7 research outputs found
Prediction of the Antiinflammatory Activity of New S-alkyl Derivatives of 1,2,4-triazol-3-thiones Using the PASS Computer Program and Molecular Docking
The strategy of rational approaches to the search for selective COX-2 inhibitors as potential antiinflammatory agents has been proposed and elaborated. It is based on the use of PASS-prediction and molecular docking. The choice of the basic structure of 4-amino-3-thio-1,2,4-triazole as a promising object of chemical modification has been substantiated. Using a modification of the primary molecule, a virtual library of S-derivatives of 5-substituted 4-amino(pyrrol)3-thio-4H-1,2,4-triazoles in the amount of 100 compounds (ten groups) has been obtained by introducing various pharmacophore fragments. Based on the analysis of the results of the PASS-prediction and molecular docking, six of the ten planned groups of compounds have been selected for the synthesis as promising selective COX-2 inhibitors. The reliability of the prediction results has already been confirmed for one of the promising group 4-amino-5-(pyridine-4-yl)-1,2,4-triazole (4Π)-3-yl-thioacetamides
Π ΠΎΠ·ΡΠΎΠ±ΠΊΠ° ΠΌΠ΅ΡΠΎΠ΄ΡΠ² ΠΊΠΎΠ½ΡΡΠΎΠ»Ρ ΡΠΊΠΎΡΡΡ ΠΏΠ΅ΡΡΠΏΠ΅ΠΊΡΠΈΠ²Π½ΠΎΠ³ΠΎ Π°Π½ΡΠΈΠΊΠΎΠ½Π²ΡΠ»ΡΡΠ°Π½ΡΠ°
In the previous studies, NUPh scientists proved that the search of potential anticonvulsants among derivatives of 1,3,4-thiadiazole is very perspective [1-3]. At the medicinal chemistry department of NUPh N-(5-ethyl-[1,3,4]-thiadiazole-2-yl)-2-nitrobenzamide was synthesized. This substance demonstrated high anticonvulsive activity on pentylentetrazole model of seizure compared to classic drug Β«DepakinΒ». The substance is patented and proposed for further preclinical studies. One of the most important stages in the introduction of a new medicinal product or substance into medical practice is the development of quality control techniques.The aim. The aim of this work was to develop methods of identification, determination of impurities and quantitative determination of N- (5-ethyl- [1,3,4] -thiadiazole-2-yl)-2-nitrobenzamide for further application in standardization of the substance.Methods. Chromatographically pure sample of N- (5-ethyl- [1,3,4] -thiadiazole-2-yl) -2-nitrobenzamide, methods of IR, UV and 1H NMR spectroscopy.Results. The physical-chemical properties and spectral characteristics of N-(5-ethyl-[1,3,4]-thiadiazole-2-yl)-2-nitrobenzamide were studied, and chemical identification methods were proposed. The optimal conditions for the determination of the impurities by the method of thin-layer chromatography using the method of internal normalization are selected. The assay for N- (5-ethyl- [1,3,4] -thiadiazol-2-yl) -2-nitrobenzamide was carried out by absorption spectrophotometry in the alcohol solution at the wavelength of 282 nm with the absorption index 631. For application of methods such validation characteristics as robustness, linearity, correctness, stability of analytical solutions, precision, convergence, reproducibility, calculation of uncertainty of samples preparation were studied.Conclusions. The methods of identification of N- (5-ethyl- [1,3,4] -thiadiazol-2-yl) -2-nitrobenzamide with the use of chemical reactions and spectral methods of analysis - IR and UV and 1H NMR spectroscopy have been developed. To determine the concomitant impurities in the substance, the TLC method is recommended. Specific and nonspecific impurities were determined. The method of quantitative determination of substance by absorption spectrophotometry method in the ultraviolet region by the method of specific absorption index have been developedΠΡΠ΅Π΄ΡΠ΄ΡΡΠΈΠΌΠΈ ΠΈΡΡΠ»Π΅Π΄ΠΎΠ²Π°Π½ΠΈΡΠΌΠΈ ΡΡΠ΅Π½ΡΡ
ΠΠ€ΠΠ£ Π΄ΠΎΠΊΠ°Π·Π°Π½Π° ΠΏΠ΅ΡΡΠΏΠ΅ΠΊΡΠΈΠ²Π½ΠΎΡΡΡ ΠΏΠΎΠΈΡΠΊΠ° ΠΏΠΎΡΠ΅Π½ΡΠΈΠ°Π»ΡΠ½ΡΡ
ΠΏΡΠΎΡΠΈΠ²ΠΎΡΡΠ΄ΠΎΡΠΎΠΆΠ½ΡΡ
ΡΡΠ΅Π΄ΡΡΠ² Π² ΡΡΠ΄Ρ ΠΏΡΠΎΠΈΠ·Π²ΠΎΠ΄Π½ΡΡ
1,3,4-ΡΠΈΠ°Π΄ΠΈΠ°Π·ΠΎΠ»Π° [1-3]. ΠΠ° ΠΊΠ°ΡΠ΅Π΄ΡΠ΅ ΠΌΠ΅Π΄ΠΈΡΠΈΠ½ΡΠΊΠΎΠΉ Ρ
ΠΈΠΌΠΈΠΈ ΠΠ€Π°Π£ ΡΠΈΠ½ΡΠ΅Π·ΠΈΡΠΎΠ²Π°Π½Π° ΡΡΠ±ΡΡΠ°Π½ΡΠΈΡ N- (5-ΡΡΠΈΠ» [1,3,4] -ΡΠΈΠ°Π΄ΠΈΠ°Π·ΠΎΠ»-2-ΠΈΠ») -2-Π½ΠΈΡΡΠΎΠ±Π΅Π½Π·Π°ΠΌΠΈΠ΄, ΠΊΠΎΡΠΎΡΠ°Ρ Π² ΡΡΠ»ΠΎΠ²ΠΈΡΡ
ΡΠΊΡΠΏΠ΅ΡΠΈΠΌΠ΅Π½ΡΠ° ΠΏΠΎΠΊΠ°Π·Π°Π»Π° Π²ΡΡΠΎΠΊΡΡ ΠΏΡΠΎΡΠΈΠ²ΠΎΡΡΠ΄ΠΎΡΠΎΠΆΠ½ΡΡ Π°ΠΊΡΠΈΠ²Π½ΠΎΡΡΡ Π½Π° ΠΊΠΎΡΠ°Π·ΠΎΠ»ΠΎΠ²ΠΎΠΉ ΠΌΠΎΠ΄Π΅Π»ΠΈ ΡΡΠ΄ΠΎΡΠΎΠ³ ΠΏΠΎ ΡΡΠ°Π²Π½Π΅Π½ΠΈΡ Ρ ΠΊΠ»Π°ΡΡΠΈΡΠ΅ΡΠΊΠΈΠΌ Π°Π½ΡΠΈΠΊΠΎΠ½Π²ΡΠ»ΡΡΠ°Π½ΡΠΎΠΌ - Β«ΠΠ΅ΠΏΠ°ΠΊΠΈΠ½ΠΎΠΌΒ». Π‘ΠΎΠ΅Π΄ΠΈΠ½Π΅Π½ΠΈΠ΅ Π·Π°ΠΏΠ°ΡΠ΅Π½ΡΠΎΠ²Π°Π½ΠΎ ΠΈ ΠΏΡΠ΅Π΄Π»ΠΎΠΆΠ΅Π½ΠΎ Π΄Π»Ρ Π΄Π°Π»ΡΠ½Π΅ΠΉΡΠΈΡ
Π΄ΠΎΠΊΠ»ΠΈΠ½ΠΈΡΠ΅ΡΠΊΠΈΡ
ΠΈΡΡΠ»Π΅Π΄ΠΎΠ²Π°Π½ΠΈΠΉ. ΠΠ΄Π½ΠΈΠΌ ΠΈΠ· Π²Π°ΠΆΠ½Π΅ΠΉΡΠΈΡ
ΡΡΠ°ΠΏΠΎΠ² Π²Π½Π΅Π΄ΡΠ΅Π½ΠΈΡ Π½ΠΎΠ²ΠΎΠ³ΠΎ Π»Π΅ΠΊΠ°ΡΡΡΠ²Π΅Π½Π½ΠΎΠ³ΠΎ ΡΡΠ΅Π΄ΡΡΠ²Π° ΠΈΠ»ΠΈ ΡΡΠ±ΡΡΠ°Π½ΡΠΈΠΈ Π² ΠΌΠ΅Π΄ΠΈΡΠΈΠ½ΡΠΊΡΡ ΠΏΡΠ°ΠΊΡΠΈΠΊΡ ΡΠ²Π»ΡΠ΅ΡΡΡ ΡΠ°Π·ΡΠ°Π±ΠΎΡΠΊΠ° ΠΌΠ΅ΡΠΎΠ΄ΠΈΠΊ ΠΊΠΎΠ½ΡΡΠΎΠ»Ρ ΠΊΠ°ΡΠ΅ΡΡΠ²Π°.Π¦Π΅Π»Ρ. Π¦Π΅Π»ΡΡ Π΄Π°Π½Π½ΠΎΠΉ ΡΠ°Π±ΠΎΡΡ Π±ΡΠ»Π° ΡΠ°Π·ΡΠ°Π±ΠΎΡΠΊΠ° ΠΌΠ΅ΡΠΎΠ΄ΠΈΠΊ ΠΈΠ΄Π΅Π½ΡΠΈΡΠΈΠΊΠ°ΡΠΈΠΈ, ΠΎΠΏΡΠ΅Π΄Π΅Π»Π΅Π½ΠΈΡ ΠΏΡΠΈΠΌΠ΅ΡΠ΅ΠΉ ΠΈ ΠΊΠΎΠ»ΠΈΡΠ΅ΡΡΠ²Π΅Π½Π½ΠΎΠ³ΠΎ ΠΎΠΏΡΠ΅Π΄Π΅Π»Π΅Π½ΠΈΡ N- (5-ΡΡΠΈΠ» [1,3,4] -ΡΠΈΠ°Π΄ΠΈΠ°Π·ΠΎΠ»-2-ΠΈΠ») -2-Π½ΠΈΡΡΠΎΠ±Π΅Π½Π·Π°ΠΌΠΈΠ΄Π° Ρ ΡΠ΅Π»ΡΡ Π΄Π°Π»ΡΠ½Π΅ΠΉΡΠ΅Π³ΠΎ ΠΏΡΠΈΠΌΠ΅Π½Π΅Π½ΠΈΡ Π² ΡΡΠ°Π½Π΄Π°ΡΡΠΈΠ·Π°ΡΠΈΠΈ ΡΡΠ±ΡΡΠ°Π½ΡΠΈΠΈ.ΠΠ΅ΡΠΎΠ΄Ρ. Π₯ΡΠΎΠΌΠ°ΡΠΎΠ³ΡΠ°ΡΠΈΡΠ΅ΡΠΊΠΈ ΡΠΈΡΡΡΠΉ ΠΎΠ±ΡΠ°Π·Π΅Ρ N- (5-ΡΡΠΈΠ» [1,3,4] -ΡΠΈΠ°Π΄ΠΈΠ°Π·ΠΎΠ»-2-ΠΈΠ») -2-Π½ΠΈΡΡΠΎΠ±Π΅Π½Π·Π°ΠΌΠΈΠ΄Π°, ΠΌΠ΅ΡΠΎΠ΄Ρ ΠΠ-, Π£Π€- ΠΈ 1Π Π―ΠΠ ΡΠΏΠ΅ΠΊΡΡΠΎΡΠΊΠΎΠΏΠΈΠΈ.Π Π΅Π·ΡΠ»ΡΡΠ°ΡΡ. ΠΠ·ΡΡΠ΅Π½Ρ ΡΠΈΠ·ΠΈΠΊΠΎ-Ρ
ΠΈΠΌΠΈΡΠ΅ΡΠΊΠΈΠ΅ ΡΠ²ΠΎΠΉΡΡΠ²Π° ΠΈ ΡΠΏΠ΅ΠΊΡΡΠ°Π»ΡΠ½ΡΠ΅ Ρ
Π°ΡΠ°ΠΊΡΠ΅ΡΠΈΡΡΠΈΠΊΠΈ N- (5-ΡΡΠΈΠ» [1,3,4] -ΡΠΈΠ°Π΄ΠΈΠ°Π·ΠΎΠ»-2-ΠΈΠ») -2-Π½ΠΈΡΡΠΎΠ±Π΅Π½Π·Π°ΠΌΠΈΠ΄Π°, ΠΏΡΠ΅Π΄Π»ΠΎΠΆΠ΅Π½Ρ Ρ
ΠΈΠΌΠΈΡΠ΅ΡΠΊΠΈΠ΅ ΠΌΠ΅ΡΠΎΠ΄Ρ ΠΈΠ΄Π΅Π½ΡΠΈΡΠΈΠΊΠ°ΡΠΈΠΈ. ΠΠΎΠ΄ΠΎΠ±ΡΠ°Π½Ρ ΠΎΠΏΡΠΈΠΌΠ°Π»ΡΠ½ΡΠ΅ ΡΡΠ»ΠΎΠ²ΠΈΡ ΠΎΠΏΡΠ΅Π΄Π΅Π»Π΅Π½ΠΈΡ ΡΠΎΠΏΡΡΡΡΠ²ΡΡΡΠΈΡ
ΠΏΡΠΈΠΌΠ΅ΡΠ΅ΠΉ ΠΌΠ΅ΡΠΎΠ΄ΠΎΠΌ ΡΠΎΠ½ΠΊΠΎΡΠ»ΠΎΠΉΠ½ΠΎΠΉ Ρ
ΡΠΎΠΌΠ°ΡΠΎΠ³ΡΠ°ΡΠΈΠΈ Ρ ΠΈΡΠΏΠΎΠ»ΡΠ·ΠΎΠ²Π°Π½ΠΈΠ΅ΠΌ ΠΌΠ΅ΡΠΎΠ΄Π° Π²Π½ΡΡΡΠ΅Π½Π½Π΅ΠΉ Π½ΠΎΡΠΌΠ°Π»ΠΈΠ·Π°ΡΠΈΠΈ. ΠΠ½Π°Π»ΠΈΠ· N- (5-ΡΡΠΈΠ»- [1,3,4] -ΡΠΈΠ°Π΄ΠΈΠ°Π·ΠΎΠ»-2-ΠΈΠ») -2-Π½ΠΈΡΡΠΎΠ±Π΅Π½Π·Π°ΠΌΠΈΠ΄Π° ΠΏΡΠΎΠ²ΠΎΠ΄ΠΈΠ»ΠΈ ΠΌΠ΅ΡΠΎΠ΄ΠΎΠΌ Π°Π±ΡΠΎΡΠ±ΡΠΈΠΎΠ½Π½ΠΎΠΉ ΡΠΏΠ΅ΠΊΡΡΠΎΡΠΎΡΠΎΠΌΠ΅ΡΡΠΈΠΈ Π² ΡΡΠ°Π½ΠΎΠ»ΡΠ½ΠΎΠΌ ΡΠ°ΡΡΠ²ΠΎΡΠ΅ ΠΏΡΠΈ Π΄Π»ΠΈΠ½Π΅ Π²ΠΎΠ»Π½Ρ 282 Π½ΠΌ Ρ ΠΏΠΎΠΊΠ°Π·Π°ΡΠ΅Π»Π΅ΠΌ ΠΏΠΎΠ³Π»ΠΎΡΠ΅Π½ΠΈΡ 631. ΠΠ»Ρ ΠΏΡΠΈΠΌΠ΅Π½Π΅Π½ΠΈΡ ΠΌΠ΅ΡΠΎΠ΄Π° Π±ΡΠ»ΠΈ ΠΈΠ·ΡΡΠ΅Π½Ρ ΡΠ°ΠΊΠΈΠ΅ Π²Π°Π»ΠΈΠ΄Π°ΡΠΈΠΎΠ½Π½ΡΠ΅ Ρ
Π°ΡΠ°ΠΊΡΠ΅ΡΠΈΡΡΠΈΠΊΠΈ, ΠΊΠ°ΠΊ ΡΡΡΠΎΠΉΡΠΈΠ²ΠΎΡΡΡ, Π»ΠΈΠ½Π΅ΠΉΠ½ΠΎΡΡΡ, ΠΊΠΎΡΡΠ΅ΠΊΡΠ½ΠΎΡΡΡ, ΡΡΠ°Π±ΠΈΠ»ΡΠ½ΠΎΡΡΡ Π°Π½Π°Π»ΠΈΡΠΈΡΠ΅ΡΠΊΠΈΡ
ΡΠ΅ΡΠ΅Π½ΠΈΠΉ, ΡΠΎΡΠ½ΠΎΡΡΡ, ΡΡ
ΠΎΠ΄ΠΈΠΌΠΎΡΡΡ, Π²ΠΎΡΠΏΡΠΎΠΈΠ·Π²ΠΎΠ΄ΠΈΠΌΠΎΡΡΡ, ΡΠ°ΡΡΠ΅Ρ Π½Π΅ΠΎΠΏΡΠ΅Π΄Π΅Π»Π΅Π½Π½ΠΎΡΡΠΈ ΠΏΠΎΠ΄Π³ΠΎΡΠΎΠ²ΠΊΠΈ ΠΎΠ±ΡΠ°Π·ΡΠΎΠ².ΠΡΠ²ΠΎΠ΄Ρ. Π Π°Π·ΡΠ°Π±ΠΎΡΠ°Π½Ρ ΠΌΠ΅ΡΠΎΠ΄Ρ ΠΈΠ΄Π΅Π½ΡΠΈΡΠΈΠΊΠ°ΡΠΈΠΈ N- (5-Π΅ΡΠΈΠ»- [1,3,4] -ΡΠΈΠ°Π΄ΠΈΠ°Π·ΠΎΠ»-2-ΠΈΠ») -2-Π½ΠΈΡΡΠΎΠ±Π΅Π½Π·Π°ΠΌΠΈΠ΄Π° Ρ ΠΈΡΠΏΠΎΠ»ΡΠ·ΠΎΠ²Π°Π½ΠΈΠ΅ΠΌ Ρ
ΠΈΠΌΠΈΡΠ΅ΡΠΊΠΈΡ
ΡΠ΅Π°ΠΊΡΠΈΠΉ ΠΈ ΡΠΏΠ΅ΠΊΡΡΠ°Π»ΡΠ½ΡΡ
ΠΌΠ΅ΡΠΎΠ΄ΠΎΠ² Π°Π½Π°Π»ΠΈΠ·Π° - ΠΠ ΠΈ Π£Π€ ΠΈ 1Π Π―ΠΠ -ΡΠΏΠ΅ΠΊΡΡΠΎΡΠΊΠΎΠΏΠΈΠΈ. ΠΠ»Ρ ΠΎΠΏΡΠ΅Π΄Π΅Π»Π΅Π½ΠΈΡ ΡΠΎΠΏΡΡΡΡΠ²ΡΡΡΠΈΡ
ΠΏΡΠΈΠΌΠ΅ΡΠ΅ΠΉ Π² ΡΡΠ±ΡΡΠ°Π½ΡΠΈΠΈ ΡΠ΅ΠΊΠΎΠΌΠ΅Π½Π΄ΠΎΠ²Π°Π½ ΠΌΠ΅ΡΠΎΠ΄ Π’Π‘Π₯. ΠΠΏΡΠ΅Π΄Π΅Π»Π΅Π½Ρ ΡΠ΅Π³Π»Π°ΠΌΠ΅Π½ΡΠΈΡΠΎΠ²Π°Π½Π½ΡΠ΅ ΡΠΏΠ΅ΡΠΈΡΠΈΡΠ΅ΡΠΊΠΈΠ΅ ΠΈ Π½Π΅ΡΠΏΠ΅ΡΠΈΡΠΈΡΠ΅ΡΠΊΠΈΠ΅ ΠΏΡΠΈΠΌΠ΅ΡΠΈ. Π Π°Π·ΡΠ°Π±ΠΎΡΠ°Π½Π° ΠΌΠ΅ΡΠΎΠ΄ΠΈΠΊΠ° ΠΊΠΎΠ»ΠΈΡΠ΅ΡΡΠ²Π΅Π½Π½ΠΎΠ³ΠΎ ΠΎΠΏΡΠ΅Π΄Π΅Π»Π΅Π½ΠΈΡ ΡΡΠ±ΡΡΠ°Π½ΡΠΈΠΈ ΠΌΠ΅ΡΠΎΠ΄ΠΎΠΌ Π°Π±ΡΠΎΡΠ±ΡΠΈΠΎΠ½Π½ΠΎΠΉ ΡΠΏΠ΅ΠΊΡΡΠΎΡΠΎΡΠΎΠΌΠ΅ΡΡΠΈΠΈ Π² ΡΠ»ΡΡΡΠ°ΡΠΈΠΎΠ»Π΅ΡΠΎΠ²ΠΎΠΉ ΠΎΠ±Π»Π°ΡΡΠΈ ΠΌΠ΅ΡΠΎΠ΄ΠΎΠΌ ΡΠ΄Π΅Π»ΡΠ½ΠΎΠ³ΠΎ ΠΏΠΎΠΊΠ°Π·Π°ΡΠ΅Π»Ρ ΠΏΠΎΠ³Π»ΠΎΡΠ΅Π½ΠΈΡΠΠΎΠΏΠ΅ΡΠ΅Π΄Π½ΡΠΌΠΈ Π΄ΠΎΡΠ»ΡΠ΄ΠΆΠ΅Π½Π½ΡΠΌΠΈ Π²ΡΠ΅Π½ΠΈΡ
ΠΠ€ΠΠ£ Π΄ΠΎΠ²Π΅Π΄Π΅Π½Π° ΠΏΠ΅ΡΡΠΏΠ΅ΠΊΡΠΈΠ²Π½ΡΡΡΡ ΠΏΠΎΡΡΠΊΡ ΠΏΠΎΡΠ΅Π½ΡΡΠΉΠ½ΠΈΡ
Π°Π½ΡΠΈΠΊΠΎΠ½Π²ΡΠ»ΡΡΠ°Π½ΡΡΠ² Π² ΡΡΠ΄Ρ ΠΏΠΎΡ
ΡΠ΄Π½ΠΈΡ
1,3,4-ΡΡΠ°Π΄ΡΠ°Π·ΠΎΠ»Ρ[1-3]. ΠΠ° ΠΊΠ°ΡΠ΅Π΄ΡΡ ΠΌΠ΅Π΄ΠΈΡΠ½ΠΎΡ Ρ
ΡΠΌΡΡ ΠΠ€Π°Π£ ΡΠΈΠ½ΡΠ΅Π·ΠΎΠ²Π°Π½Π° ΡΠΏΠΎΠ»ΡΠΊΠ° N-(5-Π΅ΡΠΈΠ»-[1,3,4]-ΡΡΠ°Π΄ΡΠ°Π·ΠΎΠ»-2-ΡΠ»)-2-Π½ΡΡΡΠΎΠ±Π΅Π½Π·Π°ΠΌΡΠ΄, ΡΠΊΠ° Π² ΡΠΌΠΎΠ²Π°Ρ
Π΅ΠΊΡΠΏΠ΅ΡΠΈΠΌΠ΅Π½ΡΡ ΠΏΠΎΠΊΠ°Π·Π°Π»Π°Β Π²ΠΈΡΠΎΠΊΡ ΠΏΡΠΎΡΠΈΡΡΠ΄ΠΎΠΌΠ½Ρ Π°ΠΊΡΠΈΠ²Π½ΡΡΡΡ Π½Π° ΠΊΠΎΡΠ°Π·ΠΎΠ»ΠΎΠ²ΡΠΉ ΠΌΠΎΠ΄Π΅Π»Ρ ΡΡΠ΄ΠΎΠΌ Ρ ΠΏΠΎΡΡΠ²Π½ΡΠ½Π½Ρ Π· ΠΊΠ»Π°ΡΠΈΡΠ½ΠΈΠΌ Π°Π½ΡΠΈΠΊΠΎΠ½Π²ΡΠ»ΡΡΠ°Π½ΡΠΎΠΌ β Β«ΠΠ΅ΠΏΠ°ΠΊΡΠ½ΠΎΠΌΒ». Π‘ΠΏΠΎΠ»ΡΠΊΠ° Π·Π°ΠΏΠ°ΡΠ΅Π½ΡΠΎΠ²Π°Π½Π° ΡΠ° Π·Π°ΠΏΡΠΎΠΏΠΎΠ½ΠΎΠ²Π°Π½Π° Π΄Π»Ρ ΠΏΠΎΠ΄Π°Π»ΡΡΠΈΡ
Π΄ΠΎΠΊΠ»ΡΠ½ΡΡΠ½ΠΈΡ
Π΄ΠΎΡΠ»ΡΠ΄ΠΆΠ΅Π½Ρ. ΠΠ΄Π½ΠΈΠΌ Π· Π½Π°ΠΉΠ²Π°ΠΆΠ»ΠΈΠ²ΡΡΠΈΡ
Π΅ΡΠ°ΠΏΡΠ² Π²ΠΏΡΠΎΠ²Π°Π΄ΠΆΠ΅Π½Π½Ρ Π½ΠΎΠ²ΠΎΠ³ΠΎ Π»ΡΠΊΠ°ΡΡΡΠΊΠΎΠ³ΠΎ Π·Π°ΡΠΎΠ±Ρ Π°Π±ΠΎ ΡΡΠ±ΡΡΠ°Π½ΡΡΡ Π² ΠΌΠ΅Π΄ΠΈΡΠ½Ρ ΠΏΡΠ°ΠΊΡΠΈΠΊΡ Ρ ΡΠΎΠ·ΡΠΎΠ±ΠΊΠ° ΠΌΠ΅ΡΠΎΠ΄ΠΈΠΊ ΠΊΠΎΠ½ΡΡΠΎΠ»Ρ ΡΠΊΠΎΡΡΡ.ΠΠ΅ΡΠ°.Β ΠΠ΅ΡΠΎΡΒ Π΄Π°Π½ΠΎΡΒ ΡΠΎΠ±ΠΎΡΠΈΒ Π±ΡΠ»Π° ΡΠΎΠ·ΡΠΎΠ±ΠΊΠ° ΠΌΠ΅ΡΠΎΠ΄ΠΈΠΊ ΡΠ΄Π΅Π½ΡΠΈΡΡΠΊΠ°ΡΡΡ, Π²ΠΈΠ·Π½Π°ΡΠ΅Π½Π½Ρ Π΄ΠΎΠΌΡΡΠΎΠΊ ΡΠ° ΠΊΡΠ»ΡΠΊΡΡΠ½ΠΎΠ³ΠΎ Π²ΠΈΠ·Π½Π°ΡΠ΅Π½Π½Ρ N-(5-Π΅ΡΠΈΠ»-[1,3,4]-ΡΡΠ°Π΄ΡΠ°Π·ΠΎΠ»-2-ΡΠ»)-2-Π½ΡΡΡΠΎΠ±Π΅Π½Π·Π°ΠΌΡΠ΄Ρ Π· ΠΌΠ΅ΡΠΎΡ ΠΏΠΎΠ΄Π°Π»ΡΡΠΎΠ³ΠΎ Π·Π°ΡΡΠΎΡΡΠ²Π°Π½Π½Ρ Π² ΡΡΠ°Π½Π΄Π°ΡΡΠΈΠ·Π°ΡΡΡ ΡΡΠ±ΡΡΠ°Π½ΡΡΡ.ΠΠ΅ΡΠΎΠ΄ΠΈ. Π₯ΡΠΎΠΌΠ°ΡΠΎΠ³ΡΠ°ΡΡΡΠ½ΠΎ ΡΠΈΡΡΠΈΠΉ Π·ΡΠ°Π·ΠΎΠΊ N-(5-Π΅ΡΠΈΠ»-[1,3,4]-ΡΡΠ°Π΄ΡΠ°Π·ΠΎΠ»-2-ΡΠ»)-2-Π½ΡΡΡΠΎΠ±Π΅Π½Π·Π°ΠΌΡΠ΄Ρ, ΠΌΠ΅ΡΠΎΠ΄ΠΈ ΠΠ§-, Π£Π€- ΡΠ° 1Π Π―ΠΠ ΡΠΏΠ΅ΠΊΡΡΠΎΡΠΊΠΎΠΏΡΡ.Π Π΅Π·ΡΠ»ΡΡΠ°ΡΠΈ. ΠΠΈΠ²ΡΠ΅Π½ΠΎ ΡΡΠ·ΠΈΠΊΠΎ-Ρ
ΡΠΌΡΡΠ½Ρ Π²Π»Π°ΡΡΠΈΠ²ΠΎΡΡΡ Ρ ΡΠΏΠ΅ΠΊΡΡΠ°Π»ΡΠ½Ρ Ρ
Π°ΡΠ°ΠΊΡΠ΅ΡΠΈΡΡΠΈΠΊΠΈ N-(5-Π΅ΡΠΈΠ»-[1,3,4]-ΡΡΠ°Π΄ΡΠ°Π·ΠΎΠ»-2-ΡΠ»)-2-Π½ΡΡΡΠΎΠ±Π΅Π½Π·Π°ΠΌΡΠ΄Ρ, Π·Π°ΠΏΡΠΎΠΏΠΎΠ½ΠΎΠ²Π°Π½ΠΎ Ρ
ΡΠΌΡΡΠ½Ρ ΠΌΠ΅ΡΠΎΠ΄ΠΈ ΡΠ΄Π΅Π½ΡΠΈΡΡΠΊΠ°ΡΡΡ. ΠΡΠ΄ΡΠ±ΡΠ°Π½ΠΎ ΠΎΠΏΡΠΈΠΌΠ°Π»ΡΠ½Ρ ΡΠΌΠΎΠ²ΠΈ Π²ΠΈΠ·Π½Π°ΡΠ΅Π½Π½Ρ ΡΡΠΏΡΡΠ½ΡΡ
Π΄ΠΎΠΌΡΡΠΎΠΊ ΠΌΠ΅ΡΠΎΠ΄ΠΎΠΌ ΡΠΎΠ½ΠΊΠΎΡΠ°ΡΠΎΠ²ΠΎΡ Ρ
ΡΠΎΠΌΠ°ΡΠΎΠ³ΡΠ°ΡΡΡ Π· Π²ΠΈΠΊΠΎΡΠΈΡΡΠ°Π½Π½ΡΠΌ ΠΌΠ΅ΡΠΎΠ΄Ρ Π²Π½ΡΡΡΡΡΠ½ΡΠΎΡ Π½ΠΎΡΠΌΠ°Π»ΡΠ·Π°ΡΡΡ. ΠΠ½Π°Π»ΡΠ· N- (5-Π΅ΡΠΈΠ»-[1,3,4] -ΡΡΠ°Π΄ΡΠ°Π·ΠΎΠ»-2-ΡΠ») -2-Π½ΡΡΡΠΎΠ±Π΅Π½Π·Π°ΠΌΡΠ΄Π° ΠΏΡΠΎΠ²ΠΎΠ΄ΠΈΠ»ΠΈ ΠΌΠ΅ΡΠΎΠ΄ΠΎΠΌ Π°Π±ΡΠΎΡΠ±ΡΡΠΉΠ½ΠΎΡ ΡΠΏΠ΅ΠΊΡΡΠΎΡΠΎΡΠΎΠΌΠ΅ΡΡΡΡ Π² Π΅ΡΠ°Π½ΠΎΠ»ΡΠ½ΠΎΠΌΡ ΡΠΎΠ·ΡΠΈΠ½Ρ ΠΏΡΠΈ Π΄ΠΎΠ²ΠΆΠΈΠ½Ρ Ρ
Π²ΠΈΠ»Ρ 282 Π½ΠΌ Π· ΠΏΠΎΠΊΠ°Π·Π½ΠΈΠΊΠΎΠΌ ΠΏΠΎΠ³Π»ΠΈΠ½Π°Π½Π½Ρ 631. ΠΠ»Ρ Π·Π°ΡΡΠΎΡΡΠ²Π°Π½Π½Ρ ΠΌΠ΅ΡΠΎΠ΄Ρ Π±ΡΠ»ΠΈ Π²ΠΈΠ²ΡΠ΅Π½Ρ ΡΠ°ΠΊΡ Π²Π°Π»ΡΠ΄Π°ΡΡΠΉΠ½Ρ Ρ
Π°ΡΠ°ΠΊΡΠ΅ΡΠΈΡΡΠΈΠΊΠΈ, ΡΠΊ ΡΡΡΠΉΠΊΡΡΡΡ, Π»ΡΠ½ΡΠΉΠ½ΡΡΡΡ, ΠΊΠΎΡΠ΅ΠΊΡΠ½ΡΡΡΡ, ΡΡΠ°Π±ΡΠ»ΡΠ½ΡΡΡΡ Π°Π½Π°Π»ΡΡΠΈΡΠ½ΠΈΡ
ΡΡΡΠ΅Π½Ρ, ΡΠΎΡΠ½ΡΡΡΡ, Π·Π±ΡΠΆΠ½ΡΡΡΡ, Π²ΡΠ΄ΡΠ²ΠΎΡΡΠ²Π°Π½ΡΡΡΡ, ΡΠΎΠ·ΡΠ°Ρ
ΡΠ½ΠΎΠΊ Π½Π΅Π²ΠΈΠ·Π½Π°ΡΠ΅Π½ΠΎΡΡΡ ΠΏΡΠ΄Π³ΠΎΡΠΎΠ²ΠΊΠΈ Π·ΡΠ°Π·ΠΊΡΠ².ΠΠΈΡΠ½ΠΎΠ²ΠΊΠΈ. Π ΠΎΠ·ΡΠΎΠ±Π»Π΅Π½ΠΎ ΠΌΠ΅ΡΠΎΠ΄ΠΈ ΡΠ΄Π΅Π½ΡΠΈΡΡΠΊΠ°ΡΡΡ N- (5-Π΅ΡΡΠ»- [1,3,4] -ΡΡΠ°Π΄ΡΠ°Π·ΠΎΠ»-2-ΡΠ») -2-Π½ΡΡΡΠΎΠ±Π΅Π½Π·Π°ΠΌΡΠ΄Ρ Π· Π²ΠΈΠΊΠΎΡΠΈΡΡΠ°Π½Π½ΡΠΌ Ρ
ΡΠΌΡΡΠ½ΠΈΡ
ΡΠ΅Π°ΠΊΡΡΠΉ Ρ ΡΠΏΠ΅ΠΊΡΡΠ°Π»ΡΠ½ΠΈΡ
ΠΌΠ΅ΡΠΎΠ΄ΡΠ² Π°Π½Π°Π»ΡΠ·Ρ - ΠΠ§ Ρ Π£Π€ ΡΠ° 1Π Π―ΠΠ -ΡΠΏΠ΅ΠΊΡΡΠΎΡΠΊΠΎΠΏΡΡ. ΠΠ»Ρ Π²ΠΈΠ·Π½Π°ΡΠ΅Π½Π½Ρ ΡΡΠΏΡΡΠ½ΡΡ
Π΄ΠΎΠΌΡΡΠΎΠΊ Π² ΡΡΠ±ΡΡΠ°Π½ΡΡΡ ΡΠ΅ΠΊΠΎΠΌΠ΅Π½Π΄ΠΎΠ²Π°Π½ΠΈΠΉ ΠΌΠ΅ΡΠΎΠ΄ Π’Π¨Π₯. ΠΠΈΠ·Π½Π°ΡΠ΅Π½ΠΎ ΡΠ΅Π³Π»Π°ΠΌΠ΅Π½ΡΠΎΠ²Π°Π½Ρ ΡΠΏΠ΅ΡΠΈΡΡΡΠ½Ρ Ρ Π½Π΅ΡΠΏΠ΅ΡΠΈΡΡΡΠ½Ρ Π΄ΠΎΠΌΡΡΠΊΠΈ. Π ΠΎΠ·ΡΠΎΠ±Π»Π΅Π½ΠΎ ΠΌΠ΅ΡΠΎΠ΄ΠΈΠΊΡ ΠΊΡΠ»ΡΠΊΡΡΠ½ΠΎΠ³ΠΎ Π²ΠΈΠ·Π½Π°ΡΠ΅Π½Π½Ρ ΡΡΠ±ΡΡΠ°Π½ΡΡΡ ΠΌΠ΅ΡΠΎΠ΄ΠΎΠΌ Π°Π±ΡΠΎΡΠ±ΡΡΠΉΠ½ΠΎΡ ΡΠΏΠ΅ΠΊΡΡΠΎΡΠΎΡΠΎΠΌΠ΅ΡΡΡΡ Π² ΡΠ»ΡΡΡΠ°ΡΡΠΎΠ»Π΅ΡΠΎΠ²ΡΠΉ Π΄ΡΠ»ΡΠ½ΡΡ ΠΌΠ΅ΡΠΎΠ΄ΠΎΠΌ ΠΏΠΈΡΠΎΠΌΠΎΠ³ΠΎ ΠΏΠΎΠΊΠ°Π·Π½ΠΈΠΊΠ° ΠΏΠΎΠ³Π»ΠΈΠ½Π°Π½Π½
Π ΠΎΠ·ΡΠΎΠ±ΠΊΠ° ΠΌΠ΅ΡΠΎΠ΄ΡΠ² ΠΊΠΎΠ½ΡΡΠΎΠ»Ρ ΡΠΊΠΎΡΡΡ ΠΏΠ΅ΡΡΠΏΠ΅ΠΊΡΠΈΠ²Π½ΠΎΠ³ΠΎ Π°Π½ΡΠΈΠΊΠΎΠ½Π²ΡΠ»ΡΡΠ°Π½ΡΠ°
In the previous studies, NUPh scientists proved that the search of potential anticonvulsants among derivatives of 1,3,4-thiadiazole is very perspective [1-3]. At the medicinal chemistry department of NUPh N-(5-ethyl-[1,3,4]-thiadiazole-2-yl)-2-nitrobenzamide was synthesized. This substance demonstrated high anticonvulsive activity on pentylentetrazole model of seizure compared to classic drug Β«DepakinΒ». The substance is patented and proposed for further preclinical studies. One of the most important stages in the introduction of a new medicinal product or substance into medical practice is the development of quality control techniques.The aim. The aim of this work was to develop methods of identification, determination of impurities and quantitative determination of N- (5-ethyl- [1,3,4] -thiadiazole-2-yl)-2-nitrobenzamide for further application in standardization of the substance.Methods. Chromatographically pure sample of N- (5-ethyl- [1,3,4] -thiadiazole-2-yl) -2-nitrobenzamide, methods of IR, UV and 1H NMR spectroscopy.Results. The physical-chemical properties and spectral characteristics of N-(5-ethyl-[1,3,4]-thiadiazole-2-yl)-2-nitrobenzamide were studied, and chemical identification methods were proposed. The optimal conditions for the determination of the impurities by the method of thin-layer chromatography using the method of internal normalization are selected. The assay for N- (5-ethyl- [1,3,4] -thiadiazol-2-yl) -2-nitrobenzamide was carried out by absorption spectrophotometry in the alcohol solution at the wavelength of 282 nm with the absorption index 631. For application of methods such validation characteristics as robustness, linearity, correctness, stability of analytical solutions, precision, convergence, reproducibility, calculation of uncertainty of samples preparation were studied.Conclusions. The methods of identification of N- (5-ethyl- [1,3,4] -thiadiazol-2-yl) -2-nitrobenzamide with the use of chemical reactions and spectral methods of analysis - IR and UV and 1H NMR spectroscopy have been developed. To determine the concomitant impurities in the substance, the TLC method is recommended. Specific and nonspecific impurities were determined. The method of quantitative determination of substance by absorption spectrophotometry method in the ultraviolet region by the method of specific absorption index have been developedΠΡΠ΅Π΄ΡΠ΄ΡΡΠΈΠΌΠΈ ΠΈΡΡΠ»Π΅Π΄ΠΎΠ²Π°Π½ΠΈΡΠΌΠΈ ΡΡΠ΅Π½ΡΡ
ΠΠ€ΠΠ£ Π΄ΠΎΠΊΠ°Π·Π°Π½Π° ΠΏΠ΅ΡΡΠΏΠ΅ΠΊΡΠΈΠ²Π½ΠΎΡΡΡ ΠΏΠΎΠΈΡΠΊΠ° ΠΏΠΎΡΠ΅Π½ΡΠΈΠ°Π»ΡΠ½ΡΡ
ΠΏΡΠΎΡΠΈΠ²ΠΎΡΡΠ΄ΠΎΡΠΎΠΆΠ½ΡΡ
ΡΡΠ΅Π΄ΡΡΠ² Π² ΡΡΠ΄Ρ ΠΏΡΠΎΠΈΠ·Π²ΠΎΠ΄Π½ΡΡ
1,3,4-ΡΠΈΠ°Π΄ΠΈΠ°Π·ΠΎΠ»Π° [1-3]. ΠΠ° ΠΊΠ°ΡΠ΅Π΄ΡΠ΅ ΠΌΠ΅Π΄ΠΈΡΠΈΠ½ΡΠΊΠΎΠΉ Ρ
ΠΈΠΌΠΈΠΈ ΠΠ€Π°Π£ ΡΠΈΠ½ΡΠ΅Π·ΠΈΡΠΎΠ²Π°Π½Π° ΡΡΠ±ΡΡΠ°Π½ΡΠΈΡ N- (5-ΡΡΠΈΠ» [1,3,4] -ΡΠΈΠ°Π΄ΠΈΠ°Π·ΠΎΠ»-2-ΠΈΠ») -2-Π½ΠΈΡΡΠΎΠ±Π΅Π½Π·Π°ΠΌΠΈΠ΄, ΠΊΠΎΡΠΎΡΠ°Ρ Π² ΡΡΠ»ΠΎΠ²ΠΈΡΡ
ΡΠΊΡΠΏΠ΅ΡΠΈΠΌΠ΅Π½ΡΠ° ΠΏΠΎΠΊΠ°Π·Π°Π»Π° Π²ΡΡΠΎΠΊΡΡ ΠΏΡΠΎΡΠΈΠ²ΠΎΡΡΠ΄ΠΎΡΠΎΠΆΠ½ΡΡ Π°ΠΊΡΠΈΠ²Π½ΠΎΡΡΡ Π½Π° ΠΊΠΎΡΠ°Π·ΠΎΠ»ΠΎΠ²ΠΎΠΉ ΠΌΠΎΠ΄Π΅Π»ΠΈ ΡΡΠ΄ΠΎΡΠΎΠ³ ΠΏΠΎ ΡΡΠ°Π²Π½Π΅Π½ΠΈΡ Ρ ΠΊΠ»Π°ΡΡΠΈΡΠ΅ΡΠΊΠΈΠΌ Π°Π½ΡΠΈΠΊΠΎΠ½Π²ΡΠ»ΡΡΠ°Π½ΡΠΎΠΌ - Β«ΠΠ΅ΠΏΠ°ΠΊΠΈΠ½ΠΎΠΌΒ». Π‘ΠΎΠ΅Π΄ΠΈΠ½Π΅Π½ΠΈΠ΅ Π·Π°ΠΏΠ°ΡΠ΅Π½ΡΠΎΠ²Π°Π½ΠΎ ΠΈ ΠΏΡΠ΅Π΄Π»ΠΎΠΆΠ΅Π½ΠΎ Π΄Π»Ρ Π΄Π°Π»ΡΠ½Π΅ΠΉΡΠΈΡ
Π΄ΠΎΠΊΠ»ΠΈΠ½ΠΈΡΠ΅ΡΠΊΠΈΡ
ΠΈΡΡΠ»Π΅Π΄ΠΎΠ²Π°Π½ΠΈΠΉ. ΠΠ΄Π½ΠΈΠΌ ΠΈΠ· Π²Π°ΠΆΠ½Π΅ΠΉΡΠΈΡ
ΡΡΠ°ΠΏΠΎΠ² Π²Π½Π΅Π΄ΡΠ΅Π½ΠΈΡ Π½ΠΎΠ²ΠΎΠ³ΠΎ Π»Π΅ΠΊΠ°ΡΡΡΠ²Π΅Π½Π½ΠΎΠ³ΠΎ ΡΡΠ΅Π΄ΡΡΠ²Π° ΠΈΠ»ΠΈ ΡΡΠ±ΡΡΠ°Π½ΡΠΈΠΈ Π² ΠΌΠ΅Π΄ΠΈΡΠΈΠ½ΡΠΊΡΡ ΠΏΡΠ°ΠΊΡΠΈΠΊΡ ΡΠ²Π»ΡΠ΅ΡΡΡ ΡΠ°Π·ΡΠ°Π±ΠΎΡΠΊΠ° ΠΌΠ΅ΡΠΎΠ΄ΠΈΠΊ ΠΊΠΎΠ½ΡΡΠΎΠ»Ρ ΠΊΠ°ΡΠ΅ΡΡΠ²Π°.Π¦Π΅Π»Ρ. Π¦Π΅Π»ΡΡ Π΄Π°Π½Π½ΠΎΠΉ ΡΠ°Π±ΠΎΡΡ Π±ΡΠ»Π° ΡΠ°Π·ΡΠ°Π±ΠΎΡΠΊΠ° ΠΌΠ΅ΡΠΎΠ΄ΠΈΠΊ ΠΈΠ΄Π΅Π½ΡΠΈΡΠΈΠΊΠ°ΡΠΈΠΈ, ΠΎΠΏΡΠ΅Π΄Π΅Π»Π΅Π½ΠΈΡ ΠΏΡΠΈΠΌΠ΅ΡΠ΅ΠΉ ΠΈ ΠΊΠΎΠ»ΠΈΡΠ΅ΡΡΠ²Π΅Π½Π½ΠΎΠ³ΠΎ ΠΎΠΏΡΠ΅Π΄Π΅Π»Π΅Π½ΠΈΡ N- (5-ΡΡΠΈΠ» [1,3,4] -ΡΠΈΠ°Π΄ΠΈΠ°Π·ΠΎΠ»-2-ΠΈΠ») -2-Π½ΠΈΡΡΠΎΠ±Π΅Π½Π·Π°ΠΌΠΈΠ΄Π° Ρ ΡΠ΅Π»ΡΡ Π΄Π°Π»ΡΠ½Π΅ΠΉΡΠ΅Π³ΠΎ ΠΏΡΠΈΠΌΠ΅Π½Π΅Π½ΠΈΡ Π² ΡΡΠ°Π½Π΄Π°ΡΡΠΈΠ·Π°ΡΠΈΠΈ ΡΡΠ±ΡΡΠ°Π½ΡΠΈΠΈ.ΠΠ΅ΡΠΎΠ΄Ρ. Π₯ΡΠΎΠΌΠ°ΡΠΎΠ³ΡΠ°ΡΠΈΡΠ΅ΡΠΊΠΈ ΡΠΈΡΡΡΠΉ ΠΎΠ±ΡΠ°Π·Π΅Ρ N- (5-ΡΡΠΈΠ» [1,3,4] -ΡΠΈΠ°Π΄ΠΈΠ°Π·ΠΎΠ»-2-ΠΈΠ») -2-Π½ΠΈΡΡΠΎΠ±Π΅Π½Π·Π°ΠΌΠΈΠ΄Π°, ΠΌΠ΅ΡΠΎΠ΄Ρ ΠΠ-, Π£Π€- ΠΈ 1Π Π―ΠΠ ΡΠΏΠ΅ΠΊΡΡΠΎΡΠΊΠΎΠΏΠΈΠΈ.Π Π΅Π·ΡΠ»ΡΡΠ°ΡΡ. ΠΠ·ΡΡΠ΅Π½Ρ ΡΠΈΠ·ΠΈΠΊΠΎ-Ρ
ΠΈΠΌΠΈΡΠ΅ΡΠΊΠΈΠ΅ ΡΠ²ΠΎΠΉΡΡΠ²Π° ΠΈ ΡΠΏΠ΅ΠΊΡΡΠ°Π»ΡΠ½ΡΠ΅ Ρ
Π°ΡΠ°ΠΊΡΠ΅ΡΠΈΡΡΠΈΠΊΠΈ N- (5-ΡΡΠΈΠ» [1,3,4] -ΡΠΈΠ°Π΄ΠΈΠ°Π·ΠΎΠ»-2-ΠΈΠ») -2-Π½ΠΈΡΡΠΎΠ±Π΅Π½Π·Π°ΠΌΠΈΠ΄Π°, ΠΏΡΠ΅Π΄Π»ΠΎΠΆΠ΅Π½Ρ Ρ
ΠΈΠΌΠΈΡΠ΅ΡΠΊΠΈΠ΅ ΠΌΠ΅ΡΠΎΠ΄Ρ ΠΈΠ΄Π΅Π½ΡΠΈΡΠΈΠΊΠ°ΡΠΈΠΈ. ΠΠΎΠ΄ΠΎΠ±ΡΠ°Π½Ρ ΠΎΠΏΡΠΈΠΌΠ°Π»ΡΠ½ΡΠ΅ ΡΡΠ»ΠΎΠ²ΠΈΡ ΠΎΠΏΡΠ΅Π΄Π΅Π»Π΅Π½ΠΈΡ ΡΠΎΠΏΡΡΡΡΠ²ΡΡΡΠΈΡ
ΠΏΡΠΈΠΌΠ΅ΡΠ΅ΠΉ ΠΌΠ΅ΡΠΎΠ΄ΠΎΠΌ ΡΠΎΠ½ΠΊΠΎΡΠ»ΠΎΠΉΠ½ΠΎΠΉ Ρ
ΡΠΎΠΌΠ°ΡΠΎΠ³ΡΠ°ΡΠΈΠΈ Ρ ΠΈΡΠΏΠΎΠ»ΡΠ·ΠΎΠ²Π°Π½ΠΈΠ΅ΠΌ ΠΌΠ΅ΡΠΎΠ΄Π° Π²Π½ΡΡΡΠ΅Π½Π½Π΅ΠΉ Π½ΠΎΡΠΌΠ°Π»ΠΈΠ·Π°ΡΠΈΠΈ. ΠΠ½Π°Π»ΠΈΠ· N- (5-ΡΡΠΈΠ»- [1,3,4] -ΡΠΈΠ°Π΄ΠΈΠ°Π·ΠΎΠ»-2-ΠΈΠ») -2-Π½ΠΈΡΡΠΎΠ±Π΅Π½Π·Π°ΠΌΠΈΠ΄Π° ΠΏΡΠΎΠ²ΠΎΠ΄ΠΈΠ»ΠΈ ΠΌΠ΅ΡΠΎΠ΄ΠΎΠΌ Π°Π±ΡΠΎΡΠ±ΡΠΈΠΎΠ½Π½ΠΎΠΉ ΡΠΏΠ΅ΠΊΡΡΠΎΡΠΎΡΠΎΠΌΠ΅ΡΡΠΈΠΈ Π² ΡΡΠ°Π½ΠΎΠ»ΡΠ½ΠΎΠΌ ΡΠ°ΡΡΠ²ΠΎΡΠ΅ ΠΏΡΠΈ Π΄Π»ΠΈΠ½Π΅ Π²ΠΎΠ»Π½Ρ 282 Π½ΠΌ Ρ ΠΏΠΎΠΊΠ°Π·Π°ΡΠ΅Π»Π΅ΠΌ ΠΏΠΎΠ³Π»ΠΎΡΠ΅Π½ΠΈΡ 631. ΠΠ»Ρ ΠΏΡΠΈΠΌΠ΅Π½Π΅Π½ΠΈΡ ΠΌΠ΅ΡΠΎΠ΄Π° Π±ΡΠ»ΠΈ ΠΈΠ·ΡΡΠ΅Π½Ρ ΡΠ°ΠΊΠΈΠ΅ Π²Π°Π»ΠΈΠ΄Π°ΡΠΈΠΎΠ½Π½ΡΠ΅ Ρ
Π°ΡΠ°ΠΊΡΠ΅ΡΠΈΡΡΠΈΠΊΠΈ, ΠΊΠ°ΠΊ ΡΡΡΠΎΠΉΡΠΈΠ²ΠΎΡΡΡ, Π»ΠΈΠ½Π΅ΠΉΠ½ΠΎΡΡΡ, ΠΊΠΎΡΡΠ΅ΠΊΡΠ½ΠΎΡΡΡ, ΡΡΠ°Π±ΠΈΠ»ΡΠ½ΠΎΡΡΡ Π°Π½Π°Π»ΠΈΡΠΈΡΠ΅ΡΠΊΠΈΡ
ΡΠ΅ΡΠ΅Π½ΠΈΠΉ, ΡΠΎΡΠ½ΠΎΡΡΡ, ΡΡ
ΠΎΠ΄ΠΈΠΌΠΎΡΡΡ, Π²ΠΎΡΠΏΡΠΎΠΈΠ·Π²ΠΎΠ΄ΠΈΠΌΠΎΡΡΡ, ΡΠ°ΡΡΠ΅Ρ Π½Π΅ΠΎΠΏΡΠ΅Π΄Π΅Π»Π΅Π½Π½ΠΎΡΡΠΈ ΠΏΠΎΠ΄Π³ΠΎΡΠΎΠ²ΠΊΠΈ ΠΎΠ±ΡΠ°Π·ΡΠΎΠ².ΠΡΠ²ΠΎΠ΄Ρ. Π Π°Π·ΡΠ°Π±ΠΎΡΠ°Π½Ρ ΠΌΠ΅ΡΠΎΠ΄Ρ ΠΈΠ΄Π΅Π½ΡΠΈΡΠΈΠΊΠ°ΡΠΈΠΈ N- (5-Π΅ΡΠΈΠ»- [1,3,4] -ΡΠΈΠ°Π΄ΠΈΠ°Π·ΠΎΠ»-2-ΠΈΠ») -2-Π½ΠΈΡΡΠΎΠ±Π΅Π½Π·Π°ΠΌΠΈΠ΄Π° Ρ ΠΈΡΠΏΠΎΠ»ΡΠ·ΠΎΠ²Π°Π½ΠΈΠ΅ΠΌ Ρ
ΠΈΠΌΠΈΡΠ΅ΡΠΊΠΈΡ
ΡΠ΅Π°ΠΊΡΠΈΠΉ ΠΈ ΡΠΏΠ΅ΠΊΡΡΠ°Π»ΡΠ½ΡΡ
ΠΌΠ΅ΡΠΎΠ΄ΠΎΠ² Π°Π½Π°Π»ΠΈΠ·Π° - ΠΠ ΠΈ Π£Π€ ΠΈ 1Π Π―ΠΠ -ΡΠΏΠ΅ΠΊΡΡΠΎΡΠΊΠΎΠΏΠΈΠΈ. ΠΠ»Ρ ΠΎΠΏΡΠ΅Π΄Π΅Π»Π΅Π½ΠΈΡ ΡΠΎΠΏΡΡΡΡΠ²ΡΡΡΠΈΡ
ΠΏΡΠΈΠΌΠ΅ΡΠ΅ΠΉ Π² ΡΡΠ±ΡΡΠ°Π½ΡΠΈΠΈ ΡΠ΅ΠΊΠΎΠΌΠ΅Π½Π΄ΠΎΠ²Π°Π½ ΠΌΠ΅ΡΠΎΠ΄ Π’Π‘Π₯. ΠΠΏΡΠ΅Π΄Π΅Π»Π΅Π½Ρ ΡΠ΅Π³Π»Π°ΠΌΠ΅Π½ΡΠΈΡΠΎΠ²Π°Π½Π½ΡΠ΅ ΡΠΏΠ΅ΡΠΈΡΠΈΡΠ΅ΡΠΊΠΈΠ΅ ΠΈ Π½Π΅ΡΠΏΠ΅ΡΠΈΡΠΈΡΠ΅ΡΠΊΠΈΠ΅ ΠΏΡΠΈΠΌΠ΅ΡΠΈ. Π Π°Π·ΡΠ°Π±ΠΎΡΠ°Π½Π° ΠΌΠ΅ΡΠΎΠ΄ΠΈΠΊΠ° ΠΊΠΎΠ»ΠΈΡΠ΅ΡΡΠ²Π΅Π½Π½ΠΎΠ³ΠΎ ΠΎΠΏΡΠ΅Π΄Π΅Π»Π΅Π½ΠΈΡ ΡΡΠ±ΡΡΠ°Π½ΡΠΈΠΈ ΠΌΠ΅ΡΠΎΠ΄ΠΎΠΌ Π°Π±ΡΠΎΡΠ±ΡΠΈΠΎΠ½Π½ΠΎΠΉ ΡΠΏΠ΅ΠΊΡΡΠΎΡΠΎΡΠΎΠΌΠ΅ΡΡΠΈΠΈ Π² ΡΠ»ΡΡΡΠ°ΡΠΈΠΎΠ»Π΅ΡΠΎΠ²ΠΎΠΉ ΠΎΠ±Π»Π°ΡΡΠΈ ΠΌΠ΅ΡΠΎΠ΄ΠΎΠΌ ΡΠ΄Π΅Π»ΡΠ½ΠΎΠ³ΠΎ ΠΏΠΎΠΊΠ°Π·Π°ΡΠ΅Π»Ρ ΠΏΠΎΠ³Π»ΠΎΡΠ΅Π½ΠΈΡΠΠΎΠΏΠ΅ΡΠ΅Π΄Π½ΡΠΌΠΈ Π΄ΠΎΡΠ»ΡΠ΄ΠΆΠ΅Π½Π½ΡΠΌΠΈ Π²ΡΠ΅Π½ΠΈΡ
ΠΠ€ΠΠ£ Π΄ΠΎΠ²Π΅Π΄Π΅Π½Π° ΠΏΠ΅ΡΡΠΏΠ΅ΠΊΡΠΈΠ²Π½ΡΡΡΡ ΠΏΠΎΡΡΠΊΡ ΠΏΠΎΡΠ΅Π½ΡΡΠΉΠ½ΠΈΡ
Π°Π½ΡΠΈΠΊΠΎΠ½Π²ΡΠ»ΡΡΠ°Π½ΡΡΠ² Π² ΡΡΠ΄Ρ ΠΏΠΎΡ
ΡΠ΄Π½ΠΈΡ
1,3,4-ΡΡΠ°Π΄ΡΠ°Π·ΠΎΠ»Ρ[1-3]. ΠΠ° ΠΊΠ°ΡΠ΅Π΄ΡΡ ΠΌΠ΅Π΄ΠΈΡΠ½ΠΎΡ Ρ
ΡΠΌΡΡ ΠΠ€Π°Π£ ΡΠΈΠ½ΡΠ΅Π·ΠΎΠ²Π°Π½Π° ΡΠΏΠΎΠ»ΡΠΊΠ° N-(5-Π΅ΡΠΈΠ»-[1,3,4]-ΡΡΠ°Π΄ΡΠ°Π·ΠΎΠ»-2-ΡΠ»)-2-Π½ΡΡΡΠΎΠ±Π΅Π½Π·Π°ΠΌΡΠ΄, ΡΠΊΠ° Π² ΡΠΌΠΎΠ²Π°Ρ
Π΅ΠΊΡΠΏΠ΅ΡΠΈΠΌΠ΅Π½ΡΡ ΠΏΠΎΠΊΠ°Π·Π°Π»Π°Β Π²ΠΈΡΠΎΠΊΡ ΠΏΡΠΎΡΠΈΡΡΠ΄ΠΎΠΌΠ½Ρ Π°ΠΊΡΠΈΠ²Π½ΡΡΡΡ Π½Π° ΠΊΠΎΡΠ°Π·ΠΎΠ»ΠΎΠ²ΡΠΉ ΠΌΠΎΠ΄Π΅Π»Ρ ΡΡΠ΄ΠΎΠΌ Ρ ΠΏΠΎΡΡΠ²Π½ΡΠ½Π½Ρ Π· ΠΊΠ»Π°ΡΠΈΡΠ½ΠΈΠΌ Π°Π½ΡΠΈΠΊΠΎΠ½Π²ΡΠ»ΡΡΠ°Π½ΡΠΎΠΌ β Β«ΠΠ΅ΠΏΠ°ΠΊΡΠ½ΠΎΠΌΒ». Π‘ΠΏΠΎΠ»ΡΠΊΠ° Π·Π°ΠΏΠ°ΡΠ΅Π½ΡΠΎΠ²Π°Π½Π° ΡΠ° Π·Π°ΠΏΡΠΎΠΏΠΎΠ½ΠΎΠ²Π°Π½Π° Π΄Π»Ρ ΠΏΠΎΠ΄Π°Π»ΡΡΠΈΡ
Π΄ΠΎΠΊΠ»ΡΠ½ΡΡΠ½ΠΈΡ
Π΄ΠΎΡΠ»ΡΠ΄ΠΆΠ΅Π½Ρ. ΠΠ΄Π½ΠΈΠΌ Π· Π½Π°ΠΉΠ²Π°ΠΆΠ»ΠΈΠ²ΡΡΠΈΡ
Π΅ΡΠ°ΠΏΡΠ² Π²ΠΏΡΠΎΠ²Π°Π΄ΠΆΠ΅Π½Π½Ρ Π½ΠΎΠ²ΠΎΠ³ΠΎ Π»ΡΠΊΠ°ΡΡΡΠΊΠΎΠ³ΠΎ Π·Π°ΡΠΎΠ±Ρ Π°Π±ΠΎ ΡΡΠ±ΡΡΠ°Π½ΡΡΡ Π² ΠΌΠ΅Π΄ΠΈΡΠ½Ρ ΠΏΡΠ°ΠΊΡΠΈΠΊΡ Ρ ΡΠΎΠ·ΡΠΎΠ±ΠΊΠ° ΠΌΠ΅ΡΠΎΠ΄ΠΈΠΊ ΠΊΠΎΠ½ΡΡΠΎΠ»Ρ ΡΠΊΠΎΡΡΡ.ΠΠ΅ΡΠ°.Β ΠΠ΅ΡΠΎΡΒ Π΄Π°Π½ΠΎΡΒ ΡΠΎΠ±ΠΎΡΠΈΒ Π±ΡΠ»Π° ΡΠΎΠ·ΡΠΎΠ±ΠΊΠ° ΠΌΠ΅ΡΠΎΠ΄ΠΈΠΊ ΡΠ΄Π΅Π½ΡΠΈΡΡΠΊΠ°ΡΡΡ, Π²ΠΈΠ·Π½Π°ΡΠ΅Π½Π½Ρ Π΄ΠΎΠΌΡΡΠΎΠΊ ΡΠ° ΠΊΡΠ»ΡΠΊΡΡΠ½ΠΎΠ³ΠΎ Π²ΠΈΠ·Π½Π°ΡΠ΅Π½Π½Ρ N-(5-Π΅ΡΠΈΠ»-[1,3,4]-ΡΡΠ°Π΄ΡΠ°Π·ΠΎΠ»-2-ΡΠ»)-2-Π½ΡΡΡΠΎΠ±Π΅Π½Π·Π°ΠΌΡΠ΄Ρ Π· ΠΌΠ΅ΡΠΎΡ ΠΏΠΎΠ΄Π°Π»ΡΡΠΎΠ³ΠΎ Π·Π°ΡΡΠΎΡΡΠ²Π°Π½Π½Ρ Π² ΡΡΠ°Π½Π΄Π°ΡΡΠΈΠ·Π°ΡΡΡ ΡΡΠ±ΡΡΠ°Π½ΡΡΡ.ΠΠ΅ΡΠΎΠ΄ΠΈ. Π₯ΡΠΎΠΌΠ°ΡΠΎΠ³ΡΠ°ΡΡΡΠ½ΠΎ ΡΠΈΡΡΠΈΠΉ Π·ΡΠ°Π·ΠΎΠΊ N-(5-Π΅ΡΠΈΠ»-[1,3,4]-ΡΡΠ°Π΄ΡΠ°Π·ΠΎΠ»-2-ΡΠ»)-2-Π½ΡΡΡΠΎΠ±Π΅Π½Π·Π°ΠΌΡΠ΄Ρ, ΠΌΠ΅ΡΠΎΠ΄ΠΈ ΠΠ§-, Π£Π€- ΡΠ° 1Π Π―ΠΠ ΡΠΏΠ΅ΠΊΡΡΠΎΡΠΊΠΎΠΏΡΡ.Π Π΅Π·ΡΠ»ΡΡΠ°ΡΠΈ. ΠΠΈΠ²ΡΠ΅Π½ΠΎ ΡΡΠ·ΠΈΠΊΠΎ-Ρ
ΡΠΌΡΡΠ½Ρ Π²Π»Π°ΡΡΠΈΠ²ΠΎΡΡΡ Ρ ΡΠΏΠ΅ΠΊΡΡΠ°Π»ΡΠ½Ρ Ρ
Π°ΡΠ°ΠΊΡΠ΅ΡΠΈΡΡΠΈΠΊΠΈ N-(5-Π΅ΡΠΈΠ»-[1,3,4]-ΡΡΠ°Π΄ΡΠ°Π·ΠΎΠ»-2-ΡΠ»)-2-Π½ΡΡΡΠΎΠ±Π΅Π½Π·Π°ΠΌΡΠ΄Ρ, Π·Π°ΠΏΡΠΎΠΏΠΎΠ½ΠΎΠ²Π°Π½ΠΎ Ρ
ΡΠΌΡΡΠ½Ρ ΠΌΠ΅ΡΠΎΠ΄ΠΈ ΡΠ΄Π΅Π½ΡΠΈΡΡΠΊΠ°ΡΡΡ. ΠΡΠ΄ΡΠ±ΡΠ°Π½ΠΎ ΠΎΠΏΡΠΈΠΌΠ°Π»ΡΠ½Ρ ΡΠΌΠΎΠ²ΠΈ Π²ΠΈΠ·Π½Π°ΡΠ΅Π½Π½Ρ ΡΡΠΏΡΡΠ½ΡΡ
Π΄ΠΎΠΌΡΡΠΎΠΊ ΠΌΠ΅ΡΠΎΠ΄ΠΎΠΌ ΡΠΎΠ½ΠΊΠΎΡΠ°ΡΠΎΠ²ΠΎΡ Ρ
ΡΠΎΠΌΠ°ΡΠΎΠ³ΡΠ°ΡΡΡ Π· Π²ΠΈΠΊΠΎΡΠΈΡΡΠ°Π½Π½ΡΠΌ ΠΌΠ΅ΡΠΎΠ΄Ρ Π²Π½ΡΡΡΡΡΠ½ΡΠΎΡ Π½ΠΎΡΠΌΠ°Π»ΡΠ·Π°ΡΡΡ. ΠΠ½Π°Π»ΡΠ· N- (5-Π΅ΡΠΈΠ»-[1,3,4] -ΡΡΠ°Π΄ΡΠ°Π·ΠΎΠ»-2-ΡΠ») -2-Π½ΡΡΡΠΎΠ±Π΅Π½Π·Π°ΠΌΡΠ΄Π° ΠΏΡΠΎΠ²ΠΎΠ΄ΠΈΠ»ΠΈ ΠΌΠ΅ΡΠΎΠ΄ΠΎΠΌ Π°Π±ΡΠΎΡΠ±ΡΡΠΉΠ½ΠΎΡ ΡΠΏΠ΅ΠΊΡΡΠΎΡΠΎΡΠΎΠΌΠ΅ΡΡΡΡ Π² Π΅ΡΠ°Π½ΠΎΠ»ΡΠ½ΠΎΠΌΡ ΡΠΎΠ·ΡΠΈΠ½Ρ ΠΏΡΠΈ Π΄ΠΎΠ²ΠΆΠΈΠ½Ρ Ρ
Π²ΠΈΠ»Ρ 282 Π½ΠΌ Π· ΠΏΠΎΠΊΠ°Π·Π½ΠΈΠΊΠΎΠΌ ΠΏΠΎΠ³Π»ΠΈΠ½Π°Π½Π½Ρ 631. ΠΠ»Ρ Π·Π°ΡΡΠΎΡΡΠ²Π°Π½Π½Ρ ΠΌΠ΅ΡΠΎΠ΄Ρ Π±ΡΠ»ΠΈ Π²ΠΈΠ²ΡΠ΅Π½Ρ ΡΠ°ΠΊΡ Π²Π°Π»ΡΠ΄Π°ΡΡΠΉΠ½Ρ Ρ
Π°ΡΠ°ΠΊΡΠ΅ΡΠΈΡΡΠΈΠΊΠΈ, ΡΠΊ ΡΡΡΠΉΠΊΡΡΡΡ, Π»ΡΠ½ΡΠΉΠ½ΡΡΡΡ, ΠΊΠΎΡΠ΅ΠΊΡΠ½ΡΡΡΡ, ΡΡΠ°Π±ΡΠ»ΡΠ½ΡΡΡΡ Π°Π½Π°Π»ΡΡΠΈΡΠ½ΠΈΡ
ΡΡΡΠ΅Π½Ρ, ΡΠΎΡΠ½ΡΡΡΡ, Π·Π±ΡΠΆΠ½ΡΡΡΡ, Π²ΡΠ΄ΡΠ²ΠΎΡΡΠ²Π°Π½ΡΡΡΡ, ΡΠΎΠ·ΡΠ°Ρ
ΡΠ½ΠΎΠΊ Π½Π΅Π²ΠΈΠ·Π½Π°ΡΠ΅Π½ΠΎΡΡΡ ΠΏΡΠ΄Π³ΠΎΡΠΎΠ²ΠΊΠΈ Π·ΡΠ°Π·ΠΊΡΠ².ΠΠΈΡΠ½ΠΎΠ²ΠΊΠΈ. Π ΠΎΠ·ΡΠΎΠ±Π»Π΅Π½ΠΎ ΠΌΠ΅ΡΠΎΠ΄ΠΈ ΡΠ΄Π΅Π½ΡΠΈΡΡΠΊΠ°ΡΡΡ N- (5-Π΅ΡΡΠ»- [1,3,4] -ΡΡΠ°Π΄ΡΠ°Π·ΠΎΠ»-2-ΡΠ») -2-Π½ΡΡΡΠΎΠ±Π΅Π½Π·Π°ΠΌΡΠ΄Ρ Π· Π²ΠΈΠΊΠΎΡΠΈΡΡΠ°Π½Π½ΡΠΌ Ρ
ΡΠΌΡΡΠ½ΠΈΡ
ΡΠ΅Π°ΠΊΡΡΠΉ Ρ ΡΠΏΠ΅ΠΊΡΡΠ°Π»ΡΠ½ΠΈΡ
ΠΌΠ΅ΡΠΎΠ΄ΡΠ² Π°Π½Π°Π»ΡΠ·Ρ - ΠΠ§ Ρ Π£Π€ ΡΠ° 1Π Π―ΠΠ -ΡΠΏΠ΅ΠΊΡΡΠΎΡΠΊΠΎΠΏΡΡ. ΠΠ»Ρ Π²ΠΈΠ·Π½Π°ΡΠ΅Π½Π½Ρ ΡΡΠΏΡΡΠ½ΡΡ
Π΄ΠΎΠΌΡΡΠΎΠΊ Π² ΡΡΠ±ΡΡΠ°Π½ΡΡΡ ΡΠ΅ΠΊΠΎΠΌΠ΅Π½Π΄ΠΎΠ²Π°Π½ΠΈΠΉ ΠΌΠ΅ΡΠΎΠ΄ Π’Π¨Π₯. ΠΠΈΠ·Π½Π°ΡΠ΅Π½ΠΎ ΡΠ΅Π³Π»Π°ΠΌΠ΅Π½ΡΠΎΠ²Π°Π½Ρ ΡΠΏΠ΅ΡΠΈΡΡΡΠ½Ρ Ρ Π½Π΅ΡΠΏΠ΅ΡΠΈΡΡΡΠ½Ρ Π΄ΠΎΠΌΡΡΠΊΠΈ. Π ΠΎΠ·ΡΠΎΠ±Π»Π΅Π½ΠΎ ΠΌΠ΅ΡΠΎΠ΄ΠΈΠΊΡ ΠΊΡΠ»ΡΠΊΡΡΠ½ΠΎΠ³ΠΎ Π²ΠΈΠ·Π½Π°ΡΠ΅Π½Π½Ρ ΡΡΠ±ΡΡΠ°Π½ΡΡΡ ΠΌΠ΅ΡΠΎΠ΄ΠΎΠΌ Π°Π±ΡΠΎΡΠ±ΡΡΠΉΠ½ΠΎΡ ΡΠΏΠ΅ΠΊΡΡΠΎΡΠΎΡΠΎΠΌΠ΅ΡΡΡΡ Π² ΡΠ»ΡΡΡΠ°ΡΡΠΎΠ»Π΅ΡΠΎΠ²ΡΠΉ Π΄ΡΠ»ΡΠ½ΡΡ ΠΌΠ΅ΡΠΎΠ΄ΠΎΠΌ ΠΏΠΈΡΠΎΠΌΠΎΠ³ΠΎ ΠΏΠΎΠΊΠ°Π·Π½ΠΈΠΊΠ° ΠΏΠΎΠ³Π»ΠΈΠ½Π°Π½Π½
QSAR-analysis of 1-[2-(R-phenylimino)-4-methyl-3-(3-[morpholine-4-yl]propyl)-2,3-dihydro-1,3-thiazol-5-yl]ethane-1-oneβs derivatives as potential antioxidants
Aim. The aim of study was to determine of the parameters of the molecular structure of new 1-[2-(R-phenylimino)-4-methyl-3-(3-[morpholine-4-yl]propyl)-2,3-dihydro-1,3-thiazol-5-yl]ethane-1-one derivatives and QSAR-analysis. The latter can be considered as the theoretical basis for de novo design of new potential antioxidants.
Materials and methods. 14 new derivatives of 1-[2-(R-phenylimino)-4-methyl-3-(3-[morpholine-4-yl] propyl)-2,3-dihydro-1,3-thiazol-5-yl]ethane-1-one were involved in the study and their antioxidant activities were evaluated. Hyper-Chem 7.59 and BuildQSAR software were used for calculation of molecular descriptors and building the QSAR-models.
Results. The calculation of number of molecular descriptors (electronic, steric, geometric, energy) was carried out for the tested compounds: 14 derivatives of 1-[2-(R-phenylimino)-4-methyl-3-(3-[morpholine-4-yl] propyl) -2,3-dihydro-1,3-thiazol-5-yl]ethane-1-one. For QSAR analysis, the compounds studied were divided into a training and test sample. The correlations between the antioxidant activity level and abovementioned molecular descriptors were shown in multivariate linear QSAR-model: Activity = βΡ
ΡΠ°Ρ + bΡ, where xi β molecular descriptor. Based on the analysis of the obtained QSAR-models, it was found that antioxidant activity increases with decreasing of the area, molecular volume, lipophilicity, polarisation and increasing the magnitude of the dipole moment. The increase in the energy of the bonds, the energy of inter-nuclear interactions, the energy of the lower vacant molecular orbit and the reduction of the energy of hydration and energy of the higher vacant molecular orbitals also results in an increase in the antioxidant activity. The greatest effect of effective charges on atoms on the antioxidant activity was detected: the increase in the charge value on the morpholine cycle Oxygen and the decrease in the charge size on the Sulphur atom of the thiazole ring and the Oxygen atom of the acetyl group. QSAR models with better statistics were selected. QSAR models obtained are characterised by high predictive ability, determined both by internal and external validation and can be used for virtual screening of the antioxidant activity of substances of this class of compounds.
Conclusions. 1). The study of the structureβactivity relationships for 1-[2-(R-phenylimino)-4-methyl-3-(3- [morpholine-4-yl]propyl)-2,3-dihydro-1,3-thiazol-5-yl]ethane-1-one derivatives were carried out. 2). QSAR analysis revealed the following: polarisation, dipole moment, lipophilicity, energy parameters as well as the size of the molecule and its branching possessed the most significant effect on antioxidant activity; the antioxidant activities of the compounds were increased with the increase in their hydrophilic and reductive properties; the molecules with small volume and surface area showed the higher level of antioxidant activity. 3). Obtained QSAR models are proposed for antioxidant activity prediction within the above-mentioned row of compounds and can be considered as a theoretical basis for de novo design of new potential antioxidants
Cardioprotective Activity of Some 2-Arylimino-1,3-Thiazole Derivatives
The article presents the synthesis of 2-arylimino-4-methyl-2,3-dihydro-1,3-thiazoles via Hantzsch reaction of thioureas and 3-chloropentane-2,4-dione or ethyl 2-chloro-3-oxobutanoate. The structure of synthesized compounds was confirmed by LCMS, 1H, and 13C NMR spectra. Cardioprotective activity of synthesized thiazole derivatives were studied in vitro on the isolated rings of the thoracic aorta of laboratory rats. Based on pharmacological studies, the tested compounds possessed a moderate to high cardioprotective effect. A prospective 1-[2-(4-methoxyphenylimino)-4-methyl-3-(4-methylpiperazine-1-yl)-2,3-dihydro-1,3-thiazole-5-yl] ethan-1-one hydrochloride 4c was identified. The mentioned compound has delayed the development of constrictor responses of isolated rings of the thoracic rat aorta and exceeds the activity of L-carnitine by 18.2% and meldonium by 12.9%. The compound 4c may be proposed as a potential cardioprotective agent for in-depth pharmacological studies
Development of Quality Control Methods of Promising Anticonvulsant
In the previous studies, NUPh scientists proved that the search of potential anticonvulsants among derivatives of 1,3,4-thiadiazole is very perspective [1-3]. At the medicinal chemistry department of NUPh N-(5-ethyl-[1,3,4]-thiadiazole-2-yl)-2-nitrobenzamide was synthesized. This substance demonstrated high anticonvulsive activity on pentylentetrazole model of seizure compared to classic drug Β«DepakinΒ». The substance is patented and proposed for further preclinical studies. One of the most important stages in the introduction of a new medicinal product or substance into medical practice is the development of quality control techniques.The aim. The aim of this work was to develop methods of identification, determination of impurities and quantitative determination of N- (5-ethyl- [1,3,4] -thiadiazole-2-yl)-2-nitrobenzamide for further application in standardization of the substance.Methods. Chromatographically pure sample of N- (5-ethyl- [1,3,4] -thiadiazole-2-yl) -2-nitrobenzamide, methods of IR, UV and 1H NMR spectroscopy.Results. The physical-chemical properties and spectral characteristics of N-(5-ethyl-[1,3,4]-thiadiazole-2-yl)-2-nitrobenzamide were studied, and chemical identification methods were proposed. The optimal conditions for the determination of the impurities by the method of thin-layer chromatography using the method of internal normalization are selected. The assay for N- (5-ethyl- [1,3,4] -thiadiazol-2-yl) -2-nitrobenzamide was carried out by absorption spectrophotometry in the alcohol solution at the wavelength of 282 nm with the absorption index 631. For application of methods such validation characteristics as robustness, linearity, correctness, stability of analytical solutions, precision, convergence, reproducibility, calculation of uncertainty of samples preparation were studied.Conclusions. The methods of identification of N- (5-ethyl- [1,3,4] -thiadiazol-2-yl) -2-nitrobenzamide with the use of chemical reactions and spectral methods of analysis - IR and UV and 1H NMR spectroscopy have been developed. To determine the concomitant impurities in the substance, the TLC method is recommended. Specific and nonspecific impurities were determined. The method of quantitative determination of substance by absorption spectrophotometry method in the ultraviolet region by the method of specific absorption index have been develope