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101.
Dr. Dmitry S. Perekalin Dr. Valentin V. Novikov Alexander A. Pavlov Igor A. Ivanov Dr. Natalia Yu. Anisimova Alexey N. Kopylov Dr. Dmitry S. Volkov Dr. Irina F. Seregina Prof. Dr. Michail A. Bolshov Prof. Dr. Alexander R. Kudinov 《Chemistry (Weinheim an der Bergstrasse, Germany)》2015,21(13):4923-4925
Melittin is a membrane‐active peptide from bee venom with promising antimicrobial and anticancer activity. Herein we report on a simple and selective method for labeling of the tryptophan residue in melittin by the organometallic fragment [(C5H5)Ru]+ in aqueous solution and in air. Ruthenium coordination does not disturb the secondary structure of the peptide (as verified by 2D NMR spectroscopy), but changes the pattern of its intermolecular interactions resulting in an 11‐fold decrease of hemolytic activity. The high stability of the organometallic conjugate allowed the establishment of the biodistribution of the labeled melittin in mice by inductively coupled plasma MS analysis of ruthenium. 相似文献
102.
103.
Michail O. Danilov Gennady Ya. Kolbasov 《Journal of Solid State Electrochemistry》2010,14(12):2169-2172
An electrochemical method for the preparation of nanostructured composites based on multiwalled carbon nanotubes and chromium
oxide is proposed. The method involves electrodeposition of chromium oxides from a solution of hexavalent chromium oxide in
sulfuric acid on carbon nanotubes. By varying the electrolysis conditions one can obtain deposited—catalyst particles of different
size and vary the amount of catalyst. Oxygen electrodes have been made from the materials obtained for fuel cells with alkaline
electrolyte, which showed good electrocatalytic properties. 相似文献
104.
Validation of reducing-difference procedure based on subtracting of non-polarized infrared (IR) spectra of n-component solid mixtures is presented. The accuracy and precision are established. The limits of detection are 3.0, 2.5, 1.5 and 1.0 wt.% for 5-, 4-, 3-and 2-component mixtures, respectively. Smoothing procedures for IR spectral analysis, based on Savitzky-Golay or Fourier methods are applied as well. The mean values and relative standard deviations for peak position (νi) and integral absorbance (Ai) obtained by this data processing approach have been examined using Student's t-test. 相似文献
105.
Michail N. Elinson Sergey K. Feducovich Anatolii N. Vereshchagin 《Tetrahedron》2004,60(51):11743-11749
Electrolysis of arylidenemalononitriles and malononitrile in alcohols in an undivided cell in the presence of sodium bromide as mediator results in the stereoselective formation of (1R,2S,6R)*-6-aryl-2-amino-4,4-dialkoxy-1,5-dicyano-3-azabicyclo[3.1.0]hex-2-enes in 60-80% yields. 相似文献
106.
T. Ya. Medved' N. M. Dyatlova V. P. Markhaeva M. V. Rudomino N. V. Churilina Yu. M. Polikarpov M. I. Kabachnik 《Russian Chemical Bulletin》1976,25(5):992-997
1. | New organophosphorus complexing agents were synthesized: ethylenediamino-N,N'-diethylphosphonic, N,N-dimethylethylenediamino-N,N-dimethylphosphonic, and N,N-dimethylethylenediamino-N, N-diethylphosphonic acids and also the iodomethylate of the last acid. |
2. | The acid dissociation constants for these compounds and the stability constants for their complexes with nickel, copper, dysprosium, and uranyl ions were determined. |
107.
Michail N. Elinson Sergey K. Feducovich Anatolii N. Vereshchagin Gennady I. Nikishin 《Tetrahedron》2006,62(17):3989-3996
Electrolysis of malonate and alkylidenecyanoacetates in alcohols in an undivided cell in the presence of NaBr results in stereoselective formation of (E)-3-substituted 2-cyanocyclopropane-1,1,2-tricarboxylates in 75-90% yields. 相似文献
108.
Bojidarka B. Koleva Elena N. Trendafilova Michail G. Arnaudov William S. Sheldrick Heike Mayer-Figge 《Transition Metal Chemistry》2006,31(7):866-873
A new Cu(II)-complex of 3-aminopyridine, [CuCl(3-AP)4][Cu(3-AP)4(H2O)]Cl3 · 2H2O (1), containing two contrasting complex cations has been synthesized and structurally characterized by single crystal X-ray diffraction
and solid-state linear-dichroic infrared (IR-LD) spectral analysis. In both cations four 3-AP molecules coordinate the Cu(II)
atom in a monodentate fashion through their endocyclic (Npy) nitrogens, thereby generating a square-planar coordination geometry for the CuN4 chromophor. Perpendicular to the N4 plane, the metal ion is coordinated by a chloride anion in the first cation and a water ligand in the second cation. One
of three additional water molecules of crystallization occupies the vacant octahedral site of the second cation and participates
in a weak Cu···OH2 interaction. An IR-LD spectral analysis of the samples, oriented as a suspension in a nematic liquid crystal confirmed the
crystallographic data and the retention of the pyridine ring aromatic character after coordination. The presented results
are additionally supported by UV, 1H-NMR, EPR and MS analysis and by thermogravimetric and calorimetric data. 相似文献
109.
This paper establishes polyhedral properties of matroidal structures. Classical problems such as enumeration and classification
of polyhedra matroids, the characterization of face complexes, the metric properties of graphs of polymatroids are considered.
Supported by DAAD and Belarussian Fundamental Science Fund 相似文献
110.