Volume 80, Issue 5
  • ISSN: 0002-9637
  • E-ISSN: 1476-1645


Chalcone derivatives were evaluated for their antifilarial activity on using glutathione--transferase (GST) as a drug target. The compounds 1-(4-benzotriazol-1-yl-phenyl)-3-(4-methoxyphenyl)prop-2-en-1-one (5), and 3-(4-methoxyphenyl)-1-(4-pyrrolidin-1-yl-phenyl) prop-2-en-1-one (7) showed a significant suppression ( < 0.01) in GST activity of adult female parasite extract at 3 μM concentration . However, GST activity was detected along with depletion in GSH level. Except Compounds 1 and 2, all exhibited a significant effect on the motility and viability of adult parasites. Compounds 3-(4-chlorophenyl)-1-(4-piperidin-1-yl-phenyl)prop-2-en-1-one (3), 1-(4-benzotriazol-1-yl-phenyl)-3-(4-methoxyphenyl)prop-2-en-1-one (5), and 3-(4-methoxyphenyl)-1-(4-pyrrolidin-1-yl-phenyl) prop-2-en-1-one (7) exhibited major irreversible effects on viability and resulted in parasite death and also inhibited the GST activity by 84–100% . We report for the first time the antifilarial activity of chalcones on GST of adult parasites. This study also strengthens our previous findings where GST is reported as a potential drug target for antifilarials.


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  • Received : 29 Jul 2008
  • Accepted : 18 Jan 2009

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