Design, synthesis and biological evaluation of piperazinyl-β-carbolinederivatives as anti-leishmanial agents
2018
Abstract Molecular hybridization is a ligand based drug design approach is well known recent medicinal chemistry to design anti-parasitic agents. In the present study, we have designed a series of (1-phenyl-9 H -pyrido [3,4-b]indol-3-yl) (4-phenylpiperazin-1-yl)methanone derivatives using molecular hybridization approach. Designed analogues were evaluated for cytotoxicity and inhibition activity against Leishmania infantum and Leishmania donovani. Among these reported analogues 7b , 7d , 7e , 7f and 7m displayed potent inhibition of both L. infantum and L. donovani . Compounds 7i and 7k exhibited selective potent inhibition of L. donovani . Especially, compounds 7e and 7k showed most potent anti-leishmanial activity against L. infantum and L. donovani respectively. Anti-leishmanial activity of these compounds is comparable with standard drugs miltefosine and pentamidine. SAR studies revealed that, electron donating group substitution on phenyl ring recommended for potent anti-leishmanial activity.
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