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Discovery of New Antitubercular Oxazolyl Thiosemicarbazones

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journal contribution
posted on 15.06.2006, 00:00 by Dharmarajan Sriram, Perumal Yogeeswari, Rathinasababathy Thirumurugan, Roheet Kumar Pavana
Twenty 4-(5-cyclobutyloxazol-2-yl)thiosemicarbazones were synthesized and evaluated for preliminary in vitro and in vivo activity against Mycobacterium tuberculosis H37Rv (MTB) and multidrug-resistant Mycobacterium tuberculosis (MDR-TB). Among them, (4-bromophenyl)(phenyl)methanone N-(5-cyclobutyl-1,3-oxazol-2-yl)thiosemicarbazone 6q was found to be the most active compound in vitro with minimum inhibitory concentration of 0.05 μg/mL against MTB and MDR-TB. In the in vivo animal model 6q decreased the bacterial load in lung and spleen tissues with 2.1 log 10 and 3.72 log 10 protections, respectively, at 50 mg/kg body weight dose.

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