title: Synthesis and antituberculosis activity of 5-methyl/trifluoromethoxy-1H-indole-2,3-dione 3-thiosemicarbazone derivatives.
abstract: New series of 5-methyl/trifluoromethoxy-1H-indole-2,3-dione 3-thiosemicarbazones 3a-t, 1-methyl-5-methyl/trifluoromethoxy-1H-indole-2,3-dione 3-thiosemicarbazones 4a-y and 5-trifluoromethoxy-1-morpholinomethyl-1H-indole-2,3-dione 3-thiosemicarbazones 5a-m were synthesized. The structures of the synthesized compounds were confirmed by spectral data and elemental analysis. The new 5-methyl/trifluoromethoxy-1H-indole-2,3-dione derivatives, along with previously synthesized 5-methyl-1H-indole-2,3-dione 3-thiosemicarbazones 6a-l, were evaluated for in vitro antituberculosis activity against Mycobacterium tuberculosis H37Rv. 5-Methyl-1H-indole-2,3-dione 3-thiosemicarbazones (3b, 3d, 3f, 6c, 6d, and 6f), 5-trifluoromethoxy-1H-indole-2,3-dione 3-thiosemicarbazones (3q-s) and 5-trifluoromethoxy-1-morpholinomethyl-1H-indole-2,3-dione 3-thiosemicarbazones (5e and 5j-l) were found to be the most potent inhibitors of M. tuberculosis growth described in this study.
authors.affiliation: Istanbul University, Faculty of Pharmacy, Department of Pharmaceutical Chemistry, 34116 Beyazit, Istanbul, Turkey.
authors.forename: Ozlen
authors.initials: O
authors.lastname: Güzel
authors.forename: Nilgün
authors.initials: N
authors.lastname: Karali
authors.forename: Aydin
authors.initials: A
authors.lastname: Salman
mesh_terms: D000995:Antitubercular Agents / Q000138:chemical synthesis / Q000494:pharmacology*; D007211:Indoles / Q000138:chemical synthesis / Q000494:pharmacology*; D008826:Microbial Sensitivity Tests; D009169:Mycobacterium tuberculosis / Q000187:drug effects* / Q000254:growth & development; D013329:Structure-Activity Relationship; D013882:Thiosemicarbazones / Q000138:chemical synthesis / Q000494:pharmacology*
chemical_list: D000995:Antitubercular Agents; D007211:Indoles; D013882:Thiosemicarbazones