


Vol 61, No 3 (2025)
ЭКСПЕРИМЕНТАЛЬНЫЕ СТАТЬИ
Synthesis and properties of 1,3-disubstituted ureas and its isostering analogs containing polycyclic fragments: XIX. Exo-isomers of 1-(1,7,7-trimethylbicyclo[2.2.1]heptan-2-yl)-3-R ureas and thioureas
Abstract
For a comprehensive assessment of the enantiomeric stereospecificity of human soluble epoxide hydrolase (hsEH), 1,3-disubstituted ureas and thioureas containing a bornyl fragment in their structure were synthesized according to the reaction exo-(R or S)-1,1,7-trimethylbicyclo[2.2.1]heptane-2-amine with aromatic isocyanates and isothiocyanates with yields up to 99%. Synthesized compounds are promising inhibitors of hsEH.



Formation of 1-(2,4,6-trifluorophenyl)perfluorobenzocyclobutene from perfluorobenzocyclobutene and 1,3,5-trifluorobenzene and its interaction with polyfluorobenzenes in an SBF5 medium
Abstract



1H-1,2,4-Triazolo-5-diazonium salts in the synthesis of new 6H-benzopyrano[4,3-e][1,2,4]triazolo[5,1-c]-[1,2,4]triazine-6-ones and [1,2,4]triazolo[5',1':3,4][1,2,4]-triazino[6,5-c]quinoline-6(7H)-ones
Abstract






Synthesis, antimicrobial and analgesic activity of 5-(Get)aryl-4-(trifluoromethyl)furan-2,3-diones recycling products under the action of aromatic amines
Abstract



SYNTHESIS OF POLYCARBOXYLIC DIAMANTHYLATED ARENES
Abstract



Synthesis of new derivatives of 18-membered macrocycles by cyclocondensation of pyrazole series hydrazine hydrazides
Abstract



Synthesis and transformations of O-propargyl analogues of fusidic acid
Abstract



SYNTHESIS, SYMPATHOLYTIC AND ADRENOLYTIC ACTIVITY OF AMINOAMIDES AND AMINОESTERS ON THE BASE OF 1-(BENZO[D][1,3]DIOXOL-5-YL)-CYCLOPENTANE- AND 4-(BENZO[D][1,3]DIOXOL-5-YL)TETRAHYDRO- 2H-PYRANE-4-CARBOXYLIC ACIDS
Abstract



SYNTHESIS OF QUINOLYL SUBSTITUTED THIAZOLIDINES AND DIHYDROTHIAZOLES BASED ON 2-{1-[2-METHYL-4-(METHYLTHIO)-QUINOLIN-3-YL]PROPAN-2-YLIDENE}HYDRAZINOCARBOTHIOAMIDES SUBSTITUTED IN THE BENZENE RING
Abstract



Synthesis of Hexa-Substituted Benzene Derivative Based on 4-Pyridinecarboxaldehyde and Malononitrile
Abstract



Conformational Preference of Oxybis(methylene-1,3-dioxane-5,5-diil)dimethanol in Solvents of Various Nature
Abstract
The conformational preference of oxybis(methylene-1,3-dioxane-5,5-diyl)dimethanol in various solvents was studied by NMR. According to the data of two-dimensional spectroscopy (NOESY), the bis(chair) form with diaxial oxymethyl groups is dominated in С6D6 and CDCl3, while the form with axial and equatorial oxymethyl groups at С5 and С5' atoms of the ring is dominated in DMSO-d6 and CD3CN solvents. The results of computer simulation of the conformational transformation of molecules of the studied diformal within the DFT approximation PBE/def2-SVP in these solvents (cluster model) are in complete agreement with the NMR results. It is shown that the optimal number of solvent molecules in the nearest solvate shell of the studied diformal varies from five to seven depending on the nature of solvent.



Cyclization of ethyl [cyano(4,6-dimethylpyrimidin-2-yl)amino]-acetate
Abstract



Spiroheterocyclization of 1-Antipyryl-4-aroyl-5-methoxycarbonyl-1h-pyrrole-2,3-diones under the Action of Dimedone
Abstract



КРАТКОЕ СООБЩЕНИЕ
REACTION OF 2-AMINOBENZOIMIDAZOLES WITH ACETYLENE IN THE KOBUT/DMSO SYSTEM: SELF-ORGANIZATION OF BENZO[D]-IMIDAZO[1,2-A]IMIDAZOLES AND BENZO[4,5]IMIDAZO[1,2-A]-PYRIMIDINES BY THE COMPETITION OF NUCLEOPHILIC CENTERS
Abstract
2-Aminobenzoimidazoles react with acetylene in the KOBut/DMSO superbase system (80°С, 20 min) to give benzoimidazo[1,2-a]imidazoles and benzoimidazo[1,2-a]pyrimidines, the products of self-organization of starting compounds with two or three molecules of acetylene. Moreover, vinyl derivatives of 1,3-dihydro-2H-benzo[d]imidazole-2-imine were obtained.



SYNTHESIS OF 2,6-BIS(1H-IMIDAZOLE-2-YL)-4-CHLOROPYRIDINE
Abstract



Method of regeneration of DMSO-d6
Abstract
A method for regenerating DMSO-d6 is proposed, based on the azeotropic distillation of water and volatile impurities with carbon tetrachloride and subsequent removal of impurities distilled from DMSO-d6 by complexation with copper ions.


