Arzneimittelforschung 1999; 49(12): 1006-1011
DOI: 10.1055/s-0031-1300542
Originalarbeit
Editio Cantor Verlag Aulendorf (Germany)

Synthesis and Evaluation of Anti-Inflammatory Activity of Some Thiazolo[3,2-b]-1,2,4-triazole-5(6H)-ones and Their Michael Addition Products

Birsen Tozkoparan
a   Hacettepe University, Faculty of Pharmacy, Department of Pharmaceutical Chemistry, Ankara University, Turkey
,
Gülgün Ayhan Kılcıgilb
b   Faculty of Pharmacy, Department of Pharmaceutical Chemistry, Hacettepe University, Turkey
,
Rahmiye Ertanb
b   Faculty of Pharmacy, Department of Pharmaceutical Chemistry, Hacettepe University, Turkey
,
Mevlüt Ertana
a   Hacettepe University, Faculty of Pharmacy, Department of Pharmaceutical Chemistry, Ankara University, Turkey
,
Pelin Kelicen
c   Faculty of Pharmacy, Department of Pharmacology, Ankara, Turkey
,
Rümeysa Demirdamar
c   Faculty of Pharmacy, Department of Pharmacology, Ankara, Turkey
› Author Affiliations
Further Information

Publication History

Publication Date:
28 December 2011 (online)

Summary

Thiazolo[3,2-b]-1,2,4-triazole-5(6H)-ones (4-10) were obtained in a one step synthesis by heat- ing 3-aryl-5-mercapto-1,2,4-triazoles (3a-d) with chloroacetic acid and appropriate aromatic aldehyde in acetic acid and acetic anhydride in the presence of anhydrous NaOAc. Michael type addition of cyclic secondary amines (N-methylpiperazine, piperidine) to 4-10 gave 2- phenyl-6-(α-aminoarylmethyl)thiazolo[3,2-b]-1,2,4-triazole-5-ols (4a-10b). The structures of the compounds were confirmed by spectral and elementary analysis. The compounds synthesized in previous and present studies were investigated for their anti-inflammatory activities.

Zusammenfassung

Synthese und Untersuchung der antiinflammatorischen Aktivität von Thiazolo[3,2-b]-1,2,4-triazol-5(6H)-onen und deren Michael-Additionsprodukte

Thiazolo[3,2-b]-1,2,4-triazole-5(6H)-one (4-10) wurden durch eine Einschritt-Synthese durch Erwärmen von 3-Aryl-5-mercapto-1,2,4-triazolen (3a-d), Chloressigsäure und entsprechenden aromatischen Aldehyden in Essigsäure sowie Essigsäure-anhydrid in Gegenwart von Natriumacetat hergestellt. Danach wurden 2-Phenyl-6-(α-aminoarylmethyl)thiazolo[3,2-b]-1,2,4-triazol-5-ole (4a-10b) nach Zugabe (Michael-Addition) von cyclischen sec. Aminen (N-methylpi- perazin, Piperidin) zu den Substanzen 410 hergestellt. Die Strukturen der Substanzen wurden durch Spektral- und Elementar-Analyse bestimmt. Die in früheren sowie in der vorliegenden Studie synthetisierten Substanzen wurden auf ihre antiinflammatorische Aktivität untersucht.