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3-(Oxazolo[4,5-b]pyridin-2-yl)anilides as a novel class of potent inhibitors for the kinetoplastid Trypanosoma brucei, the causative agent for human African trypanosomiasis

Journal Article


Abstract


  • A whole organism high-throughput screen of approximately 87,000 compounds against Trypanosoma brucei brucei led to the recent discovery of several novel compound classes with low micromolar activity against this organism and without appreciable cytotoxicity to mammalian cells. Herein we report a structure–activity relationship (SAR) investigation around one of these hit classes, the 3-(oxazolo[4,5-b]pyridin-2-yl)anilides. Sharp SAR is revealed, with our most active compound (5) exhibiting an IC50 of 91 nM against the human pathogenic strain T.b. rhodesiense and being more than 700 times less toxic towards the L6 mammalian cell line. Physicochemical properties are attractive for many compounds in this series. For the most potent representatives, we show that solubility and metabolic stability are key parameters to target during future optimisation.

UOW Authors


  •   Ferrins, Lori (external author)
  •   Rahmani, Raphael (external author)
  •   Sykes, Melissa L. (external author)
  •   Jones, Amy J. (external author)
  •   Avery, Vicky M. (external author)
  •   Teston, Eliott (external author)
  •   Almohaywi, Basmah (external author)
  •   Yin, Jiexiang (external author)
  •   Smith, Jason A. (external author)
  •   Hyland, Christopher
  •   White, Karen L. (external author)
  •   Ryan, Eileen (external author)
  •   Campbell, Michael (external author)
  •   Charman, Susan A. (external author)
  •   Kaiser, Marcel (external author)
  •   Baell, Jonathan (external author)

Publication Date


  • 2013

Citation


  • Ferrins, L., Rahmani, R., Sykes, M. L., Jones, A. J., Avery, V. M., Teston, E., Almohaywi, B., Yin, J., Smith, J. A., Hyland, C., White, K. L., Ryan, E., Campbell, M., Charman, S. A., Kaiser, M. & Baell, J. (2013). 3-(Oxazolo[4,5-b]pyridin-2-yl)anilides as a novel class of potent inhibitors for the kinetoplastid Trypanosoma brucei, the causative agent for human African trypanosomiasis. European Journal of Medicinal Chemistry, 66 450-465.

Scopus Eid


  • 2-s2.0-84879802453

Ro Metadata Url


  • http://ro.uow.edu.au/smhpapers/2044

Number Of Pages


  • 15

Start Page


  • 450

End Page


  • 465

Volume


  • 66

Abstract


  • A whole organism high-throughput screen of approximately 87,000 compounds against Trypanosoma brucei brucei led to the recent discovery of several novel compound classes with low micromolar activity against this organism and without appreciable cytotoxicity to mammalian cells. Herein we report a structure–activity relationship (SAR) investigation around one of these hit classes, the 3-(oxazolo[4,5-b]pyridin-2-yl)anilides. Sharp SAR is revealed, with our most active compound (5) exhibiting an IC50 of 91 nM against the human pathogenic strain T.b. rhodesiense and being more than 700 times less toxic towards the L6 mammalian cell line. Physicochemical properties are attractive for many compounds in this series. For the most potent representatives, we show that solubility and metabolic stability are key parameters to target during future optimisation.

UOW Authors


  •   Ferrins, Lori (external author)
  •   Rahmani, Raphael (external author)
  •   Sykes, Melissa L. (external author)
  •   Jones, Amy J. (external author)
  •   Avery, Vicky M. (external author)
  •   Teston, Eliott (external author)
  •   Almohaywi, Basmah (external author)
  •   Yin, Jiexiang (external author)
  •   Smith, Jason A. (external author)
  •   Hyland, Christopher
  •   White, Karen L. (external author)
  •   Ryan, Eileen (external author)
  •   Campbell, Michael (external author)
  •   Charman, Susan A. (external author)
  •   Kaiser, Marcel (external author)
  •   Baell, Jonathan (external author)

Publication Date


  • 2013

Citation


  • Ferrins, L., Rahmani, R., Sykes, M. L., Jones, A. J., Avery, V. M., Teston, E., Almohaywi, B., Yin, J., Smith, J. A., Hyland, C., White, K. L., Ryan, E., Campbell, M., Charman, S. A., Kaiser, M. & Baell, J. (2013). 3-(Oxazolo[4,5-b]pyridin-2-yl)anilides as a novel class of potent inhibitors for the kinetoplastid Trypanosoma brucei, the causative agent for human African trypanosomiasis. European Journal of Medicinal Chemistry, 66 450-465.

Scopus Eid


  • 2-s2.0-84879802453

Ro Metadata Url


  • http://ro.uow.edu.au/smhpapers/2044

Number Of Pages


  • 15

Start Page


  • 450

End Page


  • 465

Volume


  • 66