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Original Article

pnr. 2013; 4(1): 39-45


Absence of antidiabetic activity in some novel thiazolidinone derivatives

Tejprakash Singh, Pramod Kumar Sharma, Nitin Kumar, Rupesh Dudhe.

Abstract
Aim: It was aimed to synthesise some novel thiazolidinone derivatives and assess them for antidiabetic activity. Material and Methods: A series of substituted 5-ethylidene-2-(phenylimino) thiazolidin-4-ones were prepared by using phenylthiourea (I) as a starting material. Phenylthiourea on reaction with ethylchloroacetate, in the presence of ethanol and fused sodium acetate, gave 2-(phenylimino) thiazolidin-4-one (II), and 2-(phenylimino) thiazolidin-4-one on further reaction with substituted benzaldehyde gave substituted 5-ethylidene-2- (phenylimino) thiazolidin-4-one (III - XVIII). The synthesized compounds were authenticated on the basis of elemental analysis, IR, 1H NMR, and Mass spectral analysis and some of the compounds were selected on the basis of a literature review, to evaluate them for their antidiabetic activity. Results and Conclusion: All The tested compounds 5-(4-fluorobenzylidene)-2-(phenylimino) thiazolidin-4-on (VII) and 5-(4-Methylbenzylidene)-2-(phenylimino)thiazolidin-4-one (X), 5-(2, 4-dinitrobenzylidene)-2-(phenylamino) thiazolidin-4-one (XVII) were found to be ineffective in lowering the blood glucose level.

Key words: Heterocyclic, substitution, synthesis, thiazole, thiazolidinone



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