Synthesis and evaluation of antitumor activity ofsome thiazolo[4,5-b]pyridines

Anti-inflammatory properties of some novel thiazolo[4,5-b]pyridin-2-ones

Synthesis of novel N3 and C5 substituted thiazolo[4,5-b]pyridin-2-ones was carried out on the basis of [3+3]-cyclocodensation, acylation and alkylation reactions. The structures of the obtained compounds were confirmed by 1H NMR spectroscopy, and elemental analysis. The anti-inflammatory action of novel thiazolo[4,5-b]pyridine-2-one derivatives was evaluated in vivo employing the carrageenan-induced rat paw edema method. When compared with Ibuprofen, some our compounds were found to be more potent.

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Antioxidant properties of some novel derivatives thiazolo[4,5-b] pyridine

The synthesis and determination of the antioxidant activity of some novel (5,7-dimethyl-2-oxo-thiazolo[4,5-b]pyridine-3-yl)-acetic acid hydrazide derivatives are described in this article. The transformation of the base heterocycle was carried out via the reactions of acylation, [2+3]cyclocondensation, Knoevenagel condencation and alkylation for the purpose to obtain substances with a satisfactory pharmacological profile. Antioxidant activity of the synthesized compounds was evaluatedin vitroby means of the scavenging metod effect on 2,2 diphenyl-1-picrylhydrazyl (DPPH) radicals.

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Synthesis of some new 4-iminothiazolidine-2-ones as possible antioxidants agents

Novel N3 substituted derivatives of 4-iminothiazolidine-2-one were synthesised under the reactions of [2+3]cyclocondensation, thionation and aminolysis. The functionalisation of 3-phenyl-4-imino-thiazolydine-2-one was carried out in its C5 position under condensation Knoevenagel and nitrosation reactions. The antioxidant activity of the synthesised compounds was evaluated in vitro by the method of their scavenging effect on 2,2-diphenyl-1-picrylhydrazyl (DPPH) radicals. When compared with existing antioxidants, some of our compounds were found to be more potent.