Abstract
A new series of (E)-6-methyl-N-((3-phenyl-1-(4-phenylthiazol-2-yl)-1H-pyrazol-4-yl)methylene)benzo[d]thiazol-2-amine derivatives was developed. Structural investigation of the synthesized derivatives was carried out by several instrumental method of analysis like IR, and 1H-NMR spectroscopy. The titled analogues were examined for in-vitro anticancer and antiinfective activities. The biological findings specified that analogues 5a, 5b, 5d, 5e, 5f and 5g showed most potent antibacterial activity (MIC 62.5-250μg/mL) and 5a, 5e, 5f and 5g displayed most potent antifungal action (MIC 62.5-500 μg/mL) than standard drugs. Compounds 5a and 5e were reported to be most active antimalarial analogue having IC50 value of 0.24-0.49μg/mL. Compounds 5a, 5e and 5f showed shortest mean paralysis time of (25.6±4.56 min, 26.4±4.97 min and 26.8±4.76 min) and mean death time (47.6±8.01min, 45.6±3.04min and 46.6±7.40min), respectively. Compound 5e showed moderate cytotoxicity with IC50 value of 65.4 against MCF-7. The results proved that 1,3-thiazolyl-pyrazole clubbed benzothiazole derivatives showed considerable antiinfective and cytotoxic activity. Keywords: Anti-infective activity, Cytotoxic activity, Spectroscopic methods, Thiazole, Pyrazole, Benzothiazole.
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