The invention relates to nitrooxyderivative of corticosteroids of generalformula (I) and pharmaceutically acceptable salts or stereoisomers thereof wherein R is the corticosteroid residue of formula (II): wherein: R1 is OH, R2-CH3, or R1 and R2 are taken together to form a group of formula (III) R3 is C1 or F； R4 is H or F； wherein R1, R2, R3 and R4 can be linked to the correspondent carbon atoms of the steroidal structure in position .beta. or .beta.； with the proviso that: when R1 and R2 are the group of formula (III) then R3 is F and R4 is H or F； The compounds are useful in the treatment of respiratory diseases, inflammatory diseases, dermatological diseases and oculardiseases.
