SOME 2-PYRAZINONE DERIVATIVES AND THEIR USE AS INHIBITORS OF NEUTROPHILE ELASTASE

摘要

The invention provides certain novel 6-heteroaryl-5-methyl-3- oxo-4- [3 (trif luoromethyl) phenyl] -3,4-dihydropyrazine-2- carboxamide derivatives 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 inhibitord of human neutrophil elastase.