Works matching IS 0018019X AND DT 1993 AND VI 76 AND IP 5
Results: 27
Synthesis and NMR-Spectroscopic Structure Determination of Novel 7,7′-Diphenyl-7,7′-diapocarotenoids.
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- Helvetica Chimica Acta, 1993, v. 76, n. 5, p. 1939, doi. 10.1002/hlca.19930760512
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Masthead.
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- Helvetica Chimica Acta, 1993, v. 76, n. 5, p. fmi, doi. 10.1002/hlca.19930760501
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- Article
Oxidative Coupling of 6,6-Dimethylpentafulvenyl Anion.
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- Helvetica Chimica Acta, 1993, v. 76, n. 5, p. 2111, doi. 10.1002/hlca.19930760523
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Synthese und Pyrolyse einer Triafulven-Vorstufe.
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- Helvetica Chimica Acta, 1993, v. 76, n. 5, p. 2089, doi. 10.1002/hlca.19930760522
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Pteridines. Part C. Structure and nonenzymatic synthesis of aurodrosopterin.
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- Helvetica Chimica Acta, 1993, v. 76, n. 5, p. 1970, doi. 10.1002/hlca.19930760516
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Mitteilungen.
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- Helvetica Chimica Acta, 1993, v. 76, n. 5, p. 2160, doi. 10.1002/hlca.19930760527
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- Article
Synthese von Alkylphenolen und -pyrocatecholen aus Plectranthus albidus ( Labiatae).
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- Helvetica Chimica Acta, 1993, v. 76, n. 5, p. 1901, doi. 10.1002/hlca.19930760509
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The Effect of Electron-Donating and Electron-Withdrawing Substituents on <sup>1</sup>H-and <sup>13</sup>C-NMR chemical shifts of novel 7′-aryl-substituted 7′-apo-β-carotenes.
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- Helvetica Chimica Acta, 1993, v. 76, n. 5, p. 1928, doi. 10.1002/hlca.19930760511
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Synthesis of Aristotelia-Type Alkaloids. Part XII. Total synthesis of (−)-tasmanine. Stereoelectronic factors that control the rearrangement of 3 H-indol-3-ol derivatives to oxindoles ( = 1,3-dihydro-2 H-indol-2-ones) or to pseudoindoxyls ( =1,2-dihydro-3 H-indol-3-ones)
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- Helvetica Chimica Acta, 1993, v. 76, n. 5, p. 1847, doi. 10.1002/hlca.19930760505
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Introduction of a New Class of Ligands for the Metal-Catalyzed Enantioselective Synthesis.
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- Helvetica Chimica Acta, 1993, v. 76, n. 5, p. 1832, doi. 10.1002/hlca.19930760504
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Complex Formation of Pd<sup>II</sup> Ion with the Tripodal Ligand Tris[2-(dimethylamino)ethyl]amine.
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- Helvetica Chimica Acta, 1993, v. 76, n. 5, p. 1964, doi. 10.1002/hlca.19930760515
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The Crystal Structure of C<sub>70</sub> · 6(S<sub>8</sub>) at 100 K.
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- Helvetica Chimica Acta, 1993, v. 76, n. 5, p. 2155, doi. 10.1002/hlca.19930760526
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Isolierung und Struktur von langkettigen Alkylphenolen und -pyrocatecholen aus Plectranthus albidus ( Labiatae).
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- Helvetica Chimica Acta, 1993, v. 76, n. 5, p. 1890, doi. 10.1002/hlca.19930760508
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Catalytic Cyclophanes. Part VIII. Cytochrome P-450 activity of a porphyrin-bridged cyclophane.
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- Helvetica Chimica Acta, 1993, v. 76, n. 5, p. 2034, doi. 10.1002/hlca.19930760519
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Hetero- Diels- Alder cycloadditions of α,β-unsaturated acyl cyanides. Part 2. Reactions with N, N-dimethyluracils, a new route to 5-substituted uracil derivatives.
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- Helvetica Chimica Acta, 1993, v. 76, n. 5, p. 1916, doi. 10.1002/hlca.19930760510
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Preparation of optically active flowery and woody-like odorant ketones via Corey- Chaykovsky oxiranylation: Irones and analogues.
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- Helvetica Chimica Acta, 1993, v. 76, n. 5, p. 2070, doi. 10.1002/hlca.19930760521
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Preparation and ESR-Spectroscopical Investigation of Remarkably Persistent Oxoisobenzofuranyl Radicals.
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- Helvetica Chimica Acta, 1993, v. 76, n. 5, p. 1821, doi. 10.1002/hlca.19930760503
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Synthesis and Monoamine Oxidase Inhibitory Activity of 3-Substituted 5 H-Indeno[1,2- c]pyridazines.
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- Helvetica Chimica Acta, 1993, v. 76, n. 5, p. 1956, doi. 10.1002/hlca.19930760514
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Thiocarbonyl-imide aus der Umsetzung von 2,2,4,4-Tetramethyl-3-thioxocyclobutanon mit Aryl-aziden.
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- Helvetica Chimica Acta, 1993, v. 76, n. 5, p. 2147, doi. 10.1002/hlca.19930760525
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Chiral Acylsilanes in Organic Synthesis. Part 2. The role of the solvent, the organometallic reagent, and the nature of the substrate for the diastereoselectivity of 1,2-additions to racemic alkoxymethyl-substituted acylsilanes.
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- Helvetica Chimica Acta, 1993, v. 76, n. 5, p. 1876, doi. 10.1002/hlca.19930760507
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Cyclische Oligomere von ( R)-3-Hydroxybuttersäure: Herstellung und strukturelle Aspekte.
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- Helvetica Chimica Acta, 1993, v. 76, n. 5, p. 2004, doi. 10.1002/hlca.19930760518
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The Donor-Acceptor-Acceptor Purine Analog: Transformation of 5-aza-7-deaza-1 H-isoguanine (=4-aminoimidazo-[1,2- a]-1,3,5-triazin-2(1 H)-one) to 2′-deoxy-5-aza-7-deaza-isoguanosine using purine nucleoside phosphorylase.
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- Helvetica Chimica Acta, 1993, v. 76, n. 5, p. 2061, doi. 10.1002/hlca.19930760520
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7- Deazaadenosine: Oligoribonucleotide building block synthesis and autocatalytic hydrolysis of base-modified hammerhead ribozymes.
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- Helvetica Chimica Acta, 1993, v. 76, n. 5, p. 1809, doi. 10.1002/hlca.19930760502
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Synthesis and Absolute Configuration of the C<sub>12</sub>-Terpenoid Dehydrogeosmin from the Flower Scents of Rebutia marsoneri and Dolichothele sphaerica (Cactaceae); a new approach to bis-angularly substituted trans-decalins.
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- Helvetica Chimica Acta, 1993, v. 76, n. 5, p. 1949, doi. 10.1002/hlca.19930760513
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Magnetic-Field-Dependent Electronic Relaxation of Gd<sup>3+</sup> in Aqueous Solutions of the Complexes [Gd(H<sub>2</sub>O)<sub>8</sub>]<sup>3+</sup>, [Gd(propane-1,3-diamine- N, N, N′, N′-tetraacetate)(H<sub>2</sub>O)<sub>2</sub>]<sup>−</sup>, and [Gd( N, N′-bis[( N-methylcarbamoyl)methyl]-3-azapentane-1,5-diamine-3, N, N′-triacetate)(H<sub>2</sub>O)] of interest in magnetic-resonance imaging
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- Helvetica Chimica Acta, 1993, v. 76, n. 5, p. 2129, doi. 10.1002/hlca.19930760524
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Conformational Analysis of Open-Chain 1,2:3,4-Diepoxides: Comparison of crystal structures, NMR data, and molecular-orbital calculations.
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- Helvetica Chimica Acta, 1993, v. 76, n. 5, p. 1863, doi. 10.1002/hlca.19930760506
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Umsetzung von 3-Amino-2 H-azirinen mit Salicylohydrazid.
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- Helvetica Chimica Acta, 1993, v. 76, n. 5, p. 1980, doi. 10.1002/hlca.19930760517
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