| abstract |
(57) [Problem] To provide a novel N-hydroxyurea derivative having an antiallergic action or an antiinflammatory action. Kind Code: A1 Abstract: Formula (I) (Wherein, R 1 represents a hydrogen atom or a methyl group, and R 2 represents 1 Represents an -imidazolylmethyl group or a 3-pyridylmethyl group, except that a broken line may or may not have a bond, unless both of the broken lines represent a bond. Or a pharmaceutically acceptable salt thereof, or a hydrate or solvate thereof. |