PL402467A1 - 1,2,4-triazole derivative: 5-(2,3-dichlorophenyl)-4-pentyl-2,4-dihydro-3H-1,2,4-triazole-3-thione, a method for its preparation and its first medical application - Google Patents

1,2,4-triazole derivative: 5-(2,3-dichlorophenyl)-4-pentyl-2,4-dihydro-3H-1,2,4-triazole-3-thione, a method for its preparation and its first medical application

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Publication number
PL402467A1
PL402467A1 PL402467A PL40246713A PL402467A1 PL 402467 A1 PL402467 A1 PL 402467A1 PL 402467 A PL402467 A PL 402467A PL 40246713 A PL40246713 A PL 40246713A PL 402467 A1 PL402467 A1 PL 402467A1
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PL
Poland
Prior art keywords
reaction
pentyl
triazole
pharmaceutically acceptable
acceptable salts
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PL402467A
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Polish (pl)
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PL221233B1 (en
Inventor
Tomasz Plech
Jarogniew J. Łuszczki
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Uniwersytet Medyczny W Lublinie
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Application filed by Uniwersytet Medyczny W Lublinie filed Critical Uniwersytet Medyczny W Lublinie
Priority to PL402467A priority Critical patent/PL221233B1/en
Publication of PL402467A1 publication Critical patent/PL402467A1/en
Publication of PL221233B1 publication Critical patent/PL221233B1/en

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Abstract

Przedmiotem wynalazku jest pochodna 1,2,4-triazolu o wzorze ogólnym 1, oraz jej farmaceutycznie dopuszczalne sole. Przedmiotem jest także sposób wytwarzania pochodnych 5-(2,3-dichlorofenylo)-4-pentylo- 2,4-dihydro-3H-1,2,4-triazolo-3-tionu o wzorze ogólnym 1 oraz ich farmaceutycznie dopuszczalnych soli, który polega na tym, że hydrazyd kwasu 2,3-dichlorobenzoesowego o poddaje się reakcji z izotiocyjanianem pentylu, przy czym reakcję prowadzi się w stosunku molowym 1:1, w stopie lub w rozpuszczalnikach polarnych. W przypadku prowadzenia reakcji w stopie mieszaninę substratów ogrzewa się w temperaturze 100-140°C przez 1-10 minut, a w przypadku zaś reakcji w środowisku rozpuszczalnika polarnego zwłaszcza alkoholu etylowego proces prowadzi się w temperaturze wrzenia rozpuszczalnika przez okres 5-30 minut wstępnie po schłodzeniu powstały produkt odsącza się i krystalizuje z odpowiedniego rozpuszczalnika polarnego, korzystnie z etanolu i otrzymaną pochodną tiosemikarbazydu poddaje się reakcji cyklizacji w wodnym roztworze wodorotlenku, po czym roztwór zadaje się wodnym roztworem kwasu, korzystnie kwasem solnym do otrzymania odczynu kwasowego, zaś strącony związek o wzorze 1, krystalizuje się z odpowiedniego rozpuszczalnika polarnego, korzystnie z etanolu. Wynalazek obejmuje również pochodna 1,2,4-triazolu o wzorze ogólnym 1, oraz jej farmaceutycznie dopuszczalne sole do zastosowania jako lek.The present invention relates to a 1,2,4-triazole derivative of general formula 1, and pharmaceutically acceptable salts thereof. The subject of the invention is also a process for the preparation of 5- (2,3-dichlorophenyl) -4-pentyl-2,4-dihydro-3H-1,2,4-triazol-3-thione derivatives of general formula 1 and their pharmaceutically acceptable salts, which is that 2,3-dichlorobenzoic acid hydrazide is reacted with pentyl isothiocyanate, the reaction being carried out in a molar ratio of 1: 1, in an alloy or in polar solvents. If the reaction is carried out in the melt, the substrate mixture is heated at 100-140 ° C for 1-10 minutes, and in the case of a reaction in a polar solvent environment, especially ethyl alcohol, the process is carried out at the boiling point of the solvent for a period of 5-30 minutes pre-cooling the resulting product is filtered off and crystallized from a suitable polar solvent, preferably from ethanol, and the thiosemicarbazide derivative obtained is subjected to a cyclization reaction in an aqueous hydroxide solution, then the solution is mixed with an aqueous acid solution, preferably with hydrochloric acid to obtain an acid reaction, and the precipitated compound of formula 1 , crystallized from a suitable polar solvent, preferably from ethanol. The invention also includes the 1,2,4-triazole derivative of general formula 1, and pharmaceutically acceptable salts thereof for use as a medicine.

PL402467A 2013-01-17 2013-01-17 1,2,4-triazole derivative: 5-(2,3-dichlorophenyl)-4-pentyl-2,4-dihydro-3H-1,2,4-triazole-3-thione, a method for its preparation and its first medical application PL221233B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL402467A PL221233B1 (en) 2013-01-17 2013-01-17 1,2,4-triazole derivative: 5-(2,3-dichlorophenyl)-4-pentyl-2,4-dihydro-3H-1,2,4-triazole-3-thione, a method for its preparation and its first medical application

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PL402467A PL221233B1 (en) 2013-01-17 2013-01-17 1,2,4-triazole derivative: 5-(2,3-dichlorophenyl)-4-pentyl-2,4-dihydro-3H-1,2,4-triazole-3-thione, a method for its preparation and its first medical application

Publications (2)

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PL402467A1 true PL402467A1 (en) 2014-07-21
PL221233B1 PL221233B1 (en) 2016-03-31

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PL402467A PL221233B1 (en) 2013-01-17 2013-01-17 1,2,4-triazole derivative: 5-(2,3-dichlorophenyl)-4-pentyl-2,4-dihydro-3H-1,2,4-triazole-3-thione, a method for its preparation and its first medical application

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PL221233B1 (en) 2016-03-31

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