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Synthesis and biological activity of 4-thiazolidinone derivatives of phenothiazine

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Author(s): Sharma Ritu | Samadhiya Pushkal | Srivastava Savitri D. | Srivastava Santosh K.

Journal: Journal of the Serbian Chemical Society
ISSN 0352-5139

Volume: 77;
Issue: 1;
Start page: 17;
Date: 2012;
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Keywords: synthesis | phenothiazine | 4-oxo-thiazolidine | antimicrobial | antitubercular

ABSTRACT
A new series of N-[3-(10H-phenothiazinyl)-propyl]-2-(substituted phenyl)-4-oxo-5-( substituted benzylidene)-1,3-thiazolidine-carboxamide, 5(as) have been synthesized. The cycloaddition reaction of thioglycolic acid with N-[3-(10H-phenothiazinyl)-propyl]-N’-[(substituted phenyl)-methylidene]- urea, 3(a-s) in the presence of anhydrous ZnCl2 afforded new heterocyclic compounds N-[3-(10H-phenothiazinyl)-propyl]-2-(substituted phenyl)-4-oxo- 1,3-thiazolidine-carboxamide, 4(a-s). The later product on treatment with several selected substituted aromatic aldehydes in the presence of C2H5ONa undergoes Knoevenagel reaction to yield 5(a-s). The structure of compounds 1, 2, 3(a-s), 4(a-s) and 5(a-s) were confirmed by IR, 1H NMR, 13C NMR, Fmass and chemical analysis. All above compounds were screened for their antimicrobial activity against some selected bacteria and fungi and for antituberculosis activity compounds have been screened against the bacterium M. tuberculosis.

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