Zobrazeno 1 - 10
of 28
pro vyhledávání: '"S B, Goncharenko"'
Publikováno v:
Pharmaceutical Chemistry Journal. 26:769-772
Publikováno v:
Biulleten' eksperimental'noi biologii i meditsiny. 127(2)
Publikováno v:
Chemistry of Heterocyclic Compounds. 19:792-795
Methods for the synthesis of 6-arylamino-5,5-diethyl-3H,5H-pyrimidine-2,4-diones from the corresponding 6-thioxo and 6-amino derivatives were developed. The isomeric 2-arylamino-5,5-diethyl-1H,5H-pyrimidine-4,6-diones were obtained by the reaction of
Autor:
E. A. Usachev, V. G. Voronin, L. E. Pchelintseva, A. S. Zaks, Yu. N. Portnov, S. B. Goncharenko, Yu. M. Rabotnikov
Publikováno v:
Pharmaceutical Chemistry Journal. 20:259-264
Publikováno v:
Chemistry of Heterocyclic Compounds. 14:675-678
A mixture of isomers that differ with respect to the position of the methyl group is formed in the methylation of 5,5-diethyl-6-imino-5,6-dihydro[1H, 3H]pyrimidine-2,4-dione with excess methyl iodide in the presence of ethoxide. Isomerization of the
Publikováno v:
Chemistry of Heterocyclic Compounds. 12:443-448
The mass spectra of 2- and 4-thiobarbituric acids and some of their close analogs at ionizing voltages of 70 and 14 eV are compared. Qualitative and quantitative differences in the behavior of these compounds under the influence of electron impact we
Autor:
Yu. M. Rabotnikov, Yu. V. Portnov, S. B. Goncharenko, L. E. Pchelintseva, V. G. Voronin, E. A. Usachev, A. S. Zaks
Publikováno v:
Pharmaceutical Chemistry Journal. 20:332-335
Publikováno v:
Chemistry of Heterocyclic Compounds. 14:667-671
The mass spectra of 2- and 4-iminobarbituric acid derivatives were studied in relation to the mass spectra of their oxygen analogs. It is shown that the pathways of fragmentation of the investigated compounds depend on the type of substituent attache
Publikováno v:
Chemistry of Heterocyclic Compounds. 10:1102-1104
Under the influence of phosphorus oxychloride, 1-acylpyrazolines condense to give 3-pyrazolinylpyrazoles; cleavage of the pyrazoline molecule occurs at the C3-N2 bond.
Publikováno v:
Chemistry of Heterocyclic Compounds. 13:1137-1139
On the basis of data from the IR spectra of 4-thiobarbituric acid derivatives, and their deutero analogs, and similarly constructed model compounds, it was established that the investigated substances exist in the thione lactam form and form two type