A therapeutic agent for chronic respiratory diseases and a composition for inhibiting cardiac fibrosis

摘要

COPD, interstitial pneumonia, and asthma. The present invention also provides a novel medicament useful for the prophylaxis or treatment of chronic respiratory diseases such as COPD, interstitial pneumonia and asthma. The therapeutic agent for chronic respiratory diseases is a therapeutic agent for chronic respiratory diseases which comprises a compound represented by the general formula (1) wherein R ¹ represents an alkyl group having 4 to 8 carbon atoms and R ² represents a hydrogen atom, an alkylcarbonyl group having 2 to 6 carbon atoms or an alkoxycarbonyl group having 2 to 6 carbon atoms, As an active ingredient.