Synthesis and antiproliferative activity of N-substituted 2-amino-5-(2,4-dihydroxyphenyl)-1,3,4-thiadiazoles

Bioorganic & Medicinal Chemistry
Joanna Matysiak, Adam Opolski

Abstract

A number of N-substituted 2-amino-5-(2,4-dihydroxyphenyl)-1,3,4-thiadiazoles were synthesized and evaluated for their antiproliferative activities. The panel substitution included alkyl, aryl, and morpholinoalkyl derivatives. The structures of compounds were identified from elemental, IR, (1)H NMR, (13)C NMR and MS spectra analyses. The cytotoxicity in vitro against the four human cell lines: SW707 (rectal), HCV29T (bladder), A549 (lung), and T47D (breast) was determined. Alkyl and morpholinoalkyl derivatives exhibited significantly lower effect than phenyl ones. The highest antiproliferative activity was found for 2-(2,4-dichlorophenylamino)-5-(2,4-dihydroxyphenyl)-1,3,4-thiadiazole, with ID(50) two times lower (SW707, T47D) than for cisplatin studied comparatively as the control compound.

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