Zobrazeno 1 - 10
of 18
pro vyhledávání: '"V. A. Tsyryapkin"'
Publikováno v:
Russian Chemical Bulletin. 43:595-598
The conditions for the Knoevenagel synthesis of 2-cyanoacrylates containing double and triple bonds in the alkoxycarbonyl group have been studied. It was found that the esters are formed in 10–70 % yields by the condensation of the respective cyano
Autor:
V. M. Belikov, M. B. Saporovskaya, S. O. Videnskaya, V. A. Tsyryapkin, Yu. N. Belokon, V. I. Maleev
Publikováno v:
ChemInform. 23
Publikováno v:
ChemInform. 26
Autor:
S. O. Videnskaya, V. M. Belikov, V. A. Tsyryapkin, Victor I. Maleev, Yu. N. Belokon, M. B. Saporovskaya
Publikováno v:
Bulletin of the Academy of Sciences of the USSR Division of Chemical Science. 40:110-118
A new class of catalysts of interfacial asymmetrical alkylation is suggested for the synthesis of α-amino acids — positively charged complexes of the transition metals Cu(II), Ni(II), and Pd(II). These complexes consist of several fragments, by va
Autor:
V A, Tsyryapkin, Belokon YuN, L V, Nedospasova, S O, Videnskaya, A G, Bulychev, V A, Shirokov, V I, Maleev, V M, Belikov
Publikováno v:
Biomedical science. 1(3)
The enantiomeric and diastereoisomeric analysis of nonproteinogenic methyl and hydroxy amino acids, obtained by asymmetric synthesis with the aid of a chiral regenerable reagent, has been carried out by liquid chromatography.
Publikováno v:
Russian Chemical Bulletin. 43:1090-1091
The authors have developed a general method for the direct addition of amino acids and dipeptides of various structures to fullerene C{sub 60}. In all cases the addition involves the amino group. The reaction proceeds when the solutions of fullerene
Autor:
M. V. Podol'skii, V. K. Lamov, V. A. Tsyryapkin, V. M. Belikov, L. N. Ermakova, S. V. Gordienko
Publikováno v:
Pharmaceutical Chemistry Journal. 14:884-887
At the present time, for this purpose acid or enzymatic hydrolysis is performed of proteins (for example, casein, lactalbumin, cattle blood) followed by purification and the elimination of the (I) from the hydrolysate [6, 7]. As a rule, acid hydrolys
Autor:
N. G. Faleev, Vladimir A. Maksakov, Yu. N. Belokon, V. M. Belikov, V. A. Tsyryapkin, Pavel V. Petrovskii
Publikováno v:
Bulletin of the Academy of Sciences of the USSR Division of Chemical Science. 26:813-817
Autor:
L. V. Vinogradova, Vladimir I. Bakhmutov, Yu. N. Belokon, V. M. Belikov, V. A. Tsyryapkin, L. V. Nedospasova
Publikováno v:
Bulletin of the Academy of Sciences of the USSR Division of Chemical Science. 26:2158-2161
1. The method of liquid chromatography has been used to study the stereoselective effects in complexes of salicylaldehyde and the copper ion with alanine di- and tripeptides. 2. With a dipeptide copper ion salicylaldehyde reactant ratio equal to 1∶
Autor:
V. A. Tsyryapkin, L. V. Nedospasova
Publikováno v:
Bulletin of the Academy of Sciences of the USSR Division of Chemical Science. 27:1787-1790
1. Complexes of Schiff bases with Cu(II) and Ni(II) ions can be successfully used for the Chromatographic separation of diastereomeric dipeptides. The retention time is greater for the Ni(II) chelates than for their Cu(II) analogs. 2. Replacement of