Library

feed icon rss

Your email was sent successfully. Check your inbox.

An error occurred while sending the email. Please try again.

Proceed reservation?

Export
  • 11
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Angewandte Makromolekulare Chemie 185 (1991), S. 329-334 
    ISSN: 0003-3146
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Physics
    Additional Material: 1 Ill.
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
  • 12
    ISSN: 0006-3525
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: The fixation of cis (NH3)2Cl2Pt(II) to poly(I)·poly(C) leads to the formation of two complexed species. One involves coordination to a single base (accounting for about 70% of the total platinum bound over the rb range 0.07-0.25) and the other to two bases which are not adjacent to each other but may be on the same strand and separated by a loop. Reaction of the platinum compound with poly(I) gives in addition to the above two species a minor one (about 15%, independent of rb over the range 0.05-0.30) in which the platinum is bound to two adjacent bases. The availability of such coordination reduces the dominance of the 1:1 species, which, however, remains the major one (ca. 55%).
    Additional Material: 3 Ill.
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
  • 13
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Chemie in unserer Zeit 8 (1974), S. 129-134 
    ISSN: 0009-2851
    Keywords: Chemistry ; Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Additional Material: 7 Ill.
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
  • 14
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Angewandte Makromolekulare Chemie 211 (1993), S. 141-155 
    ISSN: 0003-3146
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Physics
    Description / Table of Contents: Die after-glow Plasmapolymerisation wird als neues Verfahren zur Herstellung polymerer Schichten aus ungesättigten Monomeren vorgestellt. Als Monomeres wird ein optisch aktiver Acrylsäureester verwendet. Die Abscheidekinetik wird durch Variation von Monomerfluß, Fluß und Art des Hilfsgases (He, Ne, Ar, Kr) Abstand zwischen Plasma und Substrat, Druck und nomineller Plasmaleistung untersucht. Die erhaltenen Polymeren sind optisch aktiv und lassen sich mittels IR_Spektroskopie nicht von den in Masse polymerisierten Analoga unterscheiden. Die Polymeren sind meist vernetzt und damit unlöslich. NMR-Spektren von Löslichen Proben zeigen, daß es sich um atktische Polymere handelt. Die after-glow Plasmapolymerisation verläuft über einen radikalischen Kettenwachstumsmechanismus. Membranchichten aus den erhaltenen Polymeren sind in der Lage, Racemate zu trennen.
    Notes: After-glow plasma polymerization is described as a new method to prepare polymeric layers from unsaturated monomers. An optically active acrylic monomer is used in this investigation. The deposition rates are given as functions of plasma power, pressure, distance between plasma and deposition zone, flux and kind of auxiliary gas (He, Ne, Ar, Kr) and of monomer flux. The polymers prepared are optically active, the IR spectra comply with those of polymers synthesized in bulk. Mostly the polymers prepared by after-glow plasma polymerization are cross-linked and therefore insoluble. NMR spectra of soluble samples show that the polymers are atactic. After-glow plasma polymerization occurs by a radical chain growth mechanism. Membranes made from these polymers are able to separate racemates.
    Additional Material: 9 Ill.
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
  • 15
    Electronic Resource
    Electronic Resource
    New York : Wiley-Blackwell
    Biopolymers 17 (1978), S. 2445-2457 
    ISSN: 0006-3525
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: The application of rotating frame spin-lattice relaxtion to the determination of the intramolecular motions in peptides is discussed, and results are presented on the application of 13C T1p to peptide microdynamics in solution. The effective molecular rotational reorientation times at the amide and amino nitrogens may be derived from appropriate data onT1p of the carbons adjacent to them. We also show by theoretical caculations that 1H and 13C T1p experiments of suitable 2H and 15N substituted peptides will allow intramolecular main- and sidechain motions, characterized by times in the range 10-1-10-6 sec, to be investigated.
    Additional Material: 4 Tab.
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
  • 16
    Electronic Resource
    Electronic Resource
    New York : Wiley-Blackwell
    Biopolymers 23 (1984), S. 1143-1143 
    ISSN: 0006-3525
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
  • 17
    ISSN: 0006-3525
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: The 21-peptide amide antibiotic gallidermin is a potential therapeutic against acne disease. It belongs to the class of polycyclic lanthionine and α,β-clidehydroamino acids containing polypeptides, which were named “lantibiotics.” The structural gene of the recently elucidated lantibiotic gallidermin encodes a precursor peptide containing Ser, Thr, and Cys residues in the Oterminal prolantibiotic part, and an unusually hydrophilic leader peptide. The ribosomally synthesized pregallidermin is posttranslationally modified and processed to a complex peptide antibiotic with four/sulfide rings and two unsaturated residues.The complete solution structure of gallidermin was determined in triffuoroethanol : water (95 : 5) and dimethylsulfoxide by two-dimensional 1H-nmr at 500 MHz, using a combination of double quantum filtered correlated spectroscopy, homonuclear Hartman-Hahn, and nuclear Overhauser enhancement spectroscopy experiments. Using a total number of 152 distance constraints from NOEs and 14 torsional constraints, derived from coupling constants, we obtained a screwlike solution structure of gallidermin. Restrained molecular dynamics simulations yielded a set of five converging structures with an atomic rms difference of 1.7 Å for the backbone atoms, not dependent on the starting structure. The spatial structure model is in excellent agreement with the amphiphilic and channel-forming properties of gallidermin on membranes and its tryptic cleavage at the exposed site between residues 13 and 14.
    Additional Material: 5 Ill.
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
  • 18
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 92 (1959), S. 1135-1139 
    ISSN: 0009-2940
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Die Umsetzung von Tetraacetyl-α-D-glucopyranosylbromid und Tetraacetyl-6-trityl-β-D-glucopyranose mit Silberperchlorat oder Silberfluoroborat in Nitromethan liefert in guter Ausbeute Octaacetyl-β-gentiobiose. Die gleiche Umsetzung mit einem Überschuß an Tetraacetyl-α-D-glucopyranosylbromid und Silberperchlorat führt zur Octaacetyl-α-gentiobiose. Es wird eine Deutung des Reaktionsablaufs gegeben.
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
  • 19
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 92 (1959), S. 1184-1188 
    ISSN: 0009-2940
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Die Einwirkung von Aryldiazoniumsalzen auf verschiedene monoalkylierte Dihydroresorcine wurde untersucht. Dabei wurden im glatten Reaktionsverlauf δ-Keto-δ-arylhydrazono-carbonsäuren erhalten. Die gleiche Reaktion führte beim 2-Acetamino-dihydroresorcin infolge einer sekundär verlaufenden Wasserabspaltung zu einem Derivat des 1.2.4-Triazols, dessen Konstitution bewiesen wurde.
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
  • 20
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 93 (1960), S. 603-607 
    ISSN: 0009-2940
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Bei der Kondensation von Dihydroresorcin mit β-Brom-α-keto-buttersäure wurde 2-Methyl-4-oxo-4.5.6.7-tetrahydro-cumaron-carbonsäure-(3) erhalten. Entsprechend ergab die Kondensation mit α-Chlor-acetessigester 3-Methyl-4-oxo-4.5.6.7-tetrahydro-cumaron-carbonsäure-(2). Die Übertragung dieser Reaktion auf 1-Methyl-cyclohexandion-(3.5) lieferte 3.6-Dimethyl-4-oxo-4.5.6.7-tetrahydro-cumaron-carbonsäure-(2), die mit Cinchonidin in die optischen Antipoden gespalten wurde. Die Decarboxylierung der linksdrehenden Säure führte zum Evodon, aus dem mittels Wolff-Kishner-Reduktion Menthofuran gewonnen wurde.
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
Close ⊗
This website uses cookies and the analysis tool Matomo. More information can be found here...