Arzneimittelforschung 2001; 51(10): 839-842
DOI: 10.1055/s-0031-1300123
Antibiotics · Antiviral Drugs · Chemotherapeutics · Cytostatics
Editio Cantor Verlag Aulendorf (Germany)

Synthesis and Antimicrobial Evaluation of Some New Thiazolo[4,5-d] pyrimidines

Ayla Balkan
a   Hacettepe University, Faculty of Pharmacy, Department of Pharmaceutical Chemistry, Ankara, Turkey
,
Hüsne Urgun
a   Hacettepe University, Faculty of Pharmacy, Department of Pharmaceutical Chemistry, Ankara, Turkey
,
Meral Özalp
b   Department of Pharmaceutical Microbiology, Ankara, Turkey
› Author Affiliations
Further Information

Publication History

Publication Date:
26 December 2011 (online)

Summary

In this study, by starting from ethyl 4-amino-2,3-dihydro-3-methyl-2-thio-xothiazole-5-carboxylate (1), the compounds having 2,3-dihydro-3-methyl-5-mercapto-6-methyl/ethyl-2-thioxothiazolo[4,5-d]pyrimidin-7(6H)-one (2a, 2b) structure and their 5-(4’-nonsubstituted/-substitutedbenzoylmethyl)thio derivatives (3a-h) were synthesized. The chemical structures of the compounds were proved by IR, 1H-NMR and elemental analysis data. In vitro antimicrobial activities of the synthesized compounds were investigated against some bacteria and yeasts using the microdilution method. In view of the antimicrobial activity results, a significant inhibitory effect was observed only for compound 2a against Gram-positive bacteria and yeasts, whereas the other compounds had no remarkable activity against the tested microorganisms.

Zusammenfassung

Synthese und antimikrobielle Bewertung neuer Thiazolo[4,5-d]pyrimidine

In dieser Arbeit wurden zwei 2,3-Dihydro-3-methyl-5-mercapto-6-methyl/ ethyl-2-thioxothiazolo[4,5-d]pyrimidin-7 (6H)-one (2a, 2b) und ihre 5-(4’-Nonsubstituierte/-substituierte Benzoylmethyl) thio-Derivate (3a-h) hergestellt. Die Strukturaufklärung der Substanzen erfolgte durch IR- und 1H-NMR-Spektroskopie sowie durch Elementaranalyse. Die antimikrobielle Wirkung wurde in vitro gegen Gram-positive Bakterien und Candida-Hefen mit Hilfe von Reihenverdünnungstests untersucht. Substanz 2a zeigte gegen Grampositive Bakterien und Candida Hefen signifikant eine Aktivität, während die anderen Verbindungen keine nennenswerte Wirkung gegen die getesteten Mikroorganismen zeigten.