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  • Cell & Developmental Biology  (59)
  • Organic Chemistry  (58)
  • Wiley-Blackwell  (117)
  • American Institute of Physics
  • Institute of Physics (IOP)
  • Springer Nature
  • 2015-2019
  • 1995-1999  (68)
  • 1975-1979  (21)
  • 1945-1949  (28)
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  • Wiley-Blackwell  (117)
  • American Institute of Physics
  • Institute of Physics (IOP)
  • Springer Nature
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  • 1
    Electronic Resource
    Electronic Resource
    Spectrophotometric Study of Some Arylidene Derivatives of Benzoic and Salicylic Acid Hydrazides in Buffer Solutions (1978)
    New York, NY : Wiley-Blackwell
    Journal für Praktische Chemie/Chemiker-Zeitung 320 (1978), S. 1029-1035 
    Details
    ISSN: 0021-8383
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Spektrophotometrische Untersuchungen einiger Arylidenderivate von Benzoe- und Salicylsäurehydraziden in Pufferlösungen
    Additional Material: 2 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/prac.19783200620
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  • 2
    Electronic Resource
    Electronic Resource
    Transmission EELS of oxide superconductors with a cold field emission TEM (1995)
    New York, NY [u.a.] : Wiley-Blackwell
    Microscopy Research and Technique 30 (1995), S. 208-217 
    Details
    ISSN: 1059-910X
    Keywords: Superconductors ; Electron energy loss spectrometry ; Transmission electron microscope ; Life and Medical Sciences ; Cell & Developmental Biology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Natural Sciences in General
    Notes: Electron energy loss spectrometry (EELS) with a cold field emission gun (cFEG) transmission electron microscope (TEM) is implemented to analyze the evolution of the electronic structure and dielectric function of oxide superconductors. The O-K core loss spectra of p-type doped oxide superconductors are analyzed in terms of holes formation on oxygen sites, while low loss spectra are analyzed for free carrier plasmas, other spectral excitations, and their crystallographic confinement.It is illustrated that the transmission EELS with a cFEG TEM very much complement soft X-ray absorption spectroscopy and optical spectroscopy, with the added advantages of high spatial resolution (∼1-100 nm), and is compatible with other analytical, diffraction, and imaging techniques, which are readily available in a cFEG TEM. © 1995 Wiley-Liss, Inc.
    Additional Material: 10 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/jemt.1070300303
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  • 3
    Electronic Resource
    Electronic Resource
    Inhibition of rabbit sperm acrosomal enzymes by gossypol (1995)
    New York, NY [u.a.] : Wiley-Blackwell
    Molecular Reproduction and Development 40 (1995), S. 228-232 
    Details
    ISSN: 1040-452X
    Keywords: Gossypol ; Sperm ; Acrosomal enzymes ; Rabbit ; Life and Medical Sciences ; Cell & Developmental Biology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology
    Notes: The effect of gossypol on the activities of 10 acrosomal enzymes of the rabbit sperm was evaluated. Acrosin, Azocoll proteinase, neuraminidase, and arylsulfatase were significantly inhibited or completely inactivated by 12-76 μM gossypol. Hyaluronidase, β-glucuronidase, and acid phosphatase were inhibited only at a higher concentration of gossypol (380 μM). Phospholipase C, alkaline phosphatase, and β-N-Acetyl glucosaminidase were not inhibited even at 380 μM gossypol. Gossypol was found to be a noncompetitive inhibitor of arylsulfatase with a Ki of 120 μM. The inhibition was reversible and dose-dependent. As the acrosomal enzymes were more sensitive to the inhibition by gossypol compared to sperm enzymes involved in glycolysis or energy production, these assays may serve as a more reliable indicator for monitoring the occurence of gossypol-induced sterility. © 1995 Wiley-Liss, Inc.
    Additional Material: 5 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/mrd.1080400212
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  • 4
    Electronic Resource
    Electronic Resource
    Reactions of Acetylenic Esters with Cyclic Ketones and Substituted Acetophenones (1979)
    New York, NY : Wiley-Blackwell
    Journal für Praktische Chemie/Chemiker-Zeitung 321 (1979), S. 899-904 
    Details
    ISSN: 0021-8383
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Reaktionen von Acetylenestern mit cyclischen Ketonen und substituierten AcetophenonenDie Kondensation von substituierten Phenylpropiolsäureestern mit cyclischen Ketonen führt zu polycyclischen Pyronen. Die Kombination spektroskopischer Methoden zeigt, daß Cyclopentanon zu 4-Pyronen (I), Cyclohexanon, Cycloheptanon, Cyclooctanon dagegen zu 2-Pyronen (IIa-f) reagiert.Die Kondensation von Ethylarylpropiolaten mit p-Piperazino, p-Piperidino, p(4-Methylpiperazino) und p-Morpholinoacetophenonen ergibt die p-(4-Arylpropiolylpiperazino) acetophenone (IIIa-d), 2-(p-Piperidinophenyl)-6-aryl-4-pyrone (IVa-c), 2-(p-4-Methylpiperazino-phenyl)-6-aryl-4-pyrone (Va-c) und 2-(p-Morpholinophenyl)-6-aryl-4-pyrone (VIa - d). Die Acetylen-β-diketone (VII) erhält man aus Ethyl-p-tolylpropiolat mit p-Piperidinoacetophenon.
    Additional Material: 2 Tab.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/prac.19793210603
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  • 5
    Electronic Resource
    Electronic Resource
    Laboratory contamination associated with supercritical fluid extraction operations (1995)
    New York, NY [u.a.] : Wiley-Blackwell
    Applied Organometallic Chemistry 9 (1995), S. 365-365 
    Details
    ISSN: 0268-2605
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/aoc.590090410
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  • 6
    Electronic Resource
    Electronic Resource
    Photo-CIDNP. Investigation of β,γ-Unsaturated Ketones: Evidence for Temperature-dependent S1 vs. T2 Reactivities of Cyclopent-2-enyl Methyl KetonesDedicated to Professor Egbert Havinga on the occasion of his 70th anniversary (1979)
    New York, NY : Wiley-Blackwell
    Helvetica Chimica Acta 62 (1979), S. 1952-1965 
    Details
    ISSN: 0018-019X
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: On ultraviolet irradiation of the cyclopent-2-enyl methyl ketones 1a-c at -54° ≤ t ≤ 139°, photo-CIDNP. effects of the starting ketones, the 1,3-acetyl shifted isomers (2), and radical disproportionation and combination products (4-7) were observed. These effects show a unique dependence of the polarization phase on temperature which is a novel feature in photo-CIDNP. studies. The results of the investigation, which also included experiments using triplet quenchers, triplet sensitizers and radical scavengers, are rationalized in terms of Schemes 2 and 3.α-Cleavage is a major excited-state reaction of 1a-c on direct irradiation. Temperature-activated α-cleavage (kaS(t)) to the radical pair R · · R′1 and intersystem crossing (kisc) to the T2 state are among the competing S1 deactivation processes. The T2 state in turn cleaves (kaT2) to R · · R′3 A ‘low-temperature range’ with kisc ≫ kaS(t) and a ‘high-temperature range’ with kaS(t) ≫ kisc exhibiting preferential reactivity from the T2 and S1 states, respectively, can be defined for all three β,γ-unsaturated ketones 1a-c.
    Additional Material: 3 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/hlca.19790620624
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  • 7
    Electronic Resource
    Electronic Resource
    Solid-Phase Total Synthesis of Cyclosporine Analogues (1997)
    New York, NY : Wiley-Blackwell
    Helvetica Chimica Acta 80 (1997), S. 695-705 
    Details
    ISSN: 0018-019X
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Syntheses of cyclosporine analogues are reported wherein the peptide couplings were achieved in solid phase. The Wang resin was used as the solid support, and the peptide couplings commenced with the residue 11 of the cyclosporine skeleton. The couplings proceeded in a stepwide manner up to the residue MeBmt1, using symmetric anhydrides. The peptides were then cleaved off the resin, and the cyclization was achieved in solution using Castro's reagent. The solid-phase synthesis described herein offers a very efficient method for the rapid synthesis of structurally diverse cyclosporine analogues in small quantities. The biological activities of the synthetic cyclosporine analogues were evaluated in two in vitro assays, including the IL-2 reporter gene assay and the cyclophilin binding assay. The structure-activity relationship is discussed.
    Additional Material: 2 Tab.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/hlca.19970800307
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  • 8
    Electronic Resource
    Electronic Resource
    Un dosage colorimétrique des fluorures (1946)
    New York, NY : Wiley-Blackwell
    Helvetica Chimica Acta 29 (1946), S. 521-525 
    Details
    ISSN: 0018-019X
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/hlca.19460290305
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  • 9
    Electronic Resource
    Electronic Resource
    Etudes sur les matières végétales volatiles. XXXIX. Sur la présence de linalol, d'acétate de linalyle et de terpinéol dans l'essence de petit-grain bigaradier (1946)
    New York, NY : Wiley-Blackwell
    Helvetica Chimica Acta 29 (1946), S. 553-563 
    Details
    ISSN: 0018-019X
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: L'essence de petit-grain bigaradier renferme de l'acétate de linalyle lévogyre, un mélange de linalols faiblement lévogyre, un mélange de terpinéols d'activité voisine de + 40°, des esters du géraniol et des esters du nérol.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/hlca.19460290307
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  • 10
    Electronic Resource
    Electronic Resource
    A propos de ma communication intitulée: Sur l'évaluation des alcools tertiaires dans les huiles essentielles (1946)
    New York, NY : Wiley-Blackwell
    Helvetica Chimica Acta 29 (1946), S. 1060-1060 
    Details
    ISSN: 0018-019X
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/hlca.19460290509
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