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  • 1
    Electronic Resource
    Electronic Resource
    Schiff Base Complexes of Rhodium(I) with Tridentate N-Methyl-S-methyldithiocarbazate Ligands NCL Communication No. 3827. (1986)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 536 (1986), S. 173-178 
    Details
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Schiffsche Basen-Komplexe des Rhodium(I) mit dreizähnigen N-Methyl-S-methyldithiocarbazat-LigandenSchiffsche Basen aus der Kondensation von β-Diketonen mit N-Methyl-S-methyl-dithiocarbazaten ergeben bei Reaktion mit [Rh(μ-Cl)(CO)2]2 cis-Dicarbonyl-Komplexe Rh(CO)2(Schiff). Die aus aromatischen Aldehyden erhaltenen bilden trans-Dicarbonyl-Komplexe. Mit einem Überschuß von Triphenylphosphin ergeben diese Komplexe nur Rh(CO)(PPh3)(Schiff). Cis-1,5-cyclooctadien (COD) reagiert mit cis-Dicarbonyl-Komplexen zu carbonylfreien Produkten Rh(COD)(Schiff); gleiche Reaktionen wurden bei trans-Dicarbonyl-Komplexen beobachtet. Oxydative Addition von Brom an diese Komplexe ergibt Dibromderivate, in denen die Schiffsche Base als zweizähniger Ligand wirkt, Rh(PPH3)2(Schiff)-Komplexe wurden durch Reaktion oben genannter Schiffscher Basen mit Rh(PPh3)3Cl erhalten. Die Strukturen dieser neuen Komplexe wurden auf Grund von IR-und 1H-NMR-Spektren bestimmt.
    Notes: Schiff bases derived from the condensation of β-diketones with N-methyl-S-methyldithiocarbazates yield cis dicarbonyl complexes Rh(CO)2 (Schiff) on reaction with [Rh(μ-Cl)(CO)2]2. Those derived from aromatic aldehydes form trans dicarbonyl complexes. These complexes with excess of triphenylphosphine give only Rh(CO)(PPh3)(Schiff). cis-1,5-cyclooctadiene (COD) reacts with cis dicarbonyl complexes to yield the carbonyl-free product Rh(COD)(Schiff); similar reactions have not been observed in the case of trans-dicarbonyl complexes. Oxidative addition of bromine to these complexes yields dibromo derivative in which the Schiff base acts as bidentate chelate. Rh(PPh3)2(Schiff) complexes have been obtained from the reaction of above Schiff bases with Rh(PPh3)3Cl. The structures of these new complexes have been determined based on IR and 1H NMR spectra.
    Additional Material: 2 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19865360520
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  • 2
    Electronic Resource
    Electronic Resource
    Novel chelated compounds of Bis-β-carbomethoxyethltin(IV) (1980)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 465 (1980), S. 204-208 
    Details
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Neue Chelate des Bis-β- Carbomethoxyethlzinn(IV)Zwei- und dreizähnige Chelatinganden (s. Abstract) Können die Chloratome des Bis-β-carbomethoxethyldichlozinn(IV) unter Bildung neuer stabiler Chelatverbindungen ersetzen. Bromierung dieser Verbindungen unter milden Bedingungen zeigt, daß die Chelatinganden bevorzugt abgespalten werden. Die neun Verbindungen werden durch Elementaranalyse, IR- und PMR-Spektren sowie Molekulargewichtsbestimmungen Charakterisiert und mögliche Strukturen werden Vorgeschlagen.
    Notes: Bi- and tri-denate Chelating ligands (acetylacetone, salicylasehyde, 8-hydroxy quinoline, dibenzoylmethane, benzoyl phenhydroxlmanine, 2-hydroxy benzophenone, 2-hydroxy 4-methoxy benzophenone and salichyaldine) replace cholrine atoms of bis-β-carbomethoxyethyl dischlorotin (IV) to form new stable Cheleted compounds. Bromination studies under mild conditions indicate that in these compounds the Cheleated ligand part is preferentially cleaved. The new compounds are characterized by elemental analysis. IR and PMR spectra and molecular weight, and possible structures have been assigned.
    Additional Material: 1 Tab.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19804650124
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  • 3
    Electronic Resource
    Electronic Resource
    Cationic Ruthenium(II) Carbonyl Complexes with Nitrile LigandsNCL Communication No. 3625. (1985)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 527 (1985), S. 203-207 
    Details
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Kationische Carbonyl-Ruthenium(II)-Komplexe mit Nitril-LigandenStabile kationische Komplexe vom Typ [RuCO(PPh3)2(L)RCN]+[ClO4]-, mit Acetonitril bzw. Acrylonitril wurden dargestellt. Als zweizähnige Liganden (LH) dienten Acetylaceton, Benzoylaceton, Dibenzoylmethan, Trifluorothenoylaceton und 8-Hydroxochinolin. Die Komplexe wurden analysiert, ferner durch IR-, 1H- und 31P-NMR-, Leitfähigkeits- und ESCA-Messungen charakterisiert; eine Stereochemie erscheint möglich.
    Notes: Stable cationic complexes of the type [RuCO(PPh3)2(L)(RCN)]+[ClO4]- derived from acetonitrile and acrylonitrile have been synthesized. The bidentate ligands (LH) used are acetylacetone, benzoylacetone, dibenzoylmethane, trifluorothenoyl acetone and 8-hydroxyquinoline. The complexes have been characterized by elemental analysis, IR, conductivity, 1H and 31P NMR and ESCA studies, and possible stereochemistry has been established.
    Additional Material: 2 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19855270823
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  • 4
    Electronic Resource
    Electronic Resource
    Differential transcription of multiple copies of a silk worm gene encoding tRNA"1^G^l^y
    Amsterdam : Elsevier
    Gene 134 (1993), S. 183-190 
    Details
    ISSN: 0378-1119
    Keywords: Bombyx mori ; RNA polymerase III transcription ; gene family ; negative regulation ; positive regulation ; regulatory elements ; tissue specificity ; transcription factors ; transcription regulation
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Biology
    Type of Medium: Electronic Resource
    URL: http://linkinghub.elsevier.com/retrieve/pii/0378-1119(93)90092-H
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  • 5
    Electronic Resource
    Electronic Resource
    Determination of trace amounts of 5-methylcytosine in DNA by reverse-phase high-performance liquid chromatography
    Amsterdam : Elsevier
    Analytical Biochemistry 164 (1987), S. 164-169 
    Details
    ISSN: 0003-2697
    Keywords: 5-methylcytosine ; Bombyx mori ; Drosophila melanogaster ; HPLC techniques ; trace analysis
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Biology , Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1016/0003-2697(87)90381-2
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  • 6
    Electronic Resource
    Electronic Resource
    Micellar catalyzed redox reactions of bilirubin in CTAB medium. A pulse radiolysis study (1994)
    New York, NY : Wiley-Blackwell
    International Journal of Chemical Kinetics 26 (1994), S. 903-912 
    Details
    ISSN: 0538-8066
    Keywords: Chemistry ; Physical Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: The reaction of CO2·- with bilirubin which is not detectable in homogeneous aqueous medium proceeds almost with diffusion controlled rate in CTAB micellar system. This could be explained on the basis of catalysis caused by the possible electrostatic surface potential of cationic CTAB Micelles. The rate constant for the oxidation of bilirubin by haloperoxyl radicals have been shown to increase with increasing solvent polarity. Although the polarity effect was small, it followed a trend in the expected direction. Micellar effect was not observed in the oxidation reactions when alcohol was present in high concentration. But a small increase in the rate constant was observed when alcohol concentration was lower. © 1994 John Wiley & Sons, Inc.
    Additional Material: 4 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/kin.550260904
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  • 7
    Electronic Resource
    Electronic Resource
    Studies in mixed solvents: Comparison between solvated electron reactions and quenching of excited states (1995)
    New York, NY : Wiley-Blackwell
    International Journal of Chemical Kinetics 27 (1995), S. 535-545 
    Details
    ISSN: 0538-8066
    Keywords: Chemistry ; Physical Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: The rate constants for the reaction of electron pulse produced solvated electrons and a number of solutes in water-isopropanol mixtures have been measured. The quenching of the singlet excited state of naphthalene has also been studied in the same mixtures, using triethylamine and acrylamide as quenchers. The variation of the bimolecular solvated electron reaction rate constants with the composition of the solvent has been compared with the variation in the quenching constants with the composition of the solvent. Both these variations are surprisingly similar, with acrylamide behaving in a reverse manner (to the other solutes) in both the cases. It has been possible to quantitatively correlate both sets of data using dielectric constant (∊) as a measure of polarity and the viscosity (η) as an index of the microstructure. The curves obtained provide insights with respect to the nature of charge transfer processes involved. © 1995 John Wiley & Sons, Inc.
    Additional Material: 11 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/kin.550270603
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  • 8
    Electronic Resource
    Electronic Resource
    Reactions of halogenated organic peroxyl radicals with various purine derivatives, tyrosine, and thymine: A pulse radiolysis study (1992)
    New York, NY : Wiley-Blackwell
    International Journal of Chemical Kinetics 24 (1992), S. 1035-1042 
    Details
    ISSN: 0538-8066
    Keywords: Chemistry ; Physical Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Absolute rate constants for the one electron oxidation of guanine, guanosine, uric acid, xanthine, hypoxanthine, tyrosine, and thymine by various halogenated peroxyl radicals in aqueous solutions have been determined using the technique of pulse radiolysis. Roughly, linear correlations have been observed between the logarithm of these rate constants and Taft's inductive parameter (σ*) for the radicals. However, the rate constants for the radical CBr3O2· are slightly higher than those for CCl3O2· for most of these compounds. © John Wiley & Sons, Inc.
    Additional Material: 3 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/kin.550241202
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  • 9
    Electronic Resource
    Electronic Resource
    Reaction kinetics of hydrated electrons in a quaternary micro emulsion system: A pulse radiolysis study (1998)
    New York, NY : Wiley-Blackwell
    International Journal of Chemical Kinetics 30 (1998), S. 699-705 
    Details
    ISSN: 0538-8066
    Keywords: Chemistry ; Physical Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: The pulse-radiolysis technique has been employed to produce and study the kinetics of hydrated electrons (eaq-) in a quaternary micro emulsion (Sodium Lauryl Sulfate (NaLS)/water/cyclohexane/1-pentanol) system. Two orders of magnitude higher life time (20 μs) of the eaq- has been obtained as compared to that in reverse micelles reported earlier. Several probes including a biomolecule have been used to determine the water pool concentrations and quenching constants (kq). The observed yield and half life (t1/2) of the hydrated electrons vary smoothly as the water droplet sizes are changed. The bimolecular rate constants for the reaction of eaq- with different solutes have been determined. It has been observed that the measured bimolecular rate constants for the reaction of hydrated electrons with different solutes are indicative of the solubilization sites, the water core sizes, and the surrounding environment. © 1998 John Wiley & Sons, Inc. Int J Chem Kinet: 30: 699-705, 1998
    Additional Material: 3 Ill.
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  • 10
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    Suppression of antitumor immunity by stromal cells expressing fibroblast activation protein-alpha (2010)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2010-11-06
    Description: The stromal microenvironment of tumors, which is a mixture of hematopoietic and mesenchymal cells, suppresses immune control of tumor growth. A stromal cell type that was first identified in human cancers expresses fibroblast activation protein-alpha (FAP). We created a transgenic mouse in which FAP-expressing cells can be ablated. Depletion of FAP-expressing cells, which made up only 2% of all tumor cells in established Lewis lung carcinomas, caused rapid hypoxic necrosis of both cancer and stromal cells in immunogenic tumors by a process involving interferon-gamma and tumor necrosis factor-alpha. Depleting FAP-expressing cells in a subcutaneous model of pancreatic ductal adenocarcinoma also permitted immunological control of growth. Therefore, FAP-expressing cells are a nonredundant, immune-suppressive component of the tumor microenvironment.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Kraman, Matthew -- Bambrough, Paul J -- Arnold, James N -- Roberts, Edward W -- Magiera, Lukasz -- Jones, James O -- Gopinathan, Aarthi -- Tuveson, David A -- Fearon, Douglas T -- Cancer Research UK/United Kingdom -- Wellcome Trust/United Kingdom -- New York, N.Y. -- Science. 2010 Nov 5;330(6005):827-30. doi: 10.1126/science.1195300.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Wellcome Trust Immunology Unit, Department of Medicine, University of Cambridge, Medical Research Council Centre, Hills Road, Cambridge CB2 2QH, UK.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/21051638" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Antigens, Neoplasm/immunology ; Cancer Vaccines/administration & dosage/immunology ; Carcinoma, Lewis Lung/*immunology/pathology/therapy ; Carcinoma, Pancreatic Ductal/*immunology/pathology ; Cell Hypoxia ; Cell Line, Tumor ; Cell Survival ; Gelatinases/*metabolism ; *Immune Tolerance ; Interferon-gamma/immunology/metabolism ; Membrane Proteins/*metabolism ; Mice ; Mice, Transgenic ; Necrosis ; Neoplasm Transplantation ; Serine Endopeptidases/*metabolism ; Stromal Cells/*immunology/metabolism ; Tumor Microenvironment/*immunology ; Tumor Necrosis Factor-alpha/immunology/metabolism
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
    Published by American Association for the Advancement of Science (AAAS)
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