/hlca.19740570626
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A Short Stereoselective Total Synthesis of Racemic Patchouli Alcohol. Preliminary communication.
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- Helvetica Chimica Acta, 1974, v. 57, n. 6, p. 1868, doi. 10.1002/hlca.19740570637
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Formation and Properties of Losod, a New Sodium Zeolite.
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- Helvetica Chimica Acta, 1974, v. 57, n. 6, p. 1533, doi. 10.1002/hlca.19740570608
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Arbeiten über Phosphorsäure- und Thiophosphorsäureester mit einem heterocyclischen Substituenten. 8. Mitteilung. Das Stäubli-Verfahren, eine Eintopf-Kondensation von Thiophosphorverbindungen (.
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- Helvetica Chimica Acta, 1974, v. 57, n. 6, p. 1658, doi. 10.1002/hlca.19740570619
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Substituent Increments for the <sup>1</sup>H-NMR. Chemical Shifts of the 18- and 19-Methyl Protons of Steroids. Part II: 9α,10β(normal)-steroids.
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- Helvetica Chimica Acta, 1974, v. 57, n. 6, p. 1559, doi. 10.1002/hlca.19740570610
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8-Oxabicyclo[5.1.0]octa-2,4-dien Thermische und lichtinduzierte Isomerisierung.
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- Helvetica Chimica Acta, 1974, v. 57, n. 6, p. 1692, doi. 10.1002/hlca.19740570621
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