Disclosed are novel compounds of formula (I): ##STR1## wherein Ar.sub.1, R.sub.a, R.sub.4, R.sub.5, X and Y are defined below, which are useful as inhibitors of certain protein tyrosine kinases and are thus useful for treating diseases associated with such kinases, for example, diseases resulting from inappropriate cell proliferation, which include autoimmune diseases, chronic inflammatory diseases, allergic diseases, transplant rejection and cancer, as well as conditions resulting from cerebral ischemia, such as stroke. Also disclosed are processes for preparing these compounds, novel intermediates useful in these processes and compositions comprising compounds of the formula (I).

Sono rilevati i residui del romanzo della formula (i): ## del ## STR1 in cui Ar.sub.1, R.sub.a, R.sub.4, R.sub.5, la X e Y sono definiti sotto, che sono utili come inibitori di determinate chinasi della tirosina della proteina e sono così utili per trattare le malattie connesse con tali chinasi, per esempio, malattie derivando dalla proliferazione inadeguata delle cellule, che includono le malattie autoimmuni, le malattie infiammatorie croniche, malattie allergiche, rifiuto del transplant e cancro, così come le circostanze derivando dal ischemia cerebrale, quale il colpo. Inoltre sono rilevati i procedimenti per la preparazione questi residui, gli intermediari del romanzo utili in questi processi e delle composizioni che contengono i residui la formula (i).

 
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