Hit-to-Lead Optimization of a Novel Class of Potent, Broad-Spectrum Trypanosomacides.

Abstract:

:The parasitic trypanosomes Trypanosoma brucei and T. cruzi are responsible for significant human suffering in the form of human African trypanosomiasis (HAT) and Chagas disease. Drugs currently available to treat these neglected diseases leave much to be desired. Herein we report optimization of a novel class of N-(2-(2-phenylthiazol-4-yl)ethyl)amides, carbamates, and ureas, which rapidly, selectively, and potently kill both species of trypanosome. The mode of action of these compounds is unknown but does not involve CYP51 inhibition. They do, however, exhibit clear structure-activity relationships, consistent across both trypanosome species. Favorable physicochemical parameters place the best compounds in CNS drug-like chemical space but, as a class, they exhibit poor metabolic stability. One of the best compounds (64a) cleared all signs of T. cruzi infection in mice when CYP metabolism was inhibited, with sterile cure achieved in one mouse. This family of compounds thus shows significant promise for trypanosomiasis drug discovery.

journal_name

J Med Chem

authors

Russell S,Rahmani R,Jones AJ,Newson HL,Neilde K,Cotillo I,Rahmani Khajouei M,Ferrins L,Qureishi S,Nguyen N,Martinez-Martinez MS,Weaver DF,Kaiser M,Riley J,Thomas J,De Rycker M,Read KD,Flematti GR,Ryan E,Tanghe S,R

doi

10.1021/acs.jmedchem.6b00442

subject

Has Abstract

pub_date

2016-11-10 00:00:00

pages

9686-9720

issue

21

eissn

0022-2623

issn

1520-4804

journal_volume

59

pub_type

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