N-HYDROXYUREA DERIVATIVE AND PHARMACEUTICAL COMPOSITION CONTAINING THE SAME

摘要

A novel N-hydroxyurea derivative represented by formula (I) and having antiallergic and anti-inflammatory effects, i.e., N-hydroxy-N-Ä6-(3-pyridylmethyl)-2H-1-benzopyran-3-ylmethylÜurea: <CHEM> and medicines containing the above urea derivative or a pharmacologically acceptable salt thereof, or a hydrate or solvate thereof as the active ingredient, particularly antiallergic or anti-inflammatory agent, especially antiasthmatic.