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Babushkina T. A. Klimova T. P. Sviridov B. D. Antonyuk A. V. 《Russian Journal of Coordination Chemistry》2002,28(1):71-74
d,l-Hexamethylpropyleneamino oxime (HMPAO) was synthesized and isolated from a mixture of d,l - and meso-isomers. The structure of the conformers was studied using 1H NMR spectroscopy over a broad range of pH. A method for estimating the amount of meso-form present in the mixture of isomers was proposed. It was shown that specific features of the IR spectra depend on the structure of the isomers and on the difference between the packing of molecules in the crystal lattice. 相似文献
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V. D. Sviridov N. D. Chkanikov A. F. Kolomiets A. V. Fokin 《Russian Chemical Bulletin》1991,40(4):847-849
Diphenylamine reacts with hexafluoroacetone to give a mixture of products, of which 2-(1-hydroxy-1-trifluoromethyl-2,2,2-trifluoroethyl)diphenylamine (II) was isolated. N-Arylanthranilic acids modify the 1,1,1,3,3,3-hexafluoro-2-hydroxy-2-propyl group upon the reaction of its sodium salt with the hydrate of hexafluoroacetone (I) under mild conditions. This method gave 4-(1-hydroxy-1-trifluoromethyl-2,2,3-trifluoroethyl)-N-(2,3-xylyl)anthranilic acid from N-(2,3-xylyl)anthranilic acid in 93% yield.Translated from Izvestiya Akademii Nauk SSSR, Seriya Khimicheskaya, No. 4, pp. 952–954, April, 1991. 相似文献
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S. I. Sviridov 《Chemistry of Natural Compounds》1991,27(4):410-413
A number of exometabolites have been isolated from the deuteromycetePyricularia oryzae Cav., of which harman and O-demethyldiaporthin have been isolated from this species for the first time. The latter is the
first example of a hexaketide from fungi of the genusPyricularia, for which only penta- and heptaketides have previously been described.
All-Union Scientific-Research Institute of Phytopathology, Moscow. Translated from Khimiya Prirodnykh Soedinenii, No. 4, pp.
471–475, July–August, 1991. 相似文献
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K. I. Mikhailopulo T. S. Serchenya E. P. Kiseleva Yu. G. Chernov T. M. Tsvetkova N. V. Kovganko O. V. Sviridov 《Journal of Applied Spectroscopy》2008,75(6):857-863
We have used fluorescence spectroscopy methods to show that imidacloprid and its structural analogs form complexes with human
serum albumin (HSA). The nature of the spectral changes in the ligand×protein systems and the calculated complexation parameters
suggest that these low molecular weight compounds mainly bind to a specific section of the protein molecule, near the tryptophan
residue in the 214 position of the polypeptide chain. We have found that the association constants are on the order of 104 M−1, and the affinity of the ligands for HSA varies in the series 6-chloronicotinic acid > 6-methoxynicotinic acid = imidacloprid
> the keto analog of imidacloprid. The major contribution to the complexation energy probably comes from hydrophobic interaction
forces with participation of the aromatic pyridine ring of the ligands, while additional enhancement of ligand-protein affinity
can be provided by the nitroimine group of imidacloprid.
Translated from Zhurnal Prikladnoi Spektroskopii, Vol. 75, No. 6, pp. 859–866, November–December, 2008. 相似文献
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A. V. Fokin V. I. Dyachenko V. D. Sviridov A. Yu. Sizov N. D. Chkanikov 《Russian Chemical Bulletin》1996,45(5):1178-1181
C-Hydroxy- andC-aminoalkylation of iminodibenzyl, iminostilbene, phenoxazine, and phenothiazine with hexafluoroacetone, methyl trifluoropyruvate, and their trifluoroacetylimines were investigated. The substitution occurred at one or severalpara- andortho-positions to the N atom of the heterocycles. In the case of methyl trifluoropyruvate and its derivative the substitution in theortho-position was accompanied by the formation of lactams.Translated fromIzvestiya Akademii Nauk. Seriya Khimicheskaya, No. 5, pp. 1239–1242, May, 1996. 相似文献
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