Unsaturated mannich bases active against multidrug-resistant Trypanosoma brucei brucei strains

Wenzel, N., Wong, P.E., Maes, L., Muller, T.J., Krauth-Siegel, R.L., Barrett, M.P. and Davioud-Charvet, E. (2009) Unsaturated mannich bases active against multidrug-resistant Trypanosoma brucei brucei strains. ChemMedChem, 4(3), pp. 339-351. (doi:10.1002/cmdc.200800360)

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Publisher's URL: http://dx.doi.org/10.1002/cmdc.200800360

Abstract

Unsaturated Mannich bases with potent antitrypanosomal action against multidrug-resistant strains of T. brucei brucei were identified. Their observed activities correlated well with their high Michael acceptor properties but not with their affinities to the P2 purine transporter. A series of unsaturated Mannich bases possessing two electrophilic sites was recently identified as irreversible inhibitors of trypanothione reductase from Trypanosoma cruzi. New derivatives were synthesized by modifying the substitution pattern on the aromatic ring and by incorporating the melamine motif of melarsoprol. Their affinity to P2 transporter and their trypanocidal properties have been studied using three strains expressing various purine transporters. While the melamine derivatives showed some affinity to the P2 transporter, unsaturated Mannich bases without the melamine motif showed excellent potencies against pentamidine-resistant strains of T. brucei brucei suggesting alternative drug uptake routes. The Michael acceptor properties of the three most active compounds towards glutathione correlated with the observed trypanocidal activities.

Item Type:Articles
Keywords:Mannich bases, melamine, purine transporters, trypanosomiasis, trypanothione, glutathione
Status:Published
Refereed:Yes
Glasgow Author(s) Enlighten ID:Barrett, Professor Michael and Wong, Dr Pui Ee
Authors: Wenzel, N., Wong, P.E., Maes, L., Muller, T.J., Krauth-Siegel, R.L., Barrett, M.P., and Davioud-Charvet, E.
Subjects:Q Science > QR Microbiology > QR180 Immunology
College/School:College of Medical Veterinary and Life Sciences
College of Medical Veterinary and Life Sciences > Institute of Infection Immunity and Inflammation
Journal Name:ChemMedChem
ISSN:1860-7179
ISSN (Online):1860-7187

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