abstract |
Disclosed is a pyrazolonaphthyridine compound represented by the formula: <CHEM> wherein R<1> is represents hydrogen, lower alkyl, aralkyl, or substituted or unsubstituted aryl, R<2> represents hydrogen, lower alkyl, thienyl, substituted or unsubsutituted aryl, hydroxy or amino, or a pharmaceutically acceptable salt thereof. The compound possesses antiinflammatory effect, immunosuppressive effect, broncho-dilatory effect and hair growth-stimulative effect. |