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African trypanosomiasis: Synthesis & SAR enabling novel drug discovery of ubiquinol mimics for trypanosome alternative oxidase

West, Ryan A., O'Doherty, Oran G., Askwith, Trevor, Atack, John, Beswick, Paul, Laverick, Jamie, Paradowski, Michael, Pennicott, Lewis E., Rao, Srinivasa P.S., Williams, Gareth and Ward, Simon 2017. African trypanosomiasis: Synthesis & SAR enabling novel drug discovery of ubiquinol mimics for trypanosome alternative oxidase. European Journal of Medicinal Chemistry 141 , pp. 676-689. 10.1016/j.ejmech.2017.09.067

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Abstract

African trypanosomiasis is a parasitic disease affecting 5000 humans and millions of livestock animals in sub-Saharan Africa every year. Current treatments are limited, difficult to administer and often toxic causing long term injury or death in many patients. Trypanosome alternative oxidase is a parasite specific enzyme whose inhibition by the natural product ascofuranone (AF) has been shown to be curative in murine models. Until now synthetic methods to AF analogues have been limited, this has restricted both understanding of the key structural features required for binding and also how this chemotype could be developed to an effective therapeutic agent. The development of 3 amenable novel synthetic routes to ascofuranone-like compounds is described. The SAR generated around the AF chemotype is reported with correlation to the inhibition of T. b. brucei growth and corresponding selectivity in cytotoxic assessment in mammalian HepG2 cell lines. These methods allow access to greater synthetic diversification and have enabled the synthesis of compounds that have and will continue to facilitate further optimisation of the AF chemotype into a drug-like lead.

Item Type: Article
Date Type: Publication
Status: Published
Schools: Biosciences
Medicine
Publisher: Elsevier
ISSN: 0223-5234
Date of First Compliant Deposit: 6 November 2017
Date of Acceptance: 29 September 2017
Last Modified: 29 Jun 2018 20:08
URI: http://orca.cf.ac.uk/id/eprint/106247

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