Therapeutic agent for chronic obstructive pulmonary disease

摘要

A prevention and/or treatment agent for chronic obstructive pulmonary disease comprising a hydroxamic acid compound of formula (I) wherein R¹ is (i) hydrogen, (ii) C1-8 alkyl or (iii) C1-8 alkyl substituted by -OR², in which R² is (i) hydrogen, (ii) C1-8 alkyl, (iii) benzyl, or (iv) C1-8 alkyl substituted by C1-8 alkoxy; a salt thereof, a solvate thereof or a prodrug thereof as active ingredient.