Synthesis and use of .alpha.-ketoamide derivatives and arrays

C - Chemistry – Metallurgy – 07 – C

Patent

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C07C 235/78 (2006.01) A61K 31/17 (2006.01) A61K 31/38 (2006.01) A61K 31/42 (2006.01) C07B 61/00 (2006.01) C07C 335/20 (2006.01) C07D 251/42 (2006.01) C07D 263/42 (2006.01) C07D 333/60 (2006.01) C07D 333/68 (2006.01)

Patent

CA 2286660

The invention is based on new methods for making and using compounds and arrays of novel .alpha.-ketoamides, and the arrays and compounds made by these methods. These novel compounds are potential inhibitors of proteolytic enzymes, particularly cysteine proteases such as cruzain. Application of the new methods has led to the identification of a number of new inhibitors, from amongst an array of about 38,000 .alpha.-ketoamide derivatives, having specific activity against three cysteine proteases: cruzain, papain, and cathepsing B. These compounds and other compounds identified by the methods described herein can be useful, for example, in developing pharmaceutic agents for the treatment of diseases (e.g., Chagas' disease) associated with these proteases. Although the disclosed compounds have specific activity for cruzain, papain, cathepsin B, the methods described herein can also be used to identify inhibitors of other proteases.

La présente invention concerne de nouveaux procédés de fabrication et d'utilisation de composés et d'ensembles de nouveaux .alpha.-cétoamides, et les ensembles et les composés fabriqués selon ces procédés. Ces nouveaux composés sont des inhibiteurs potentiels d'enzymes protéolytiques, en particulier de cystéine protéases telles que la cruzaïne. L'application de ces nouveaux procédés a conduit à l'identification d'un certain nombre de nouveaux inhibiteurs, parmi un ensemble d'environ 38000 dérivés de .alpha.-cétoamide à activité spécifique contre trois cystéine protéases: la cruzaïne, la papaïne et la cathepsine B. Ces composés et d'autres composés identifiés par les procédés ci-dessus peuvent être utilisés, par exemple, dans la mise au point d'agents pharmaceutiques pour le traitement de maladies (par exemple, la maladie de Chagas) associées à ces protéases. Du fait que les composés concernés ont une activité spécifique pour la cruzaïne, la papaïne et la cathepsine B, lesdits procédés peuvent également être utilisés pour identifier des inhibiteurs d'autre protéases.

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