[EN] BENZOXAZINONE DERIVATIVES ACTING AS BETA2-ADRENORECEPTOR AGONIST FOR THE TREATMENT OF RESPIRATORY DISORDERS [FR] DÉRIVÉS DE BENZOXAZINONE AGISSANT COMME AGONISTE DES RÉCEPTEURS BÊTA2-ADRÉNERGIQUES POUR LE TRAITEMENT DE TROUBLES RESPIRATOIRES
The present invention provides a compound of formula (I)
wherein W, R
1
, R
2
and R
3
are as defined in the specification, processes for their preparation, pharmaceutical compositions containing them and their use in therapy.