An effective approach for synthesis of 5-methyl-3-phenyl-6-(5-phenyl-1,3,4-oxadiazol-2-yl)thieno[2,3-d]pyrimidine-2,4(1H,3H)-dione by 1,1’-carbonyldiimidazole promoted interaction of 5-methyl-2,4-dioxo-3-phenyl-1,2,3,4-tetrahydrothieno[2,3-d]pyrimidine-6-carboxylic acid with benzohydrazide has been developed. The procedure also includes cyclization of N’-benzoyl-5-methyl-2,4-dioxo-3-phenyl-1,2,3,4-tetrahydrothieno[2,3-d]pyrimidine-6-carbohydrazide obtained by boiling in phosphorous oxychloride and further hydrolysis of the chlorine atom at position 2 of the thieno[2,3-d]pyrimidine system. Alkylation of the assembly of two heterocyclic units obtained with benzyl chlorides, chloroacetamides, and 5-(chloromethyl)-3-aryl-1,2,4-oxadiazoles has a...
The purpose of our work was developing the HPLC-MS method for determining piperidinium 2-((5-(furan-...
Aim. A targeted synthesis of the potential anti-inflammatory agents – 4-amino-5-(pyridin-2-yl)- and ...
The aim of this work is to study methods of 3-(2-N-(aryl,acyl)amino-5-methyl-1,3-thiazol-4-yl)-2H-ch...
The aim of the work. To synthesize some new pyrazole-substituted 7H-[1,2,4]triazolo [3,4-b][1,3,4] t...
By the reaction of 3-phenyl-6-(α-bromoacetyl)-5-methylthieno[2,3-d]pyrimidine-2,4(1H,3H)-dione with ...
By the reaction of 3-phenyl-6-(α-bromoacetyl)-5-methylthieno[2,3-d]pyrimidine-2,4(1H,3H)-dione with ...
3-Aryl-2-chloropropanals 2a-h have been prepared by the reaction of arenediazonium chlorides 1a-h wi...
The aim of study was to investigate diuretic activity of 1,2,4-triazole derivatives which contain С5...
Aim. Analysis of the scientific literature over the past decade has shown that large synthetic possi...
This article contains the results antimicrobial and antifungal activity 3-(alkylthio)-5-(thiophene-2...
It has been shown that the ternary condensation of oxaloacetic ester (diethyl 2-oxosuccinate), aroma...
The aim of the work. Synthesis of 3-[5-(5,7-dimethyl-2-oxo-thiazolo[4,5-b]pyridin-3-ylmethyl)-[1,3,4...
The peculiarities of the reaction between 3-(2-aminophenyl)-6-R-1,2,4-triazin-5(2H)-ones and cyclic ...
The effective method for the synthesis of ethyl 3-alkyl-5-methyl-4-oxo-2-thioxo-1,2,3,4-tetrahydroth...
The aim of the work. 1,2,4-triazole derivatives possess a wide range of pharmacological activity, so...
The purpose of our work was developing the HPLC-MS method for determining piperidinium 2-((5-(furan-...
Aim. A targeted synthesis of the potential anti-inflammatory agents – 4-amino-5-(pyridin-2-yl)- and ...
The aim of this work is to study methods of 3-(2-N-(aryl,acyl)amino-5-methyl-1,3-thiazol-4-yl)-2H-ch...
The aim of the work. To synthesize some new pyrazole-substituted 7H-[1,2,4]triazolo [3,4-b][1,3,4] t...
By the reaction of 3-phenyl-6-(α-bromoacetyl)-5-methylthieno[2,3-d]pyrimidine-2,4(1H,3H)-dione with ...
By the reaction of 3-phenyl-6-(α-bromoacetyl)-5-methylthieno[2,3-d]pyrimidine-2,4(1H,3H)-dione with ...
3-Aryl-2-chloropropanals 2a-h have been prepared by the reaction of arenediazonium chlorides 1a-h wi...
The aim of study was to investigate diuretic activity of 1,2,4-triazole derivatives which contain С5...
Aim. Analysis of the scientific literature over the past decade has shown that large synthetic possi...
This article contains the results antimicrobial and antifungal activity 3-(alkylthio)-5-(thiophene-2...
It has been shown that the ternary condensation of oxaloacetic ester (diethyl 2-oxosuccinate), aroma...
The aim of the work. Synthesis of 3-[5-(5,7-dimethyl-2-oxo-thiazolo[4,5-b]pyridin-3-ylmethyl)-[1,3,4...
The peculiarities of the reaction between 3-(2-aminophenyl)-6-R-1,2,4-triazin-5(2H)-ones and cyclic ...
The effective method for the synthesis of ethyl 3-alkyl-5-methyl-4-oxo-2-thioxo-1,2,3,4-tetrahydroth...
The aim of the work. 1,2,4-triazole derivatives possess a wide range of pharmacological activity, so...
The purpose of our work was developing the HPLC-MS method for determining piperidinium 2-((5-(furan-...
Aim. A targeted synthesis of the potential anti-inflammatory agents – 4-amino-5-(pyridin-2-yl)- and ...
The aim of this work is to study methods of 3-(2-N-(aryl,acyl)amino-5-methyl-1,3-thiazol-4-yl)-2H-ch...