A series of 4-quinolylhydrazones was synthesized and tested in vitro against Mycobacterium tuberculosis. At a concentration of 6.25 mu g/mL, most of the newly synthesized compounds displayed 100% inhibitory activity against M. tuberculosis in cellular assays. Further screening allowed the identification of very potent antitubercular agents. Compound 4c was also tested in a time-course experiment and against mtb clinical isolates, displaying interesting results. (C) 2009 Elsevier Ltd. All rights reserved.
Microwave-assisted synthesis of 4-quinolylhydrazines followed by nickel boride reduction: a convenient approach to 4-aminoquinolines and derivatives
Nickel(II) chloride/sodium borohydride combination was employed for the reduction of 4-hydrazinoquinoline derivatives to the corresponding anilines. This reductive protocol was efficiently applied for the reductive cleavage of monosubstituted hydrazines. We described herein the microwave-assisted synthesis of 4-hydrazinoquinolines, which furnished a high yielding and rapid two-step procedure for the