The synthesis of 6-thiosubstituted 5-ethoxycarbonyl-1,3-diphenyl-2-thioxo-2,3-dihydropyrimidin- 4(1H)-ones 3, and of 6-substituted 5-hydroxy-1,3-diphenyl-2,3-dihydrothieno[2,3-d]pyrimidin-4(1H)-ones 5 and their esters 6 is described. These derivatives were prepared in order to evaluate the influence on the pharmacological profile of alkyl substituents bearing polar/hydrophilic functionalities at an enethiol substructure as in compounds 3 or to assess the effects arising from the incorporation of the sulfur atom in a thiophene moiety as in thienopyrimidinones 5 and 6 in comparison with a series of 5-substituted 6-acylthio-1,3-diphenyl-2-thioxo-2,3-dihydropyrimidin-4(1H)-ones 1c,d, previously described. Preliminary screenings suggest that all tested compounds maintained or even increased the local anesthetic activity, but failed in the platelet antiaggregating activity; on the other hand, antiarrhythmic and antiinflammatory activity was preserved in some esters 6.
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Titolo: | Synthesis of 6-thiosubstituted 5-ethoxycarbonyl-1,3-diphenyl-2-thioxo-2,3-dihydropyrimidin-4(1H)-ones, 6-substituted 5-hydroxy-1,3-diphenyl-2,3-dihydrothieno[2,3-d]pyrimidin-4(1H)-ones and their esters with local anesthetic, antiarrhythmic, antiinflammatory and analgesic activities. |
Autori: | |
Data di pubblicazione: | 1997 |
Rivista: | |
Abstract: | The synthesis of 6-thiosubstituted 5-ethoxycarbonyl-1,3-diphenyl-2-thioxo-2,3-dihydropyrimidin- 4(1H)-ones 3, and of 6-substituted 5-hydroxy-1,3-diphenyl-2,3-dihydrothieno[2,3-d]pyrimidin-4(1H)-ones 5 and their esters 6 is described. These derivatives were prepared in order to evaluate the influence on the pharmacological profile of alkyl substituents bearing polar/hydrophilic functionalities at an enethiol substructure as in compounds 3 or to assess the effects arising from the incorporation of the sulfur atom in a thiophene moiety as in thienopyrimidinones 5 and 6 in comparison with a series of 5-substituted 6-acylthio-1,3-diphenyl-2-thioxo-2,3-dihydropyrimidin-4(1H)-ones 1c,d, previously described. Preliminary screenings suggest that all tested compounds maintained or even increased the local anesthetic activity, but failed in the platelet antiaggregating activity; on the other hand, antiarrhythmic and antiinflammatory activity was preserved in some esters 6. |
Handle: | http://hdl.handle.net/11567/377836 |
Appare nelle tipologie: | 01.01 - Articolo su rivista |