Some 2-pyrazinone derivatives and their use as inhibitors of neutrophile elastase

摘要

The invention provides certain novel compounds as listed in the specification and pharmaceutically acceptable salts thereof and particular Forms thereof; together with processes for their preparation, pharmaceutical compositions containing them and their use in therapy. The compounds are inhibitors of human neutrophil elastase. The present neutrophil elastase inhibitors include 6-[1-(4-Cyanophenyl)-1H-pyrazol-5-yl]-5-methyl-3-oxo-4-[3-(trifluoromethyl)phenyl]-3,4-dihydropyrazine-2-carboxamide:;