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  • 1990-1994  (2)
  • 1960-1964  (4)
  • Chemistry  (6)
  • 1
    Electronic Resource
    Electronic Resource
    Enzymatic resolutions of α- and β-hydroxypropionic acid esters (1992)
    New York, NY [u.a.] : Wiley-Blackwell
    Chirality 4 (1992), S. 103-109 
    Details
    ISSN: 0899-0042
    Keywords: dihydrocinnamic acid derivatives ; hydroxy azido acids ; hydroxy amino acids ; enantioselective hydrolysis ; Pseudomonas fl. lipase ; Candida cyclindracea lipase ; Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: The synthesis of some acyloxy-methoxy-cinnamic acid derivatives, azidohydroxy butanoates, and azidohydroxy butanedioates in enantiomerically pure form is presented. Racemic diastereomerically pure educts were prepared in few steps. These racemates are resolved with lipases from Candida cylindracea (CC) and Pseudomonas fluorescens (P).
    Additional Material: 1 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/chir.530040207
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Pseudocritical constants for gas mixtures (1960)
    Hoboken, NJ : Wiley-Blackwell
    AIChE Journal 6 (1960), S. 171-172 
    Details
    ISSN: 0001-1541
    Keywords: Chemistry ; Chemical Engineering
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
    Additional Material: 2 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/aic.690060135
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    On the dependence of molecular conformation on the type of solvent environment: A molecular dynamics study of cyclosporin A (1990)
    New York : Wiley-Blackwell
    Biopolymers 29 (1990), S. 1669-1687 
    Details
    ISSN: 0006-3525
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: The dependence of the conformation of cyclosporin A (CPA), a cyclic undecapeptide with potent immunosuppressive activity, on the type of solvent environment is examined using the computer simulation method of molecular dynamics (MD). Conformational and dynamic properties of CPA in aqueous solution are obtained from MD simulations of a CPA molecule dissolved in a box with water molecules. Corresponding properties of CPA in apolar solution are obtained from MD simulation of CPA in a box with carbontetrachloride. The Results of these simulations in H2O and in CCl4 are compared to each other and to those of previous simulations of crystalline CPA and of an isolated CPA molecule.The conformation of the backbone of the cyclic polypeptide is basically independent of the type of solvent. In aqueous solution the β-pleated sheet is slightly weaker and the γ-turn is a bit less pronounced than in apolar solution. Side chains may adopt different conformations in different solvents. In apolar solution the hydrophobic side chain of the MeBmt residue is in an extended conformation with its hydroxyl group hydrogen bonded to the backbone carbonyl group. In aqueous solution this hydrophobic side chain folds over the core of the molecule and the mentioned hydrogen bond is broken in favor of hydrogen bonding to water molecules. The conformation obtained from the MD simulation in CCl4 nicely agrees with experimental atom-atom distance data as obtained from nmr experiments in chloroform. In aqueous solution the relaxation of atomic motion tends to be slower than in apolar solution.
    Additional Material: 8 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/bip.360291214
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    Paper (German National Licenses)
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  • 4
    Electronic Resource
    Electronic Resource
    Study of the interaction of organic monomers and water with fiberglass by Sorption methods (1961)
    Stamford, Conn. [u.a.] : Wiley-Blackwell
    Polymer Engineering and Science 1 (1961), S. 191-198 
    Details
    ISSN: 0032-3888
    Keywords: Chemistry ; Chemical Engineering
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Notes: Interfacial reactions between organosilane-treated fiberglass and styrene, and bond conditions in these and in polymerized ethylene oxide and epichlorhydrin-E-glass systems were investigated. The vinyl functionality of some alkenylsilanes showed little effect on the polymerization of styrene on E-glass. The polymerization of this aromatic monomer on vinyltrichlorosilane-reacted fiberglass did not result in interfacial bond formation. Sorption of water on organosilane-coated glass at different temperatures suggested that permeation of the adsorbate into the bulk of the substrate was determined by diffusive transfer of water molecules.
    Additional Material: 10 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/pen.760010410
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    Paper (German National Licenses)
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  • 5
    Electronic Resource
    Electronic Resource
    Die Strukturen der mittleren Ringverbindungen. VII. 1,6-trans-Dibromcyclodecan (1964)
    New York, NY : Wiley-Blackwell
    Helvetica Chimica Acta 47 (1964), S. 951-956 
    Details
    ISSN: 0018-019X
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Crystals of 1,6-trans-dibromcyclodecane are monoclinic, a = 7,94, b =5,65, c = 12,78 A, β = 106° 47′, space group P2, lc. The unit cell contains two centrosymmetric molecules. The crystal structure has been determined by analysis of the three prin- cipal projections. The ring skeleton has the same conformation as that found in all previously studied cyclodecane compounds, with the substituents in (IIe, IIe) positions.
    Additional Material: 6 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/hlca.19640470406
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    Paper (German National Licenses)
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  • 6
    Electronic Resource
    Electronic Resource
    Die Strukturen der mittleren Ringverbindungen VIII. Azacyclododecan-hydrochlorid (1964)
    New York, NY : Wiley-Blackwell
    Helvetica Chimica Acta 47 (1964), S. 1138-1147 
    Details
    ISSN: 0018-019X
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Crystals of azacyclododecane hydrochloride (a = 13.77, b = 5.07, c = 9.67 Å, α = 109°26′, β = 90°22′, γ = 101°16′) and hydrobromide (a = 13.53, b = 5.19, c = 9.45 Å, α = 99°40′, β = 83°57′, γ = 98°28′) are isomorphous, space group P1, Z = 2. The conformation of the 12-membered ring has been established from three-dimensional X-ray analysis. It corresponds closely to the idealized model with 422-symmetry, containing 8 syn-clinal and 4 anti-periplanar partial conformations.
    Additional Material: 7 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/hlca.19640470504
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    Paper (German National Licenses)
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